flyrotary@lancaironline.net Mailing List Archive

Tom I am interested .,How do i contact you??? Roy rglenn14@sbcglobal.net -------------------------------------------- On Sun, 6/18/17, Mail Delivery Subsystem <MAILER-DAEMON@logan.com> wrote: Subject: Undeliverable mail: Re: flyrotary Digest #4450 To: rglenn14@sbcglobal.net Date: Sunday, June 18, 2017, 7:47 AM Failed to deliver to 'flyrotary@lancaironline.net' LIST module(list flyrotary@lancaironline.net) reports: You should not reply on digest messages without changing the Subject field in contact with Tom Gillespie about the engine he has for sale -------------------------------------------- On Sat, 6/17/17, Rotary motors in aircraft <flyrotary@lancaironline.net> wrote: Subject: flyrotary Digest #4450 To: "Rotary motors in aircraft" <flyrotary@lancaironline.net> Date: Saturday, June 17, 2017, 5:01 AM From: "Ed Anderson" <flyrotary@lancaironline.net> Message-ID: <AE129F3D2FFB4599A5F34F68FDAF545B@EdPC> Subject: Re: [FlyRotary] Re: Fuel filter Date: Fri, 16 Jun 2017 08:55:25 -0400 Content-Type: text/plain; format=flowed; charset="utf-8"; reply-type=response Content-Transfer-Encoding: 8bit Hi Finn, Since you appear to be uncomfortable with barb fittings, here are the ones I used for over 10 years that have a screwed on fitting, never had any problems. Replaced them ever 2 years, cut them open and could never detect any trash in fuel system. I started with an AC GF-481 which became hard to find and then switched to a more readily accessable NAPA filter the GF652 NAPA FIL-3481. They do require the Saginaw fitting and an "O" ring. Fuel Filters: OEM Auto Fuel Injector Fuel Filters (Two in Parallel) Type: AC GF - 481 Pkg: 25056052 OEM:25055129 (or equivalent) Replaced by GF652, NAPA FIL -3481 Fittings: 3/8 Saginaw to AN6 Adapter, “O” ring required Best Regards Ed -----Original Message----- From: Charlie England Sent: Thursday, June 15, 2017 11:29 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Fuel filter On 6/15/2017 7:45 PM, Finn Lassen wrote: > Still haven't found a EFI filter with hose barbs I'm comfortable with. > > Some specs says paper filter, some puts the limit at 45 psi. > > Can anybody recommend a filter to insert between output of HFI pumps and > fuel rails? > > Finn > > > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html Have you searched for an inline fuel injection filter with NPT threads? You can use NPT to hose barb adapters. Summit has one that looks like the NAPA all metal filter several builders have used. It doesn't list filter media or max psi on the site, but it might be worth a look. Charlie --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html Rotary motors in aircraft Digest #4450 1) Re: Fuel filter by Ed Anderson 2) Re: Fuel filter by Finn Lassen 3) Re: Fuel filter by flyrotary 4) Re: ceramic coating by Ernest Christley 5) Re: ceramic coating by William Jepson 6) Re: Jet-Hot Ceramic Coating by Doug Lomheim 7) Re: Jet-Hot Ceramic Coating by A R Goldman 8) Re: ceramic coating by Todd Bartrim 9) Re: Jet-Hot Ceramic Coating by Todd Bartrim This digest is sent to you because you are subscribed to the mailing list <flyrotary@lancaironline.net>. To unsubscribe, E-mail to: <flyrotary-off@lancaironline.net> To switch to the FEED mode, E-mail to <flyrotary-feed@lancaironline.net> Send administrative queries to <flyrotary-request@lancaironline.net> From: "Finn Lassen" <flyrotary@lancaironline.net> Subject: Re: [FlyRotary] Re: Fuel filter Message-ID: <678fac63-b136-95f1-b3fd-7640f095d843@verizon.net> Date: Fri, 16 Jun 2017 10:26:17 -0400 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Hi Ed, I'm not uncomfortable with hose barbs as such. All fuel lines forward of firewall are Aeoquip "hose barbs". Considering inside area of 3/8" hose (0.11 sq in) and 80 psi (more than twice my normal operating pressure) and how hard it is to press on the hose onto the fittings, a 9 pound pressure trying to press off the hose seems minor. I'm more concerned with the quality of the filter (can) itself. With all the high pressure car EFIs out there it should be possible to find a filter with hose barbs -- but maybe not the quality of the Aeroquip ones. Finn On 6/16/2017 8:55 AM, Ed Anderson wrote: > Hi Finn, > > Since you appear to be uncomfortable with barb fittings, here are the > ones I used for over 10 years that have a screwed on fitting, never > had any problems. Replaced them ever 2 years, cut them open and could > never detect any trash in fuel system. I started with an AC GF-481 > which became hard to find and then switched to a more readily > accessable NAPA filter the GF652 NAPA FIL-3481. They do require the > Saginaw fitting and an "O" ring. > > > > Fuel Filters: OEM Auto Fuel Injector Fuel Filters (Two in > Parallel) > Type: AC GF - 481 Pkg: 25056052 OEM:25055129 (or equivalent) > Replaced by GF652, NAPA FIL -3481 > Fittings: 3/8 Saginaw to AN6 Adapter, “O” ring required > > Best Regards > > Ed > > > > -----Original Message----- From: Charlie England > Sent: Thursday, June 15, 2017 11:29 PM > To: Rotary motors in aircraft > Subject: [FlyRotary] Re: Fuel filter > > On 6/15/2017 7:45 PM, Finn Lassen wrote: >> Still haven't found a EFI filter with hose barbs I'm comfortable with. >> >> Some specs says paper filter, some puts the limit at 45 psi. >> >> Can anybody recommend a filter to insert between output of HFI pumps >> and fuel rails? >> >> Finn >> >> >> >> -- >> Homepage: http://www.flyrotary.com/ >> Archive and UnSub: >> http://mail.lancaironline.net:81/lists/flyrotary/List.html > Have you searched for an inline fuel injection filter with NPT threads? > You can use NPT to hose barb adapters. Summit has one that looks like > the NAPA all metal filter several builders have used. It doesn't list > filter media or max psi on the site, but it might be worth a look. > > Charlie > > --- > This email has been checked for viruses by Avast antivirus software. > https://www.avast.com/antivirus > > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html > > From: "flyrotary" <flyrotary@lancaironline.net> Message-ID: <1945d9.7d7e88f.46754b29@aol.com> Date: Fri, 16 Jun 2017 10:54:33 -0400 Subject: Re: [FlyRotary] Re: Fuel filter Content-Type: multipart/alternative; boundary="part1_1945d9.7d7e88f.46754b29_boundary" --part1_1945d9.7d7e88f.46754b29_boundary Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Content-Language: en The micron rating of the last chance filter would be the same as in the ca= r=20 the injector came from or was used in. Find a filter with that micron=20 rating (the one from the car) and cut it open. Lay out the paper or wire= media=20 and measure the square inches. Double that number and buy a filter(s) tha= t=20 have that numberof square inches of media and AN fitting capability. =20 There is no application for hose barb fittings on an airplane or a race= =20 car. Change the filters at annual. Sintered bronze elements can be plugged solid by a dose of water. I would= =20 not use them. This is race car stuff. My BD-4 hangs from the ceiling =20 unfinished.=20 Lynn E. Hanover =20 In a message dated 6/16/2017 8:55:46 A.M. Eastern Daylight Time, =20 flyrotary@lancaironline.net writes: =20 Hi Finn, Since you appear to be uncomfortable with barb fittings, here are the one= s=20 I=20 used for over 10 years that have a screwed on fitting, never had any=20 problems. Replaced them ever 2 years, cut them open and could never=20 detect=20 any trash in fuel system. I started with an AC GF-481 which became hard= =20 to=20 find and then switched to a more readily accessible NAPA filter the GF652= =20 NAPA FIL-3481. They do require the Saginaw fitting and an "O" ring. Fuel Filters: OEM Auto Fuel Injector Fuel Filters (Two in Parallel) Type: AC GF - 481 Pkg: 25056052 OEM:25055129 (or equivalent) Replaced by GF652, NAPA FIL -3481 Fittings: 3/8 Saginaw to AN6 Adapter, =E2=80=9CO=E2=80=9D ring re= quired Best Regards Ed -----Original Message-----=20 From: Charlie England Sent: Thursday, June 15, 2017 11:29 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Fuel filter On 6/15/2017 7:45 PM, Finn Lassen wrote: > Still haven't found a EFI filter with hose barbs I'm comfortable with. > > Some specs says paper filter, some puts the limit at 45 psi. > > Can anybody recommend a filter to insert between output of HFI pumps an= d=20 > fuel rails? > > Finn > > > > --=20 > Homepage: http://www.flyrotary.com/ > Archive and UnSub:=20 > http://mail.lancaironline.net:81/lists/flyrotary/List.html Have you searched for an inline fuel injection filter with NPT threads? You can use NPT to hose barb adapters. Summit has one that looks like the NAPA all metal filter several builders have used. It doesn't list filter media or max psi on the site, but it might be worth a look. Charlie --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus -- Homepage: http://www.flyrotary.com/ Archive and UnSub: =20 http://mail.lancaironline.net:81/lists/flyrotary/List.html =20 -- Homepage: http://www.flyrotary.com/ Archive and UnSub: =20 http://mail.lancaironline.net:81/lists/flyrotary/List.html --part1_1945d9.7d7e88f.46754b29_boundary Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Content-Language: en <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META content=3D"text/html; charset=3DUTF-8" http-equiv=3DContent-Type> <META name=3DGENERATOR content=3D"MSHTML 11.00.9600.18698"></HEAD> <BODY id=3Drole_body style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial; COLOR:= #000000"=20 bottomMargin=3D7 leftMargin=3D7 rightMargin=3D7 topMargin=3D7><FONT id=3Dr= ole_document=20 color=3D#000000 size=3D2 face=3DArial> <DIV>The micron rating of the last chance filter would be the same as in= the car=20 the injector came from or was used in. Find a filter with that micron rati= ng=20 (the one from the car) and cut it open. Lay out the paper or wire media an= d=20 measure the square inches. Double that number and buy a filter(s) that hav= e that=20 numberof square inches of media and AN fitting capability.</DIV> <DIV> </DIV> <DIV> There is no application for hose barb fittings on an airplane= or a=20 race car. Change the filters at annual.</DIV> <DIV>Sintered bronze elements can be plugged solid by a dose of water. I= would=20 not use them.  This is race car stuff. My BD-4 hangs from the ceiling= =20 unfinished. </DIV> <DIV>Lynn E. Hanover</DIV> <DIV> </DIV> <DIV>In a message dated 6/16/2017 8:55:46 A.M. Eastern Daylight Time,=20 flyrotary@lancaironline.net writes:</DIV> <DIV> <BLOCKQUOTE=20 style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px solid"= ><FONT=20 style=3D"BACKGROUND-COLOR: transparent" color=3D#000000 size=3D2 face=3D= Arial>Hi=20 Finn,<BR><BR>Since you appear to be uncomfortable with barb fittings, he= re are=20 the ones I <BR>used for over 10 years that have a screwed on fitting, ne= ver=20 had any <BR>problems.  Replaced them ever 2 years, cut them open an= d=20 could never detect <BR>any trash in fuel system.  I started with an= AC=20 GF-481 which became hard to <BR>find and then switched to a more readily= =20 accessible NAPA filter the GF652 <BR>NAPA FIL-3481.  They do requir= e the=20 Saginaw fitting and an "O" ring.<BR><BR><BR><BR>Fuel Filters:  &nbs= p;=20       OEM Auto Fuel Injector Fuel Filters (Two in=20 Parallel)<BR>Type:             AC GF= - 481=20 Pkg: 25056052 OEM:25055129 (or equivalent)<BR>      &nbsp= ;=20               Replaced by GF652, NAPA= FIL=20 -3481<BR>Fittings:         3/8 Saginaw to AN6= =20 Adapter, =E2=80=9CO=E2=80=9D ring required<BR><BR>Best=20 Regards<BR><BR>Ed<BR><BR><BR><BR>-----Original Message----- <BR>From: Ch= arlie=20 England<BR>Sent: Thursday, June 15, 2017 11:29 PM<BR>To: Rotary motors= in=20 aircraft<BR>Subject: [FlyRotary] Re: Fuel filter<BR><BR>On 6/15/2017 7:4= 5 PM,=20 Finn Lassen wrote:<BR>> Still haven't found a EFI filter with hose ba= rbs=20 I'm comfortable with.<BR>><BR>> Some specs says paper filter, some= puts=20 the limit at 45 psi.<BR>><BR>> Can anybody recommend a filter to= insert=20 between output of HFI pumps and <BR>> fuel rails?<BR>><BR>>=20 Finn<BR>><BR>><BR>><BR>> -- <BR>> Homepage: =20 http://www.flyrotary.com/<BR>> Archive and UnSub: <BR>>=20 http://mail.lancaironline.net:81/lists/flyrotary/List.html<BR>Have you= =20 searched for an inline fuel injection filter with NPT threads?<BR>You ca= n use=20 NPT to hose barb adapters. Summit has one that looks like<BR>the NAPA al= l=20 metal filter several builders have used. It doesn't list<BR>filter media= or=20 max psi on the site, but it might be worth a=20 look.<BR><BR>Charlie<BR><BR>---<BR>This email has been checked for virus= es by=20 Avast antivirus=20 software.<BR>https://www.avast.com/antivirus<BR><BR><BR>--<BR>Homepage:&= nbsp;=20 http://www.flyrotary.com/<BR>Archive and UnSub:=20 <BR>http://mail.lancaironline.net:81/lists/flyrotary/List.html=20 <BR><BR><BR>--<BR>Homepage:  http://www.flyrotary.com/<BR>Archive= and=20 UnSub:  =20 http://mail.lancaironline.net:81/lists/flyrotary/List.html<BR></FONT></B= LOCKQUOTE></DIV></FONT></BODY></HTML> --part1_1945d9.7d7e88f.46754b29_boundary-- From: "Ernest Christley" <flyrotary@lancaironline.net> Date: Fri, 16 Jun 2017 20:08:05 +0000 (UTC) Message-ID: <1781907468.14491728.1497643685330@mail.yahoo.com> Subject: Re: [FlyRotary] Re: ceramic coating Content-Type: multipart/alternative; boundary="----=_Part_14491727_1518800249.1497643685327" ------=_Part_14491727_1518800249.1497643685327 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable I have it on the outside of the exhaust pipes on my Corvair.=C2=A0 Scratche= s off easily. =20 On Thursday, June 15, 2017 5:45 PM, Todd Bartrim <flyrotary@lancaironli= ne.net> wrote: =20 It appears that Jet-Hot is a service business and not a product that I can= buy. They may have their own proprietary coatings but it doesn't appear th= at they sell them as a product but only as a service for which I'd have to = send my stuff out-of -country to have them apply it.I can get it done here = in Canada by any number of businesses that use a variety of products includ= ing Cerakote and Ceramakrome. Unfortunately none of them are local and othe= r than VHT, I haven't been able to find a product in Canada to do it myself= .=C2=A0 So unless somebody speaks up with a glowing recommendation for VHT,= then I'll resign myself to shipping them away to have someone do it for me= . Todd Bartrim On Thu, Jun 15, 2017 at 12:26 PM, William Jepson <flyrotary@lancaironline.n= et> wrote: Todd, I haven't used the VHT coating, but I have used the Jet-Hot coatings.= They have performed great. They have a high-temp coating that will work fo= r rotaries. The wraps tend to cause corrosion since they seem to trap conde= nsation.Bill Jepson On Thu, Jun 15, 2017 at 12:21 PM, Todd Bartrim <flyrotary@lancaironline.net= > wrote: Has anybody tried using VHT Flameproof, ceramic coating ? It's rated up to = 2000F intermittent.I've been running my engine with exhaust wraps and am ve= ry pleased with the reduction of under cowl temps but am aware of the conce= rns regarding longevity of the exhaust.As I'm very near to returning to the= airport I want to address this and go with a ceramic coating.I have the ab= ility and facilities to apply a proper ceramic coat, but it is difficult to= source the material at a reasonable cost and timeframe.=C2=A0 I can ship i= t away and have it done for about the same price and less time. But I can a= lso purchase VHT locally. While it comes in an aerosol can, it is not paint= . It can be applied as simple as you would a paint, but for best results, p= roper cleaning, bead blasting and oven cure are required, not unlike the us= ual ceramic coats.=C2=A0 I always preferr to do things myself, but if anybo= dy can say that this stuff is not up to the hype, then I'll consider shippi= ng out the exhaust to have it done.=C2=A0 I have about a week of work to do= where I want the exhaust in place, but then I'll be away for a week, durin= g which time I can send it out.=C2=A0 =C2=A0Further to this, has anybody ev= er had their exhaust ceramic coated and then also wrapped it to provide eve= n more heat reduction? Todd Bartrim=C2=A0C-FSTBTurbo 13B RV9a =20 ------=_Part_14491727_1518800249.1497643685327 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable <html><head></head><body><div style=3D"color:#000; background-color:#fff; f= ont-family:Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font= -size:13px">I have it on the outside of the exhaust pipes on my Corvair.&nb= sp; Scratches off easily.<br><div id=3D"yui_3_16_0_1_1497398144177_104408">= <span></span></div> <div class=3D"qtdSeparateBR"><br><br></div><div style= =3D"display: block;" class=3D"yahoo_quoted"> <div style=3D"font-family: Hel= vetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 13px;"= > <div style=3D"font-family: HelveticaNeue, Helvetica Neue, Helvetica, Aria= l, Lucida Grande, sans-serif; font-size: 16px;"> <div dir=3D"ltr"><font fac= e=3D"Arial" size=3D"2"> On Thursday, June 15, 2017 5:45 PM, Todd Bartrim &l= t;flyrotary@lancaironline.net> wrote:<br></font></div> <br><br> <div cl= ass=3D"y_msg_container"><div id=3D"yiv9956977200"><div dir=3D"ltr">It appea= rs that Jet-Hot is a service business and not a product that I can buy. The= y may have their own proprietary coatings but it doesn't appear that they s= ell them as a product but only as a service for which I'd have to send my s= tuff out-of -country to have them apply it.<div>I can get it done here in C= anada by any number of businesses that use a variety of products including = Cerakote and Ceramakrome. Unfortunately none of them are local and other th= an VHT, I haven't been able to find a product in Canada to do it myself.</d= iv><div>  So unless somebody speaks up with a glowing recommendation f= or VHT, then I'll resign myself to shipping them away to have someone do it= for me.</div></div><div class=3D"yiv9956977200gmail_extra"><br clear=3D"al= l"><div><div class=3D"yiv9956977200gmail_signature"><div dir=3D"ltr">Todd B= artrim</div></div></div> <br><div class=3D"yiv9956977200gmail_quote">On Thu, Jun 15, 2017 at 12:26 P= M, William Jepson <span dir=3D"ltr"><<a rel=3D"nofollow" ymailto=3D"mail= to:flyrotary@lancaironline.net" target=3D"_blank" href=3D"mailto:flyrotary@= lancaironline.net">flyrotary@lancaironline.net</a>></span> wrote:<br><bl= ockquote class=3D"yiv9956977200gmail_quote" style=3D"margin:0 0 0 .8ex;bord= er-left:1px #ccc solid;padding-left:1ex;"><div dir=3D"ltr">Todd, I haven't = used the VHT coating, but I have used the Jet-Hot coatings. They have perfo= rmed great. They have a high-temp coating that will work for rotaries. The = wraps tend to cause corrosion since they seem to trap condensation.<div>Bil= l Jepson</div></div><div class=3D"yiv9956977200HOEnZb"><div class=3D"yiv995= 6977200h5"><div class=3D"yiv9956977200gmail_extra"><br><div class=3D"yiv995= 6977200gmail_quote">On Thu, Jun 15, 2017 at 12:21 PM, Todd Bartrim <span di= r=3D"ltr"><<a rel=3D"nofollow" ymailto=3D"mailto:flyrotary@lancaironline= .net" target=3D"_blank" href=3D"mailto:flyrotary@lancaironline.net">flyrota= ry@lancaironline.net</a>></span> wrote:<br><blockquote class=3D"yiv99569= 77200gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;pad= ding-left:1ex;"><div dir=3D"ltr"><div>Has anybody tried using VHT Flameproo= f, ceramic coating ? It's rated up to 2000F intermittent.</div><div>I've be= en running my engine with exhaust wraps and am very pleased with the reduct= ion of under cowl temps but am aware of the concerns regarding longevity of= the exhaust.</div><div>As I'm very near to returning to the airport I want= to address this and go with a ceramic coating.</div><div>I have the abilit= y and facilities to apply a proper ceramic coat, but it is difficult to sou= rce the material at a reasonable cost and timeframe.</div><div>  I can= ship it away and have it done for about the same price and less time. But = I can also purchase VHT locally. While it comes in an aerosol can, it is no= t paint. It can be applied as simple as you would a paint, but for best res= ults, proper cleaning, bead blasting and oven cure are required, not unlike= the usual ceramic coats.</div><div>  I always preferr to do things my= self, but if anybody can say that this stuff is not up to the hype, then I'= ll consider shipping out the exhaust to have it done.</div><div>  I ha= ve about a week of work to do where I want the exhaust in place, but then I= 'll be away for a week, during which time I can send it out.</div><div>&nbs= p;  Further to this, has anybody ever had their exhaust ceramic coated= and then also wrapped it to provide even more heat reduction?</div><span c= lass=3D"yiv9956977200m_-6755719113355655419HOEnZb"><font color=3D"#888888">= <br clear=3D"all"><div><div class=3D"yiv9956977200m_-6755719113355655419m_-= 8006799879278187847gmail_signature"><div dir=3D"ltr">Todd Bartrim</div><div= > C-FSTB</div><div>Turbo 13B RV9a</div></div></div> </font></span></div> </blockquote></div><br></div> </div></div></blockquote></div><br></div></div><br><br></div> </div> </div= > </div></div></body></html> ------=_Part_14491727_1518800249.1497643685327-- From: "William Jepson" <flyrotary@lancaironline.net> Date: Fri, 16 Jun 2017 15:37:54 -0700 Message-ID: <CAN=mtacPZneukJT+A5rC3Zc6B2dEmJVamuNMNijUAvBhuO2UnA@mail.gmail.com> Subject: Re: [FlyRotary] Re: ceramic coating Content-Type: multipart/alternative; boundary="f403043efbf4b7d07e05521b6f3f" --f403043efbf4b7d07e05521b6f3f Content-Type: text/plain; charset="UTF-8" Todd, When I was racing motorcycles the tight fairings were always a problem. Until Ti came into more common use I, cheap bastard that I am, always railed against the cost sending a brand new pipe to jet-hot. But I did it several times and the result was always a pipe that didn't corrode. I never had one crack or fail in 10 years of race bikes. Bill Jepson On Fri, Jun 16, 2017 at 1:08 PM, Ernest Christley < flyrotary@lancaironline.net> wrote: > I have it on the outside of the exhaust pipes on my Corvair. Scratches > off easily. > > > On Thursday, June 15, 2017 5:45 PM, Todd Bartrim < > flyrotary@lancaironline.net> wrote: > > > It appears that Jet-Hot is a service business and not a product that I can > buy. They may have their own proprietary coatings but it doesn't appear > that they sell them as a product but only as a service for which I'd have > to send my stuff out-of -country to have them apply it. > I can get it done here in Canada by any number of businesses that use a > variety of products including Cerakote and Ceramakrome. Unfortunately none > of them are local and other than VHT, I haven't been able to find a product > in Canada to do it myself. > So unless somebody speaks up with a glowing recommendation for VHT, then > I'll resign myself to shipping them away to have someone do it for me. > > Todd Bartrim > > On Thu, Jun 15, 2017 at 12:26 PM, William Jepson < > flyrotary@lancaironline.net> wrote: > > Todd, I haven't used the VHT coating, but I have used the Jet-Hot > coatings. They have performed great. They have a high-temp coating that > will work for rotaries. The wraps tend to cause corrosion since they seem > to trap condensation. > Bill Jepson > > On Thu, Jun 15, 2017 at 12:21 PM, Todd Bartrim < > flyrotary@lancaironline.net> wrote: > > Has anybody tried using VHT Flameproof, ceramic coating ? It's rated up to > 2000F intermittent. > I've been running my engine with exhaust wraps and am very pleased with > the reduction of under cowl temps but am aware of the concerns regarding > longevity of the exhaust. > As I'm very near to returning to the airport I want to address this and go > with a ceramic coating. > I have the ability and facilities to apply a proper ceramic coat, but it > is difficult to source the material at a reasonable cost and timeframe. > I can ship it away and have it done for about the same price and less > time. But I can also purchase VHT locally. While it comes in an aerosol > can, it is not paint. It can be applied as simple as you would a paint, but > for best results, proper cleaning, bead blasting and oven cure are > required, not unlike the usual ceramic coats. > I always preferr to do things myself, but if anybody can say that this > stuff is not up to the hype, then I'll consider shipping out the exhaust to > have it done. > I have about a week of work to do where I want the exhaust in place, but > then I'll be away for a week, during which time I can send it out. > Further to this, has anybody ever had their exhaust ceramic coated and > then also wrapped it to provide even more heat reduction? > > Todd Bartrim > C-FSTB > Turbo 13B RV9a > > > > > > --f403043efbf4b7d07e05521b6f3f Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable <div dir=3D"ltr">Todd,<div>When I was racing motorcycles the tight fairings= were always a problem. Until Ti came into more common use I, cheap bastard= that I am, always railed against the cost sending a brand new pipe to jet-= hot. But I did it several times and the result was always a pipe that didn&= #39;t corrode. I never had one crack or fail in 10 years of race bikes.</di= v><div>Bill Jepson</div></div><div class=3D"gmail_extra"><br><div class=3D"= gmail_quote">On Fri, Jun 16, 2017 at 1:08 PM, Ernest Christley <span dir=3D= "ltr"><<a href=3D"mailto:flyrotary@lancaironline.net" target=3D"_blank">= flyrotary@lancaironline.net</a>></span> wrote:<br><blockquote class=3D"g= mail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-l= eft:1ex"><div><div style=3D"color:#000;background-color:#fff;font-family:He= lvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:13px">I hav= e it on the outside of the exhaust pipes on my Corvair.=C2=A0 Scratches off= easily.<br><div id=3D"m_8744711099577254959yui_3_16_0_1_1497398144177_1044= 08"><span></span></div> <div class=3D"m_8744711099577254959qtdSeparateBR"><= br><br></div><div style=3D"display:block" class=3D"m_8744711099577254959yah= oo_quoted"> <div style=3D"font-family:Helvetica Neue,Helvetica,Arial,Lucida= Grande,sans-serif;font-size:13px"> <div style=3D"font-family:HelveticaNeue= ,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"> <= div dir=3D"ltr"><font face=3D"Arial" size=3D"2"> On Thursday, June 15, 2017= 5:45 PM, Todd Bartrim <<a href=3D"mailto:flyrotary@lancaironline.net" t= arget=3D"_blank">flyrotary@lancaironline.net</a>> wrote:<br></font></div= > <br><br> <div class=3D"m_8744711099577254959y_msg_container"><div id=3D"= m_8744711099577254959yiv9956977200"><div dir=3D"ltr">It appears that Jet-Ho= t is a service business and not a product that I can buy. They may have the= ir own proprietary coatings but it doesn't appear that they sell them a= s a product but only as a service for which I'd have to send my stuff o= ut-of -country to have them apply it.<div>I can get it done here in Canada = by any number of businesses that use a variety of products including Cerako= te and Ceramakrome. Unfortunately none of them are local and other than VHT= , I haven't been able to find a product in Canada to do it myself.</div= ><div>=C2=A0 So unless somebody speaks up with a glowing recommendation for= VHT, then I'll resign myself to shipping them away to have someone do = it for me.</div></div><div class=3D"m_8744711099577254959yiv9956977200gmail= _extra"><br clear=3D"all"><div><div class=3D"m_8744711099577254959yiv995697= 7200gmail_signature"><div dir=3D"ltr">Todd Bartrim</div></div></div> <br><div class=3D"m_8744711099577254959yiv9956977200gmail_quote">On Thu, Ju= n 15, 2017 at 12:26 PM, William Jepson <span dir=3D"ltr"><<a rel=3D"nofo= llow" href=3D"mailto:flyrotary@lancaironline.net" target=3D"_blank">flyrota= ry@lancaironline.net</a>></span> wrote:<br><blockquote class=3D"m_874471= 1099577254959yiv9956977200gmail_quote" style=3D"margin:0 0 0 .8ex;border-le= ft:1px #ccc solid;padding-left:1ex"><div dir=3D"ltr">Todd, I haven't us= ed the VHT coating, but I have used the Jet-Hot coatings. They have perform= ed great. They have a high-temp coating that will work for rotaries. The wr= aps tend to cause corrosion since they seem to trap condensation.<div>Bill = Jepson</div></div><div class=3D"m_8744711099577254959yiv9956977200HOEnZb"><= div class=3D"m_8744711099577254959yiv9956977200h5"><div class=3D"m_87447110= 99577254959yiv9956977200gmail_extra"><br><div class=3D"m_874471109957725495= 9yiv9956977200gmail_quote">On Thu, Jun 15, 2017 at 12:21 PM, Todd Bartrim <= span dir=3D"ltr"><<a rel=3D"nofollow" href=3D"mailto:flyrotary@lancairon= line.net" target=3D"_blank">flyrotary@lancaironline.net</a>></span> wrot= e:<br><blockquote class=3D"m_8744711099577254959yiv9956977200gmail_quote" s= tyle=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div= dir=3D"ltr"><div>Has anybody tried using VHT Flameproof, ceramic coating ?= It's rated up to 2000F intermittent.</div><div>I've been running m= y engine with exhaust wraps and am very pleased with the reduction of under= cowl temps but am aware of the concerns regarding longevity of the exhaust= .</div><div>As I'm very near to returning to the airport I want to addr= ess this and go with a ceramic coating.</div><div>I have the ability and fa= cilities to apply a proper ceramic coat, but it is difficult to source the = material at a reasonable cost and timeframe.</div><div>=C2=A0 I can ship it= away and have it done for about the same price and less time. But I can al= so purchase VHT locally. While it comes in an aerosol can, it is not paint.= It can be applied as simple as you would a paint, but for best results, pr= oper cleaning, bead blasting and oven cure are required, not unlike the usu= al ceramic coats.</div><div>=C2=A0 I always preferr to do things myself, bu= t if anybody can say that this stuff is not up to the hype, then I'll c= onsider shipping out the exhaust to have it done.</div><div>=C2=A0 I have a= bout a week of work to do where I want the exhaust in place, but then I&#39= ;ll be away for a week, during which time I can send it out.</div><div>=C2= =A0 =C2=A0Further to this, has anybody ever had their exhaust ceramic coate= d and then also wrapped it to provide even more heat reduction?</div><span = class=3D"m_8744711099577254959yiv9956977200m_-6755719113355655419HOEnZb"><f= ont color=3D"#888888"><br clear=3D"all"><div><div class=3D"m_87447110995772= 54959yiv9956977200m_-6755719113355655419m_-8006799879278187847gmail_signatu= re"><div dir=3D"ltr">Todd Bartrim</div><div>=C2=A0C-FSTB</div><div>Turbo 13= B RV9a</div></div></div> </font></span></div> </blockquote></div><br></div> </div></div></blockquote></div><br></div></div><br><br></div> </div> </div= > </div></div></div></blockquote></div><br></div> --f403043efbf4b7d07e05521b6f3f-- From: "Doug Lomheim" <flyrotary@lancaironline.net> Content-Type: multipart/alternative; boundary="Apple-Mail=_D17BFFD3-2FCF-4716-B1B4-E2C111B15E8C" Subject: Re: Jet-Hot Ceramic Coating Message-Id: <A5D25750-99DA-4243-A332-B3951C7FB659@aol.com> Date: Sat, 17 Jun 2017 06:58:52 +0200 --Apple-Mail=_D17BFFD3-2FCF-4716-B1B4-E2C111B15E8C Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 So in summary it appears there is some benefit to applying =E2=80=9CJet = Hot=E2=80=9D to both the inside and outside of new headers from an under = cowling heat reduction point of view. =20 Back in the early to mid 2000=E2=80=99s, I seem to remember that some on = our list had experimented by having the rotors themselves shot with some = product; but that product wasn=E2=80=99t very durable, etc.? For some = reason my new MAC doesn=E2=80=99t want to perform an =E2=80=9Carchive = search=E2=80=9D for me=E2=80=A6 Doug =20= --Apple-Mail=_D17BFFD3-2FCF-4716-B1B4-E2C111B15E8C Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8 <html><head><meta http-equiv=3D"Content-Type" content=3D"text/html = charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; = -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" = class=3D""><font size=3D"4" class=3D"">So in summary it appears there is = some benefit to applying =E2=80=9CJet Hot=E2=80=9D to both the = inside and outside of new headers from an under cowling heat reduction = point of view.    </font><div class=3D""><font size=3D"4" = class=3D""><br class=3D""></font></div><div class=3D""><font size=3D"4" = class=3D"">Back in the early to mid 2000=E2=80=99s, I seem to = remember that some on our list had experimented by having the = rotors themselves shot with some product; but that product wasn=E2=80=99t = very durable, etc.?  For some reason my new MAC doesn=E2=80=99t = want to perform an =E2=80=9Carchive search=E2=80=9D for = me=E2=80=A6</font></div><div class=3D""><font size=3D"4" class=3D""><br = class=3D""></font></div><div class=3D""><font size=3D"4" class=3D"">Doug =    </font></div></body></html>= --Apple-Mail=_D17BFFD3-2FCF-4716-B1B4-E2C111B15E8C-- From: "A R Goldman" <flyrotary@lancaironline.net> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Date: Sat, 17 Jun 2017 00:10:31 -0500 Subject: Re: [FlyRotary] Re: Jet-Hot Ceramic Coating Message-Id: <7DFE6BC5-3CD1-40F7-85D5-2D35F5795AD8@aol.com> So this begs the question (at least to me) if we have a muffler in line whic= h you really can't coat in and out, will coating the header cause an increas= e in thermal wear of the muffler since the exhaust gas will be hotter? Rich Sent from my iPhone > On Jun 16, 2017, at 11:58 PM, Doug Lomheim <flyrotary@lancaironline.net> w= rote: >=20 > Doug =20 From: "Todd Bartrim" <flyrotary@lancaironline.net> Date: Sat, 17 Jun 2017 08:15:33 +0000 Message-ID: <CALYfWBsfdsh4aCwmUCUuaF_T5v4=Vfb7P8ns=QQ7=4mvrvGMBg@mail.gmail.com> Subject: Re: [FlyRotary] Re: ceramic coating Content-Type: multipart/alternative; boundary="001a1144c1961cf7870552238258" --001a1144c1961cf7870552238258 Content-Type: text/plain; charset="UTF-8" I had found something about that VHT dramatically reducing underhood temps, but after searching to find where I saw that, I realized it was a teenager in a YouTube video. So much for that. Next week after I do some more engine runs. I'll remove the exhaust and ship it out, as I'll be away on a climbing trip with my son. On Fri, Jun 16, 2017, 13:08 Ernest Christley, <flyrotary@lancaironline.net> wrote: > I have it on the outside of the exhaust pipes on my Corvair. Scratches > off easily. > > > > On Thursday, June 15, 2017 5:45 PM, Todd Bartrim < > flyrotary@lancaironline.net> wrote: > > > It appears that Jet-Hot is a service business and not a product that I can > buy. They may have their own proprietary coatings but it doesn't appear > that they sell them as a product but only as a service for which I'd have > to send my stuff out-of -country to have them apply it. > I can get it done here in Canada by any number of businesses that use a > variety of products including Cerakote and Ceramakrome. Unfortunately none > of them are local and other than VHT, I haven't been able to find a product > in Canada to do it myself. > So unless somebody speaks up with a glowing recommendation for VHT, then > I'll resign myself to shipping them away to have someone do it for me. > > Todd Bartrim > > On Thu, Jun 15, 2017 at 12:26 PM, William Jepson < > flyrotary@lancaironline.net> wrote: > > Todd, I haven't used the VHT coating, but I have used the Jet-Hot > coatings. They have performed great. They have a high-temp coating that > will work for rotaries. The wraps tend to cause corrosion since they seem > to trap condensation. > Bill Jepson > > On Thu, Jun 15, 2017 at 12:21 PM, Todd Bartrim < > flyrotary@lancaironline.net> wrote: > > Has anybody tried using VHT Flameproof, ceramic coating ? It's rated up to > 2000F intermittent. > I've been running my engine with exhaust wraps and am very pleased with > the reduction of under cowl temps but am aware of the concerns regarding > longevity of the exhaust. > As I'm very near to returning to the airport I want to address this and go > with a ceramic coating. > I have the ability and facilities to apply a proper ceramic coat, but it > is difficult to source the material at a reasonable cost and timeframe. > I can ship it away and have it done for about the same price and less > time. But I can also purchase VHT locally. While it comes in an aerosol > can, it is not paint. It can be applied as simple as you would a paint, but > for best results, proper cleaning, bead blasting and oven cure are > required, not unlike the usual ceramic coats. > I always preferr to do things myself, but if anybody can say that this > stuff is not up to the hype, then I'll consider shipping out the exhaust to > have it done. > I have about a week of work to do where I want the exhaust in place, but > then I'll be away for a week, during which time I can send it out. > Further to this, has anybody ever had their exhaust ceramic coated and > then also wrapped it to provide even more heat reduction? > > Todd Bartrim > C-FSTB > Turbo 13B RV9a > > > > > > --001a1144c1961cf7870552238258 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable <p dir=3D"ltr">I had found something about that VHT dramatically reducing u= nderhood temps, but after searching to find where I saw that, I realized it= was a teenager in a YouTube video. So much for that.<br> =C2=A0 Next week after I do some more engine runs. I'll remove the exha= ust and ship it out, as I'll be away on a climbing trip with my son.</p= > <br><div class=3D"gmail_quote"><div dir=3D"ltr">On Fri, Jun 16, 2017, 13:08= Ernest Christley, <<a href=3D"mailto:flyrotary@lancaironline.net">flyro= tary@lancaironline.net</a>> wrote:<br></div><blockquote class=3D"gmail_q= uote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1e= x"><div><div style=3D"color:#000;background-color:#fff;font-family:Helvetic= a Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:13px">I have it o= n the outside of the exhaust pipes on my Corvair.=C2=A0 Scratches off easil= y.</div></div><div><div style=3D"color:#000;background-color:#fff;font-fami= ly:Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:13px">= <br><div id=3D"m_-831768650625459263yui_3_16_0_1_1497398144177_104408"><spa= n></span></div> <div class=3D"m_-831768650625459263qtdSeparateBR"><br><br><= /div><div style=3D"display:block" class=3D"m_-831768650625459263yahoo_quote= d"> <div style=3D"font-family:Helvetica Neue,Helvetica,Arial,Lucida Grande,= sans-serif;font-size:13px"> <div style=3D"font-family:HelveticaNeue,Helveti= ca Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"> <div dir= =3D"ltr"><font face=3D"Arial" size=3D"2"> On Thursday, June 15, 2017 5:45 P= M, Todd Bartrim <<a href=3D"mailto:flyrotary@lancaironline.net" target= =3D"_blank">flyrotary@lancaironline.net</a>> wrote:<br></font></div> <b= r><br> <div class=3D"m_-831768650625459263y_msg_container"><div id=3D"m_-83= 1768650625459263yiv9956977200"><div dir=3D"ltr">It appears that Jet-Hot is = a service business and not a product that I can buy. They may have their ow= n proprietary coatings but it doesn't appear that they sell them as a p= roduct but only as a service for which I'd have to send my stuff out-of= -country to have them apply it.<div>I can get it done here in Canada by an= y number of businesses that use a variety of products including Cerakote an= d Ceramakrome. Unfortunately none of them are local and other than VHT, I h= aven't been able to find a product in Canada to do it myself.</div><div= >=C2=A0 So unless somebody speaks up with a glowing recommendation for VHT,= then I'll resign myself to shipping them away to have someone do it fo= r me.</div></div><div class=3D"m_-831768650625459263yiv9956977200gmail_extr= a"><br clear=3D"all"><div><div class=3D"m_-831768650625459263yiv9956977200g= mail_signature"><div dir=3D"ltr">Todd Bartrim</div></div></div> <br><div class=3D"m_-831768650625459263yiv9956977200gmail_quote">On Thu, Ju= n 15, 2017 at 12:26 PM, William Jepson <span dir=3D"ltr"><<a rel=3D"nofo= llow" href=3D"mailto:flyrotary@lancaironline.net" target=3D"_blank">flyrota= ry@lancaironline.net</a>></span> wrote:<br><blockquote class=3D"m_-83176= 8650625459263yiv9956977200gmail_quote" style=3D"margin:0 0 0 .8ex;border-le= ft:1px #ccc solid;padding-left:1ex"><div dir=3D"ltr">Todd, I haven't us= ed the VHT coating, but I have used the Jet-Hot coatings. They have perform= ed great. They have a high-temp coating that will work for rotaries. The wr= aps tend to cause corrosion since they seem to trap condensation.<div>Bill = Jepson</div></div><div class=3D"m_-831768650625459263yiv9956977200HOEnZb"><= div class=3D"m_-831768650625459263yiv9956977200h5"><div class=3D"m_-8317686= 50625459263yiv9956977200gmail_extra"><br><div class=3D"m_-83176865062545926= 3yiv9956977200gmail_quote">On Thu, Jun 15, 2017 at 12:21 PM, Todd Bartrim <= span dir=3D"ltr"><<a rel=3D"nofollow" href=3D"mailto:flyrotary@lancairon= line.net" target=3D"_blank">flyrotary@lancaironline.net</a>></span> wrot= e:<br><blockquote class=3D"m_-831768650625459263yiv9956977200gmail_quote" s= tyle=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div= dir=3D"ltr"><div>Has anybody tried using VHT Flameproof, ceramic coating ?= It's rated up to 2000F intermittent.</div><div>I've been running m= y engine with exhaust wraps and am very pleased with the reduction of under= cowl temps but am aware of the concerns regarding longevity of the exhaust= .</div><div>As I'm very near to returning to the airport I want to addr= ess this and go with a ceramic coating.</div><div>I have the ability and fa= cilities to apply a proper ceramic coat, but it is difficult to source the = material at a reasonable cost and timeframe.</div><div>=C2=A0 I can ship it= away and have it done for about the same price and less time. But I can al= so purchase VHT locally. While it comes in an aerosol can, it is not paint.= It can be applied as simple as you would a paint, but for best results, pr= oper cleaning, bead blasting and oven cure are required, not unlike the usu= al ceramic coats.</div><div>=C2=A0 I always preferr to do things myself, bu= t if anybody can say that this stuff is not up to the hype, then I'll c= onsider shipping out the exhaust to have it done.</div><div>=C2=A0 I have a= bout a week of work to do where I want the exhaust in place, but then I&#39= ;ll be away for a week, during which time I can send it out.</div><div>=C2= =A0 =C2=A0Further to this, has anybody ever had their exhaust ceramic coate= d and then also wrapped it to provide even more heat reduction?</div><span = class=3D"m_-831768650625459263yiv9956977200m_-6755719113355655419HOEnZb"><f= ont color=3D"#888888"><br clear=3D"all"><div><div class=3D"m_-8317686506254= 59263yiv9956977200m_-6755719113355655419m_-8006799879278187847gmail_signatu= re"><div dir=3D"ltr">Todd Bartrim</div><div>=C2=A0C-FSTB</div><div>Turbo 13= B RV9a</div></div></div> </font></span></div> </blockquote></div><br></div> </div></div></blockquote></div><br></div></div><br><br></div> </div> </div= > </div></div></div></blockquote></div> --001a1144c1961cf7870552238258-- From: "Todd Bartrim" <flyrotary@lancaironline.net> Date: Sat, 17 Jun 2017 08:36:32 +0000 Message-ID: <CALYfWBughkmOLw2w8DLt_r+nPgPFfveTzVj=B6=LeqtXzHd44w@mail.gmail.com> Subject: Re: [FlyRotary] Re: Jet-Hot Ceramic Coating Content-Type: multipart/alternative; boundary="001a114108f64f819b055223cd72" --001a114108f64f819b055223cd72 Content-Type: text/plain; charset="UTF-8" I'm one of those that had my rotors coated back around 2001. My reaoning was that it would transfer less heat to the oil so therefore reduce my cooling requirements. Unfortunately I originally did not have an electronic boost controller and experienced an overboost on one eventful takeoff which led to me discovering that the rotary is indeed very reliable and can tolerate severe detonation and continue to produce enough power to safely complete a flight.... but won't start again afterwards. (The full story is in the archives and may be worth a read). Anyways, on teardown I found that most of the ceramic coating had flaked off, more on the rotor that had withstood the greater detonation damage to the apex seals. Now that wad probably quite a shock to the coating, far worse than they can normally expect to see. After I rebuilt without redoing the coating I good see no appreciable difference however I didn't have enough data collected from before to say for sure. Recently, however I rebuilt the engine and I could still see the remaing ceramic coating on the rotors that had survived the detonation incident. The engine probably had about 50 hours on it after that, so it would likely have lasted much better under normal use. Todd RV9 13Bturbo On Fri, Jun 16, 2017, 22:10 A R Goldman, <flyrotary@lancaironline.net> wrote: > So this begs the question (at least to me) if we have a muffler in line > which you really can't coat in and out, will coating the header cause an > increase in thermal wear of the muffler since the exhaust gas will be > hotter? > > Rich > > Sent from my iPhone > > > On Jun 16, 2017, at 11:58 PM, Doug Lomheim <flyrotary@lancaironline.net> > wrote: > > > > Doug > > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html > --001a114108f64f819b055223cd72 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable <div dir=3D"ltr"> I'm one of those that had my rotors coated back aroun= d 2001. My reaoning was that it would transfer less heat to the oil so ther= efore reduce my cooling requirements. Unfortunately I originally did not ha= ve an electronic boost controller and experienced an overboost on one event= ful takeoff which led to me discovering that the rotary is indeed very reli= able and can tolerate severe detonation and continue to produce enough powe= r to safely complete a flight.... but won't start again afterwards. (Th= e full story is in the archives and may be worth a read).<br> Anyways, on teardown I found that most of the ceramic coating had flaked of= f, more on the rotor that had withstood the greater detonation damage to th= e apex seals. Now that wad probably quite a shock to the coating, far worse= than they can normally expect to see.=C2=A0</div><div dir=3D"ltr">=C2=A0 A= fter I rebuilt without redoing the coating I good see no appreciable differ= ence however I didn't have enough data collected from before to say for= sure.</div><div dir=3D"ltr">=C2=A0 Recently, however I rebuilt the engine = and I could still see the remaing ceramic coating on the rotors that had su= rvived the detonation incident. The engine probably had about 50 hours on i= t after that, so it would likely have lasted much better under normal use.<= /div><div dir=3D"ltr"><br></div><div dir=3D"ltr">Todd</div><div dir=3D"ltr"= >RV9 13Bturbo=C2=A0</div><span> </span><br><div class=3D"gmail_quote"><div dir=3D"ltr">On Fri, Jun 16, 2017= , 22:10 A R Goldman, <<a href=3D"mailto:flyrotary@lancaironline.net" tar= get=3D"_blank">flyrotary@lancaironline.net</a>> wrote:<br></div><blockqu= ote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc s= olid;padding-left:1ex">So this begs the question (at least to me) if we hav= e a muffler in line which you really can't coat in and out, will coatin= g the header cause an increase in thermal wear of the muffler since the exh= aust gas will be hotter?<br> <br> Rich<br> <br> Sent from my iPhone<br> <br> > On Jun 16, 2017, at 11:58 PM, Doug Lomheim <<a href=3D"mailto:flyro= tary@lancaironline.net" target=3D"_blank">flyrotary@lancaironline.net</a>&g= t; wrote:<br> ><br> > Doug<br> <br> <br> --<br> Homepage:=C2=A0 <a href=3D"http://www.flyrotary.com/" rel=3D"noreferrer" ta= rget=3D"_blank">http://www.flyrotary.com/</a><br> Archive and UnSub:=C2=A0 =C2=A0<a href=3D"http://mail.lancaironline.net:81/= lists/flyrotary/List.html" rel=3D"noreferrer" target=3D"_blank">http://mail= .lancaironline.net:81/lists/flyrotary/List.html</a><br> </blockquote></div> --001a114108f64f819b055223cd72-- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/