Exhaust manifold heat wrap

joe cavalier sri · Post by **joe cavalier sri** » Wed Mar 19, 2014 4:50 pm

Hi I was thinking of wrapping my exhaust with heat wrap I have 40meters with the proper stainless ties what's the pros and cons of it I don't see much on here about it ? Cheers

P.s I was thinking of wrapping my standard 4 2 1 c20xe manifold ?

Post by **planetc** » Wed Mar 19, 2014 5:14 pm

Cavalier342 · Post by **Cavalier342** » Wed Mar 19, 2014 5:31 pm

I presume to make it look a bit shinier? The standard fitted exhaust shields are adequate to be honest, so if it's heat problems you have then check they're in place, as for manifolds, I'd leave it be to be fair, something will melt eventually.

iancav6 · Post by **iancav6** » Thu Mar 20, 2014 9:43 pm

Cavalier342 wrote:I presume to make it look a bit shinier? The standard fitted exhaust shields are adequate to be honest, so if it's heat problems you have then check they're in place, as for manifolds, I'd leave it be to be fair, something will melt eventually.

Think he means something like this,not a heat shield?

The main pro IHMO is reduced under bonnet temperatures.Used a lot on our race cars to stop the exhaust cooking everything in sight including the chassis.

Can't really see any downside TBH.

Kevwaggy · Post by **Kevwaggy** » Fri Mar 21, 2014 7:35 am

Hot gasses flow quicker...

Only con I can think of is if the rocket cover leaks oil on to it it can soak it up then combust!

TurboDan · Post by **TurboDan** » Fri Mar 21, 2014 11:54 am

Yeah try dipping it in abit of oil and then light it. You wont want do do it then.

HAIRIBO · Post by **HAIRIBO** » Fri Mar 21, 2014 12:14 pm

Surely the wholepoint of heat wrap is its none flammable?

Post by **James McGrath** » Fri Mar 21, 2014 1:51 pm

Kevwaggy wrote:Hot gasses flow quicker...

Only con I can think of is if the rocket cover leaks oil on to it it can soak it up then combust!

It would only combust if there was a spark. You could spray petrol over a hot exhaust manifold and it won't catch fire.

All the same it's not safe to have anything flammable hanging around on it's own for too long.

Post by **planetc** » Fri Mar 21, 2014 1:57 pm

Surely that depends on the temperature?

Post by **James McGrath** » Fri Mar 21, 2014 2:13 pm

planetc wrote:Surely that depends on the temperature?

The autoignition temperature of petrol is between 246 and 280 °C

That make it safer than paper which has an autoignition temperature of between 218–246 °C

Post by **planetc** » Fri Mar 21, 2014 7:07 pm

Hmm, but paper doesn't take your eyebrows with it!

joe cavalier sri · Post by **joe cavalier sri** » Sat Mar 22, 2014 8:28 am

iancav6 wrote:
Cavalier342 wrote:I presume to make it look a bit shinier? The standard fitted exhaust shields are adequate to be honest, so if it's heat problems you have then check they're in place, as for manifolds, I'd leave it be to be fair, something will melt eventually.
Think he means something like this,not a heat shield?

The main pro IHMO is reduced under bonnet temperatures.Used a lot on our race cars to stop the exhaust cooking everything in sight including the chassis.

Can't really see any downside TBH.

That's what I mean if you spray your manifold with heat resistant paint b4 applying the pre soked heat wrap in water then app lining it tightly let it dry so it becomes tighter the get a heat resistant water proof spray to spray over the heat wrap then water won't get inside and rust it so it says on a website I've been reading up on it I wasn't too sure on it first ?

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Exhaust manifold heat wrap

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