Really? IDK, mine are hot enough to scald but you can actually touch them while the engine is running. Can you do that with non-coated or stainless? Also right after as you kill the engine they are cool.

 

Its not to say they dont do anything, please dont take it as that. Header wrap is far better for heat retention. The coating is really just too thing to be effective. I want to steal some stuff from work, but i have a feeling uncle sam wouldn't like that. Our chit is good to thousands of degrees

 

I have heard both sides on the coating, some say uncoated makes more power. Also, doesn't a cool gas take up less room than a hot gas? Would that make your exhaust pipe size requirement smaller if the heat was lost and the gas contracted? I will be coating my set of headers just to keep the engine bay temps down, does anyone have dyno #s coated vs. uncoated?

 

One thing to keep in mind is that header wrap will void any warranty on most headers.

 

hotter air will be at a higher pressure and flow out faster. thats the idea. it has more energy.

 

is this because the wrap can trap water and force rusting?

 

...about 200 bucks

 

The header wrap actually increases the temperature of the gas inside the primary to the point where mild steel starts to burn. The headers fail from the inside out. Ceramic coating is good because they coat the inside of the pipe as well as the outside, it protects the steel from those temps.

 

not all ceramic headers are all the way coated, most are though, my p/s lt's are all the way through. the higher heat produces a faster scavenging process. I've personally expierenced much cooler engine bay temps, I still need to wrap my K&N fipk with header wrap.

 

i wouldn't wrap a mild steel header. I've worked with stainless headers on a high output turbo motor which were wrapped- no problems.