Do Exhaust Wraps really work?

**Memphis Raines** · September 3rd, 2008 11:06 AM

It's always been a staple topic at my suking garage mechanics so I'm wondering if they really do work.

I guess it is pretty obvious that it may significantly help reduce heat in the engine bay but what other performance benefits can it possibly offer?

.

**niky** · September 3rd, 2008 12:05 PM

Heat yes... performance... not really much... supposedly provides better scavenging, but any gains, from what I've seen, are minimal. It's worth doing for the heat alone, though.

**flakez** · September 3rd, 2008 12:21 PM

yup, laking tulong against heat. plus mas malinis tignan headers lalo na kung yung headers mo eh kinakalawang. hehehe

**HyBrideVo** · September 3rd, 2008 12:25 PM

IMO, it is better to have your exhaust manifold PnP'd or extrude hone'd first and get a good ceramic coat done altogether. Then if you want to use heat wraps for less underhood temps you can use that as well.

**rion** · September 3rd, 2008 07:34 PM

what are those wraps made of?

Imo, it doesn't look malinis, parang old engine mummified. hehe...

how about this? do this really work?

or will break instead?

**niky** · September 4th, 2008 01:36 AM

I forget.. asbestos, I think?

The intake manifold cooler is only for drag racing... you use it to cool down the intake manifold between runs... by the end of the quarter mile, your manifold is hot again...

Besides, stopping on the road and opening your hood every five minutes just to put a bag of ice in is silly.

**HyBrideVo** · September 4th, 2008 01:40 PM

Originally Posted by rion

what are those wraps made of?

Imo, it doesn't look malinis, parang old engine mummified. hehe...

Product Description from Design Engineering, Inc.

The first step in controlling under hood temperatures is to use DEI's exhaust wrap. This product is designed to keep heat in the exhaust and evacuate it out of the engine compartment. Wrapping your headers will reduce under hood temperatures by up to 50% while providing additional horsepower, engine protection and passenger comfort. All exhaust and header wraps are not alike! We start with a hi-temp fiberglass composite material then add a proprietary coating to enhance heat retention and expand durability. We are also the only manufacturer to add 1/4" guidelines to the exhaust wrap to ensure proper installation without the guess work.

* Reduce under hood temperatures a realistic 50%
* Improves horsepower
* Only exhaust wrap with installation guide lines
* Added durability and heat retention

**rion** · September 4th, 2008 07:13 PM

hehe... silly nga.

I have no idea, puwede e-apply yung cloth wrap sa fiber glass...

thanks.

**Memphis Raines** · September 4th, 2008 09:43 PM

Originally Posted by niky

I forget.. asbestos, I think?

My mechanic kept mentioning before that it's made of 'non-asbestos' material. They often refer to it as thermal wrapping. He also claimed that it can reduce at least 50% of engine bay heat and since it lowers intake temps so it can give more Hp.

Yup it does look like a mummified exhaust system

but it sure ain't medical gauze bandages hehehe.

.

**niky** · September 5th, 2008 11:32 AM

Hmmm... possibly health reasons... though having fluffy bits of fiberglass entering your lungs when you clean the engine bay ain't exactly healthy.

Did try copper-based wrap before... but it didn't work as well as the fiber-based ones at capping heat... though we didn't dyno-test it for any effects on scavenging (it might have been better... who knows?)