exhaust rappin

[wolf666]

wots the benifits guys apart from it lookin cool cheers guys

[Copey]

if you wrap the manifold its ment to keep the engine bay cooler

[Mr2Caps]

I think I also read somewhere that by keeping the heat in the exhaust the gasses flow faster making the exhaust work more efficiently. I'm not sure if this will give you a noticeable horsepower gain. Can't remember more about it than this though!

[vibrating_Cake]

I think I also read somewhere that by keeping the heat in the exhaust the gasses flow faster making the exhaust work more efficiently. I'm not sure if this will give you a noticeable horsepower gain. Can't remember more about it than this though!

 

i also also read somewhere its spelled wrapping.... i thought you wanted an exhaust to rap like a black man with a big watch around his neck

 

 

 

 

 

 

i only use it to stop it burning things close to the exhaust manifold....

not noticed any performance increase, have noticed lower underbonnet temparatures,

but unless its a stainless steel manifold, i wouldnt use it, it holds in moisture, which on a morning burns off and releases lots of steam, dependant on how wet it is, when you dont drive the car for a few hours it holds moisture on the bare metal surface of the exhaust manifold and it rusts.... rather quickly,

also if you use the car in winter and get salt water on the exhaust mani (gritsalt on the road) it rusts the mani even faster....

so yes, get it if the car doesnt get wet and stays in a dry garage most of the time, works wonders,

or if you are having problem with wires/pipes etc near the exhaust manifold getting too hot, use it then too. but other than that its more hassle than its worth in my opinion

[RETRO_AL]

I used it once on my harrier,for some reason it made the four branch split,might have been a cheapo manifold but i wont use it again

[wonderfulweasel]

I use it on my crossflow manifold. It does seem to keep the temperature in the engine bay down a bit.

 

It's been on there for three or four years now and doesn't seem to have caused the manifold any problems, but then the Escort isn't used daily and is kept in a garage.

[Wessie]

use it on the race cars as the inlet ports are next to the exhaust ports, it definatly holds the moisture in your better of getting your manifold coated if you can afford it

[Fiesta Steve]

I have heard from a reliable source that it causes the manifold to get so hot that over time it burns the carbon out of the steel making the manifold very brittle and they can crack and fall apart as in Al's case. Also it becomes unweldable rendering the manifold useless.

 

Those that say they've not had a problem probably aren't gettingt he manifold very hot

[petrolhead]

Pro's

It does reduce underbonnet temperatures, which mean intake temperatures will be colder. A 5'c drop may give you a horsepower.

 

Less likely to get burnt while working on the engine!

 

Hot gases are supposed to flow better but I think the gas will just lose its heat further down the exhaust.

 

Cons

It can shorten the life of the manifold (rusting and cracking)

 

There are some internet stories about exhaust wrapping causing fires (concentration of heat). Not sure about that

[Superblue76]

It ruined my manifold, I wont use it again