X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from email2k3.itlnet.net ([64.19.112.12] verified) by logan.com (CommuniGate Pro SMTP 5.0.9) with ESMTP id 1056790 for flyrotary@lancaironline.net; Mon, 03 Apr 2006 11:15:40 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.19.112.12; envelope-from=jwvoto@itlnet.net Received: from rav.itlnet.net (unverified [192.168.10.149]) by itlnet.net (Rockliffe SMTPRA 6.1.22) with SMTP id for ; Mon, 3 Apr 2006 10:14:54 -0500 Received: from JWVOTO (unverified [64.19.115.33]) by itlnet.net (Rockliffe SMTPRA 6.1.22) with ESMTP id for ; Mon, 3 Apr 2006 10:14:53 -0500 Message-ID: <018b01c65732$cc2b2a00$0100007f@JWVOTO> From: "Wendell Voto" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Oil pressure port size Date: Mon, 3 Apr 2006 10:24:39 -0500 MIME-Version: 1.0 Content-Type: multipart/related; type="multipart/alternative"; boundary="----=_NextPart_000_0183_01C65708.D0D4CE00" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4133.2400 X-MIMEOLE: Produced By Microsoft MimeOLE V5.50.4133.2400 This is a multi-part message in MIME format. ------=_NextPart_000_0183_01C65708.D0D4CE00 Content-Type: multipart/alternative; boundary="----=_NextPart_001_0184_01C65708.D0D4CE00" ------=_NextPart_001_0184_01C65708.D0D4CE00 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message Subject: [FlyRotary] Re: Oil pressure port size The oil pressure sending unit on my '87 13B appears to be 10x = something. The adapter diameter is right but threads are too course on = the purchased adapter. Barry mentions a 1/8 BSPT which I have never = heard of (haven't heard of a lot of things). I went to JC Whitney site = and they show a 1/8x28 BSP adapter. Barry,is this what you're referring = to?=20 OK, I just did some searching on the RX-7 club forum, and it sounds = like the oil pressure thread is indeed 1/8"-28 BSPT. Someone offered a = link to the adapter they used to convert to 1/8 NPT. http://www.pegasusautoracing.com/ProductDetails.asp?RecId=3D3142 One of the threads mentioned that Honda also used this size for their = oil pressure fittings, so it's not inconceivable that you may find one = of these adapters hanging on a peg at a local auto parts shop. =20 I just couldn't understand how I was able to just grab a fitting from = the JC Whitney kit if the thread was actually a BSPT, since I figured = that wasn't included. Now that I look at the description of the = contents that Tommy sent me, I can see that there was a typo. What was = listed as "1/8" 288SP" should have actually read "1/8" 28BSP". =20 Includes, M10x1.0, M12x1.0, M14x1.5, M16x1.5 and 1/8" 288SP = external-thread adpaters, all with 1/8" x 27NPTF internal thread. P/N 13UC9267A....each $4.99=20 Mystery solved. Now I just have to change my notes. It might be better to get an original Mazda oil pressure sending unit = (original one seeps oil) to fill the hole and use a gauge that will be = compatible with it and get oil for the re-drive from some other source. = Does anyone know if the Mazda sending unit is compatible with after = market gauges? =20 I believe the stock oil pressure sending unit is an odd duck, and = probably not compatible with normal aftermarket gauges. The other = problem is that the stock units (at least on the FD) are probably the = least reliable part on the whole engine. Back when Mazdaformance was in = business, they actually listed the oil pressure sender in the "tune up = parts" section :-)=20 Good luck, Rusty (trying to redeem myself) Okay, you're forgiven, just send me the money I wasted on the wrong = part. Seriously, thanks Barry and Rusty for your help. Will probably need = it again soon. Wendell ------=_NextPart_001_0184_01C65708.D0D4CE00 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message
 
Subject: [FlyRotary] Re: Oil = pressure=20 port size

The = oil pressure=20 sending unit on my '87 13B appears to be 10x something.  The = adapter=20 diameter is right but threads are too course on the purchased = adapter. =20 Barry mentions a 1/8 BSPT which I have never heard of (haven't heard = of a lot=20 of things).  I went to JC Whitney site and they show a 1/8x28 BSP = adapter. Barry,is this what you're referring to? 
 
OK, I = just did some=20 searching on the RX-7 club forum, and it sounds like the oil = pressure=20 thread is indeed 1/8"-28 BSPT.  Someone offered a link to the = adapter=20 they used to convert to 1/8 NPT.
 
http://www.pegasusautoracing.com/ProductDetails.asp?RecId=3D3142
 
One of the threads mentioned = that Honda=20 also used this size for their oil pressure fittings, so it's not = inconceivable=20 that you may find one of these adapters hanging on a peg at a local = auto parts=20 shop. 
 
I just = couldn't=20 understand how I was able to just grab a fitting from the JC Whitney = kit=20 if the thread was actually a BSPT, since I figured that wasn't=20 included.  Now that I look at the description of the contents = that Tommy=20 sent me, I can see that there was a typo.  What was listed as = "1/8"=20 288SP" should have actually read "1/8"=20 28BSP".  
 
 Includes, = M10x1.0,=20 M12x1.0, M14x1.5, M16x1.5 and 1/8" 288SP external-thread adpaters, all = with=20 1/8" x 27NPTF internal thread.
P/N 13UC9267A....each $4.99 
 
Mystery=20 solved.  Now I just have to change my=20 notes.
 
It=20 might be better to get an original Mazda oil pressure sending unit = (original=20 one seeps oil) to fill the hole and use a gauge that will be = compatible with=20 it and get oil for the re-drive from some other source. = Does anyone know=20 if the Mazda sending unit is compatible with after market = gauges?  
 
I = believe the stock=20 oil pressure sending unit is an odd duck, and probably = not compatible=20 with normal aftermarket gauges.  The other problem is that = the stock=20 units (at least on the FD) are probably the least reliable part on the = whole=20 engine.  Back when Mazdaformance was in business, they = actually=20 listed the oil pressure sender in the "tune up parts" section=20 :-) 
 
Good=20 luck,
Rusty (trying=20 to redeem myself)
 
Okay, you're=20 forgiven, just send me the money I wasted on the wrong=20 part.
 
Seriously,=20 thanks Barry and Rusty for your help.  Will probably need it = again=20 soon.
 
Wendell
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