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Underbody braces, turbos and more!

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PostPosted: Sun Oct 16, 2011 4:14 pm 
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Was looking at some Plastikote hi temp paint for my turbo manifold,does anyone have any experience with or any similar product and does it hold up to the extreme temperatures seen at the manifold?


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PostPosted: Sun Oct 16, 2011 5:58 pm 
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paint cooks right off the manifold. it looks nice for about a minute but the heat burns it off pretty quickly. i've never had a rattle can coating, even rated for 1500*f, last more than a month.

about the only coating that holds up is a real ceramic coating that is baked on as part of the application.

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PostPosted: Sun Oct 16, 2011 6:23 pm 
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I always though exhaust heat wrap looked cooler, it also has some benefits.

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PostPosted: Sun Oct 16, 2011 6:41 pm 
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The mad quebecer
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Lots of benefits, but many downsides also. The wrap keeps moisture trapped inside, thus, making corosion damages to occur at a much faster rate. Even Stainless steel manifolds will hardly cope with the moisture from the wrap. However, wrapping the runners is a must if you want to lower engine bay temperatures and increase turbo efficiency.
What's a good turbo manifold anyway? $5-600?? If the car runs top notch on a decent tune and quality parts, purchasing a manifold every 3-4 years should not be an issue.

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PostPosted: Sun Oct 16, 2011 7:20 pm 
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the moisture retention issue is what convinced me to use a blanket instead of a wrap on my manifold. it's more a reflective tent that doesn't trap moisture but it still lowers engine bay temps by cutting down on reflected heat.

my turbo manifold has been discontinued and i'll never find any other manufacturer capable of fabricating a replacement. that really limits my backup plan. :cry:

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My Cardomain Page -Ol' Blue
My YouTube Channel
My Photo Gallery
SAAB Sonett II


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PostPosted: Sun Oct 16, 2011 8:59 pm 
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Well I've used Rustoleum BBQ high temp paint (black) for a number of items.
Everything from steering knuckles to Exhaust manifolds.
It actually works quite well. Brush it on, a few coats and your done.
When I use it with exhaust wrap, I paint the item first, then wrap,
then try to seal the wrap with the paint to cut down on moisture.
It gets a bit smoky when it's curing under high heat, but still seems
to hold quite well, and it's relatively cheap for a 1QT. can.

Quote:
my turbo manifold has been discontinued and i'll never find any other manufacturer capable of fabricating a replacement. that really limits my backup plan.

I've been thinking about that a lot lately. Maybe if we pester Jard enough, he can start stocking them again.
At least have a Master jig, and be able to duplicate it without a donor car. Hmm?
My other plan is to pull the manifold and downtube off yearly, strip the wrap,
recoat and re-wrap. PITA, but it might triple or quadruple the lifespan.

Quote:
i'll never find any other manufacturer capable of fabricating a replacement

Then again, never say never. Lot's of people could, just depends on their interest
and your cash.


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PostPosted: Sun Oct 16, 2011 9:26 pm 
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I've had good results with a rattle can paint. it was for painting headers. since my BBQ paint only lasted 267 seconds and I'm too cheap for ceramic I gave it a try and was impressed with the results. I baked it before installing it on the car. it's from VHT and it's rated for 1300-2000°F.
found an online pic of it
Image

I should have done my SX4 manifold too before installing it, and wrap it. It seems like I have heat issues too. my IAT datalogs show above 50°C air inlet on the highway when it's 15 outside. I won't tell you the reading when it's standing still at idle :shock:

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PostPosted: Mon Oct 17, 2011 8:05 pm 
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The mad quebecer
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t3 ragtop wrote:
my turbo manifold has been discontinued and i'll never find any other manufacturer capable of fabricating a replacement. that really limits my backup plan. :cry:


Your manifold is a one-off. If it ever crack, I can duplicate it without too many troubles. No worries pal.

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