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Return-Path: <13brv3@bellsouth.net> Received: from imf23aec.mail.bellsouth.net ([205.152.59.71] verified) by logan.com (CommuniGate Pro SMTP 4.1.1) with ESMTP id 2530643 for flyrotary@lancaironline.net; Sat, 16 Aug 2003 20:14:30 -0400 Received: from rad ([68.212.14.21]) by imf23aec.mail.bellsouth.net (InterMail vM.5.01.05.27 201-253-122-126-127-20021220) with ESMTP id <20030817001429.DLYM8750.imf23aec.mail.bellsouth.net@rad> for ; Sat, 16 Aug 2003 20:14:29 -0400 From: "Russell Duffy" <13brv3@bellsouth.net> To: "Flyrotary List" Subject: I'm legal, but need a new heat shield plan Date: Sat, 16 Aug 2003 19:14:30 -0500 Message-ID: <00cd01c36454$879e12e0$0201a8c0@rad> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00CE_01C3642A.9EC80AE0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4510 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Importance: Normal This is a multi-part message in MIME format. ------=_NextPart_000_00CE_01C3642A.9EC80AE0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Greetings, =20 Well, I'm 3 for 3 with the local DAR, and now have an airworthiness certificate for the plane. This is getting easier every time, and I = didn't anticipate that it was going to be a problem. =20 As soon as he left, I started replacing my primary injectors. Of course this meant pulling the turbo and intake out of the way enough to get the injectors out. That was all pretty easy, since I didn't have to remove = any hoses or anything to move the turbo and intake a couple inches. The new injectors are in, and don't leak fuel under pressure. Unfortunately, I couldn't run the engine due to the incredible thunderstorms. Heck, I = feel lucky to be alive with some of the lightning that was hitting all around = my hanger :-) =20 =20 Now, here's the problem of the day. I used that exhaust wrap stuff that everyone sells for wrapping headers, but I wrapped the turbo with it. = As I was removing the stuff to get to the nuts to remove the turbo, I found = that it had cooked into a hardened form, and literally crumbled to = (irritating, fiberglass-like) dust when trying to get it off. It was OK on the pipe itself, but anywhere that touched the turbo was toast. This sort of = puts me back to square one with heat shielding. I can probably go ahead and run = the engine tomorrow, since the top cowl is off, and there's plenty of = airflow, but I will certainly need to do something before closing up the cowl and flying. =20 =20 Option 1- I can probably make a flat stainless shield that would go = between the intake and turbo. This would block the heat from the intake, but wouldn't protect anything else. If I do this, I'll need some sort of = heat coating for the inside of the cowl. =20 =20 Option 2- I still like the idea of wrapping the whole turbo with some = sort of heat insulator, but need suggestions of what could be used. = Eventually, if the turbo is working out, I'd probably buy a new turbo and manifold, = and have them ceramic coated. The current turbo and manifold are Ebay = items, that I got cheap. The manifold has the standard cracks, and the turbo = has a bit more play than I like in the shaft. I never had any plans to run = these for a long time, just long enough to prove the turbo is worth keeping. = =20 So, for all you folks that know more about heat shielding material than = I do, what should I be looking at, and would you think this material would = be suitable for wrapping the turbo itself? =20 =20 Thanks for any suggestions. Rusty (legal, but stupid enough to fly yet)=20 ------=_NextPart_000_00CE_01C3642A.9EC80AE0 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Message

Greetings,

Well, I'm 3 for = 3 with the=20 local DAR, and now have an airworthiness certificate for the = plane. This=20 is getting easier every time, and I didn't anticipate that it was going = to be a=20 problem.

As soon as he = left, I=20 started replacing my primary injectors. Of course this meant = pulling the=20 turbo and intake out of the way enough to get the injectors = out. That=20 was all pretty easy, since I didn't have to remove any hoses or anything = to move=20 the turbo and intake a couple inches. The new injectors = are in,=20 and don't leak fuel under pressure. Unfortunately, I couldn't = run the=20 engine due to the incredible thunderstorms. Heck, I feel = lucky to be=20 alive with some of the lightning that was hitting all around my hanger=20 :-)

Now, here's the = problem of=20 the day. I used that exhaust wrap stuff that everyone sells for = wrapping=20 headers, but I wrapped the turbo with it. As I was removing = the stuff=20 to get to the nuts to remove the turbo, I found that it had cooked = into a=20 hardened form, and literally crumbled to (irritating, = fiberglass-like) dust=20 when trying to get it off. It was OK on the pipe itself, but = anywhere=20 that touched the turbo was toast. This sort of puts me back = to square=20 one with heat shielding. I can probably go ahead and run the = engine=20 tomorrow, since the top cowl is off, and there's plenty of airflow, = but I=20 will certainly need to do something before closing up the cowl and=20 flying.

Option 1- = I can=20 probably make a flat stainless shield that would go between the = intake and=20 turbo. This would block the heat from the intake, but wouldn't = protect=20 anything else. If I do this, I'll need some sort of = heat coating=20 for the inside of the=20 cowl.

Option 2- I = still like the=20 idea of wrapping the whole turbo with some sort of heat insulator, = but need=20 suggestions of what could be used. Eventually, if the = turbo is=20 working out, I'd probably buy a new turbo and manifold, and have = them=20 ceramic coated. The current turbo and manifold are Ebay items, = that I got=20 cheap. The manifold has the standard cracks, and the turbo has a = bit more=20 play than I like in the shaft. I never had any plans to run these = for a=20 long time, just long enough to prove the turbo is worth=20 keeping.

So, for all you = folks that=20 know more about heat shielding material than I do, what should I be = looking at,=20 and would you think this material would be suitable for wrapping the = turbo=20 itself?

Thanks for any=20 suggestions.

Rusty (legal, = but stupid=20 enough to fly yet)

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