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Thu Oct 22, 2009 4:55 pm

are VW ok with wrapping the exhaust headers? I have a 2276 buggy.

Thu Oct 22, 2009 4:55 pm

It rusts the pipes in no time, but go ahead.

Thu Oct 22, 2009 4:58 pm

I live in AZ so moisture is not a problem. I am more concerned about internal temps

Fri Oct 23, 2009 7:10 am

Its a baja right?

Everything is outside right?

Wrapping the headers and what not is to not let the heat out into the engine compartment which is something you dont have.

Fri Oct 23, 2009 7:38 am

Wrapping the exhaust is used to keep the heat in the header, not so much as out of the engine compartment, (good side effect though).

By keeping the heat in the header, the exhaust gas temperature does not cool as rapidly and therefore does not shrink as much. If the gasses do not shrink, they maintain the same velocity from port to collector. When the gasses cool and shrink, they slow down. By keeping the heat in the header, it helps maintain the rate of flow and increase the scavanging abality of a header.

I have wrapped many headers and it does tend to decrease the life of the header due to the rust factor. But I tend to change setups every few years which results in a change of exhaust system anyway.

It helps in maximumizing the package you have by making it just a little more efficient. Kinda in the same way blueprinting an engine helps the efficiency or a free flowing intake system helps efficiency.

Like Glenn has stated many times, it is in the details.

Sat Oct 24, 2009 11:51 am

would coating the header system with a cold galvanize before wrapping help to extend the life of the tubing?

Mon Oct 26, 2009 5:59 am

DamnitJuice wrote: would coating the header system with a cold galvanize before wrapping help to extend the life of the tubing?

I cannot say it will or will ot help, but I have never seen a cold or hot galvanize withstand the heat exhaust puts out.

Ithink the best approach would be ceramic coating then wrapping.

As a side note, I wrapped my chevelle headers in 1994 and ran them (Hooker Super Comp race headers) until selling the car in 2002. They did not have rust issues but it was a semi trailer queen that got hammered on weekends. No driving in rain, tho towed in rain.