Return-Path: Sender: (Marvin Kaye) To: flyrotary Date: Mon, 17 Mar 2003 08:29:10 -0500 Message-ID: X-Original-Return-Path: <13brv3@mchsi.com> Received: from sccmmhc01.mchsi.com ([204.127.203.183] verified) by logan.com (CommuniGate Pro SMTP 4.0.6) with ESMTP id 2054385 for flyrotary@lancaironline.net; Sun, 16 Mar 2003 11:54:01 -0500 Received: from rad ([12.218.74.116]) by sccmmhc01.mchsi.com (InterMail vM.4.01.03.27 201-229-121-127-20010626) with ESMTP id <20030316165400.SFKP22382.sccmmhc01.mchsi.com@rad> for ; Sun, 16 Mar 2003 16:54:00 +0000 Reply-To: <13brv3@mchsi.com> From: <13brv3@mchsi.com> X-Original-To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Fuel Injection X-Original-Date: Sun, 16 Mar 2003 10:53:48 -0600 X-Original-Message-ID: <000001c2ebdc$a0b38fd0$0201a8c0@rad> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C2EBAA.56191FD0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4510 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C2EBAA.56191FD0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable The picture at http://kgarden.com/cozy/cz660.jpg shows the stock primary injector rail. Is that the regulator at the left hand end? If so, I = don't see any way that it adjusts to manifold pressure. --- The pressure regulator would be on the rear end of the secondary = rail, and it will have a vacuum hose fitting on it. What you're looking at is = the pulsation damper. BTW- in 3rd gen cars, this damper is the number one = cause of engine fires! They all seem to eventually leak. If you do end up = using one of these, get a new one. =20 =20 --- Also, for help identifying parts, you can download the Mazda parts diagrams for any year RX-7 from Mazdaformance (a GREAT company). Use = the "parts diagrams" link on this page- = http://www.mazdaformance.com/rx7.htm =20 OK, so this takes care of the primary injectors. Since they go straight = into the block I dont see that it would make sense to move them to somewhere = else on the intake. But, what do I do about the secondary injectors? I gather they normally fit into the bit of manifold I dont have, So should I = mount them on the tubes somehow. =20 --- Yes, mount them in the tubes, or use an aftermarket TB that has = bosses for the injectors built in. =20 --- Another question, are you using Tracy's EC2? If so, you won't be = able to use all the stock 3rd gen injectors. The primaries are 550's, and = the secondaries are 850's. That's probably too much of a difference for the = way Tracy set up his controller. =20 In the second picture you can see my cut off stock manifold flange. It = looks like some aluminum J bends would weld up to this ok, but now - what's a = good way to attach the throttle body? I got a 2nd gen unit - see http://kgarden.com/cozy/cz661.jpg but I don't see how this can easily = attach to four pipe ends. I've looked at the parts Paul Lamer is making, but it doesnt seem like these would buy me much. =20 --- Do you have room on top of the engine? Have you looked at the wrap = over intake and TB that Atkins sells? It's not perfect, but it sure is easy. = I like easy, and I don't mind paying for it :-) =20 Rusty Turbo 13B powered RV-3 (experimental aircraft)...Be Afraid :-) 1993 RX-7 R1... Not stock, carry bail money :-) ------=_NextPart_000_0001_01C2EBAA.56191FD0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

The picture at http://kgarden.com/cozy/cz660.= jpg=20 shows the stock primary injector rail. Is that the regulator at the left = hand=20 end? If so, I don't see any way that it adjusts to manifold = pressure.

--- The pressure=20 regulator would be on the rear end of the secondary rail, and it will = have a=20 vacuum hose fitting on it.  What you're looking at is the pulsation = damper.  BTW- in 3rd gen cars, this damper is the number one = cause of=20 engine fires!  They all seem to eventually leak.  If you do = end up=20 using one of these, get a new one. 
 
--- Also, for help identifying = parts, you=20 can download the Mazda parts diagrams for any year RX-7 from = Mazdaformance (a=20 GREAT company).  Use the "parts diagrams" link on this page-  = http://www.mazdaformance.co= m/rx7.htm
 
OK, so this takes care of the primary injectors. = Since they go=20 straight into the block I dont see that it would make sense to move them = to=20 somewhere else on the intake. But, what do I do about the secondary = injectors? I=20 gather they normally fit into the bit of manifold I dont have, So should = I mount=20 them on the tubes somehow.
 
--- Yes, = mount them in=20 the tubes, or use an aftermarket TB that has bosses for the = injectors built=20 in.
 
--- = Another question,=20 are you using Tracy's EC2?  If so, you won't be able to use all the = stock=20 3rd gen injectors.  The primaries are 550's, and the secondaries = are=20 850's.  That's probably too much of a difference for the way Tracy = set up=20 his controller. 


In the second picture you can see my cut off stock manifold = flange.=20 It looks like some aluminum J bends would weld up to this ok, but now - = what's a=20 good way to attach the throttle body? I got a 2nd gen unit - see http://kgarden.com/cozy/cz661.= jpg=20 but I don't see how this can easily attach to four pipe ends. I've = looked at the=20 parts Paul Lamer is making, but it doesnt seem like these would buy me=20 much.
 
--- Do you have room on = top of the=20 engine?  Have you looked at the wrap over intake and TB that Atkins = sells?  It's not perfect, but it sure is easy.  I like easy,=20 and I don't mind paying for it  :-)  

Rusty
Turbo 13B powered RV-3 = (experimental=20 aircraft)...Be Afraid :-)
1993 RX-7 R1... Not = stock, carry bail=20 money :-)
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