if youre that worried put a bit of oil all over them i find that oil never fully burns off so might be a bit of protection.

I've heard that they do such a great job of retaining heat, the metal fatigues and falls apart. It's the high heat not the rust that's bad.

Quote:

I heard that too.
But I still run it.

well i gave the heat wrap a go

and i tell you what they must hold a shed load of heat in the primaries

the engine bay was much cooler, but the enourmous amount of heat kept in my exhaust caused a large backfire and a 1 foot flame from my exhaust within 5 seconds of switching my engine off

ive heard its pretty common for bridgeports to do that depending on your exhaust setup..

so while i liked the cooler engine bay temps
ive ditched the wrap, i really dont wanna be shooting flames when i stop to refuel

NOOOO

Unless you have stainless exhaust then it will corrode from the inside out!!

Exhaust gasses are fairly corrosive and this is made alot worse when you wrap them due to the sustained high temps that they will see.

i am not even convinced it is a good idea on turbo thick wall manifolds after seeing large flaky bits falling off the inside walls of these types of wrapped manifolds.

I worked in an exhaust shop for two years and that is my opinion anyway.

If you want a better option go get some ACL heat shielding material HR140GTR i think.

I worked there for a year as an Engineer and it is a good product and easily formed into a manifold or body style of shield and will stop the radiant and soak effects but will allow a bit of convection to carry heat away on the move.

Ben