Return-Path: <13brv3@bellsouth.net> Received: from imf16aec.mail.bellsouth.net ([205.152.59.64] verified) by logan.com (CommuniGate Pro SMTP 4.1.4) with ESMTP id 2600967 for flyrotary@lancaironline.net; Tue, 23 Sep 2003 22:08:25 -0400 Received: from rad ([68.212.12.251]) by imf16aec.mail.bellsouth.net (InterMail vM.5.01.05.27 201-253-122-126-127-20021220) with ESMTP id <20030924020818.SRYX24914.imf16aec.mail.bellsouth.net@rad> for ; Tue, 23 Sep 2003 22:08:18 -0400 From: "Russell Duffy" <13brv3@bellsouth.net> To: "Flyrotary List" Subject: today's turbo musings Date: Tue, 23 Sep 2003 21:08:21 -0500 Message-ID: <000e01c38240$bac58310$0201a8c0@rad> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000F_01C38216.D1EF7B10" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4510 Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 This is a multi-part message in MIME format. ------=_NextPart_000_000F_01C38216.D1EF7B10 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Howdy all, =20 Well, I took a couple intercoolers to the hanger, and tried them on for size. The FC model would probably go in the right cheek, without too = much effort, though I'm worried that I'll pressurize the back of my radiator = and oil cooler if I let too much air flow through it. What to do, what to = do... =20 I also did some more research on charge temps, and intercooler effectiveness. It seems that 70F is about the best temp drop that you = can hope for with a good intercooler, at high boost. Unfortunately, size counts, and neither the FC nor FD intercooler is what would be = considered "good". Adequate might even be a stretch, especially for the FD model. = In the scheme of things, <=3D70F really isn't a deal breaker, and I'm = starting to believe it falls in the category of refinement, more than necessity, = when talking about 10 psi or less of boost, particularly when the higher = boost is only used at frigid altitudes. Turbo Tom considers it a necessity, but = I have to wonder what his criteria is. If I had a car, and were limited = to X psi of boost, I would consider intercooling necessary to make the most = power possible. Since I should easily have more power than I could ever need, = I don't see the intercooler being quite as essential. =20 =20 What does this all mean. Well, I'm going to fly it like it is, and use = up to 5 psi for takeoff. At altitude, I'll go for the gusto, but will try = to limit myself to 50" MAP, or 12 psi of boost over ambient, whichever = comes first. This should make a world of difference, and I can move on to something else. =20 =20 Cheers, Rusty=20 ------=_NextPart_000_000F_01C38216.D1EF7B10 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message
Howdy=20 all,
 
Well, I took a = couple=20 intercoolers to the hanger, and tried them on for size.  The FC = model would=20 probably go in the right cheek, without too much effort, though I'm = worried that=20 I'll pressurize the back of my radiator and oil cooler if I let too much = air=20 flow through it.  What to do, what to do...
 
I also did some = more=20 research on charge temps, and intercooler effectiveness.  It seems = that 70F=20 is about the best temp drop that you can hope for with a good = intercooler, at=20 high boost.  Unfortunately, size counts, and neither the FC nor FD=20 intercooler is what would be considered "good".   Adequate = might even=20 be a stretch, especially for the FD model.  In the scheme of = things,=20 <=3D70F really isn't a deal breaker, and I'm starting to believe it = falls in=20 the category of refinement, more than necessity, when talking = about 10 psi=20 or less of boost, particularly when the higher boost is only used at = frigid=20 altitudes.  Turbo Tom considers it a necessity, but I have to = wonder what=20 his criteria is.  If I had a car, and were limited to X psi of = boost,=20 I would consider intercooling necessary to make the most power = possible. =20 Since I should easily have more power than I could ever need, I = don't see=20 the intercooler being quite as = essential.  
 
What does this = all=20 mean.  Well, I'm going to fly it like it is, and use up to 5 = psi for=20 takeoff.  At altitude, I'll go for the gusto, but will try to = limit=20 myself to 50" MAP, or 12 psi of boost over ambient, whichever comes = first. =20 This should make a world of difference, and I can move on to = something=20 else.  
 
Cheers,
Rusty 
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