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would it be a good or bad idea to header wrap a turbo manifold??

If you have extra long runners from the manifold (without wrap) then there may be heat loss which would cause loss of exhaust gas velocity -> higher spool up time.
If you dont have long runners then the benefit is that they keep exhaust temperature from heating up the intake air.

The disadvantage of wraps is that they keep the temparature inside the pipes (no cooling of pipes) and temparature builds up over time. Also the manifold is more suceptible to cracks because of the high temparatures.

ariesdude wrote:Also the manifold is more suceptible to cracks because of the high temparatures.

Although you would think that, you are wrong. Manifolds crack do to extreme temperature changes, like You are driving and your radiator cap comes off and 180 degree water hits your 1100 degree manifold. Heat wrap actually saves your manifolds. They keep the hit in and you have less of a chance of cracking em when it rains out.

The only time I have ever heard of a manifold cracking from heat wrap is either OBX or SSAutochrome manifolds cracking cause "heat wrap" was used, this again is bad information cause 65% of the people I know with OBX or SS autchrome stuff have cracks and no heat wrap. So if your manifold is made out of crappy material then it will crack with or without it.

But If you are using a stock manifold, I don't think you need it, but it wouldn't be a bad thing.

BuGS wrote:

ariesdude wrote:Also the manifold is more suceptible to cracks because of the high temparatures.

Although you would think that, you are wrong. Manifolds crack do to extreme temperature changes, like You are driving and your radiator cap comes off and 180 degree water hits your 1100 degree manifold. Heat wrap actually saves your manifolds. They keep the hit in and you have less of a chance of cracking em when it rains out.

The only time I have ever heard of a manifold cracking from heat wrap is either OBX or SSAutochrome manifolds cracking cause "heat wrap" was used, this again is bad information cause 65% of the people I know with OBX or SS autchrome stuff have cracks and no heat wrap. So if your manifold is made out of crappy material then it will crack with or without it.

But If you are using a stock manifold, I don't think you need it, but it wouldn't be a bad thing.

I am still learning about turbo setups - so sorry about the wrong info.
Anyway
1) is turbo manifold = stock manifold?
2) Doesnt extreme heat make the header material brittle and prone to cracks? (and isnt high exhaust temps common for turbo engines?)
3)Doesnt the turbo manifold have extra load due to turbo vibrations and possibly turbo weight?

Ok well i have the 323 gtx manifold from Corksport..unsure of the quality, and a 3" adapter for the turbo i am using!! So it would ok to wrap the manifold and adapter??

Ya. Sounds fine.

And to answer your questions, There is a higher exhaust temperature in N/a usually, unless the turbo setup runs lean. N/A's can run much leaner and hotter than turbo setups. And header wrap is like fiberglass, so even after extreme heat it is still somewhat plyable.

Joey's mx wrote:would it be a good or bad idea to header wrap a turbo manifold??

It may be a good idea on some applications but not the best idea. In your case if you are using a stock manifold and turbo, their should be no need to wrap an exhaust manifold. I would rather spend the money on a ceramic coat and be done with it. It looks better than a wrap and does the same thing - holds the heat in where it is needed.

cold makes metal brittle not heat.. heat makes it bend easier