How Much Heat Wrap To Wrap An Exaust Manifold

[s13_Skyline_inside]

as the topic states, if anyone has used heat wrap to wrap up their manifold, how much did you use approximately, would you say 7.5 feet at 2.5 inch wide would be enough or should i just go for the 15 ft?

[murrayis]

I would allow 3 - 5 ft per runner remember you need to overlap each time around. When I did mine I didnt get much change out of a 50ft roll of 1inch wide wrap.

[s13_Skyline_inside]

ouch no worries, thanks ill go for the 15ft for starters and see how i go, the stuff im getting is 2.5", if i need more i can order another 15ft roll

thanks

[adamskill]

i wrapped my dump/front pipe with 1 inch and used all of the 5 meter roll from memory.

[crack]

has anyone had any trouble with manifolds cracking after being wrapped?

[meet07]

yeah I always thought about that. I would think they would with the cheaper manifolds that are made out of 304 and 321 Sus. There already crack with the turbo heat....then you talking about trapping the heat more. I think it is possible.

[3LGODZILA]

i was considering wrapping my manifold, turbo & dump pipe, i spoke to 2 owners of 2 different exhaust workshops & they both warned me of cracking. and one of them told me it would be a waste of time anyways, that i would notice no differnce in power, i was expecting higher velocity exhaust flow to quicken spool (probably fark all) , & cooler engine bay/intake temps. but this is on a stock rb25det besides full 3inch exhaust & upped boost, he told me the stock heatshield should keep the temps down enough.

-would it hurt to wrap my mild steel front/dump pipe ?

-and also if i did, it would make my EGT higher wouldnt it? and this would only cause bad effects on my ceramic turbine?

Edited June 14, 2009 by jimmys-33T

[ClutchBurndout-:(]

oh oh just the topic i want to see, sorry if im highjacking.

i got a stock setup apart from my dump/front which is 3 inch, im planning to heat wrap ist since the heatsheild didnt fit on this dump, is it work heatwrapping? i mean the obveous reason is stopping the heat from hitting the rest of the car but do i realy need it? perhaps i will on the realy hot days in summer when the engine might get hotter but atleast the front dump will cool down quicker with no heatwrap

any ideas? cheers