pr0jectezek1el

hey guys

i was just wondering if it is worth using exhaust wrap to cool down my engine bay?
also can someone tell me the pros and cons if any using exhaust wrap

thanks

elevatethis

i'll assume you're talking about wrapping your exhaust manifold...

I mean, excessive heat robs power - so its pretty self explanatory. However, read a warranty card on most headers, they say that using this wrap voids the warranty...so be careful.

92 civic VX B18c

if your running a ceramic coated header, don't wrap it, mine cracked shortly after putting a header wrap in it

pr0jectezek1el

mines a stainless steel.

Mista Bone

my stillen ceramic coated header doing fine 6 years later.

JICEK9

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 92 civic VX B18c &raquo;</TD></TR><TR><TD CLASS="quote">if your running a ceramic coated header, don't wrap it, mine cracked shortly after putting a header wrap in it</TD></TR></TABLE>

if the header is not evenly wrapped, this is what causes it to crack. this is because the wrapped section cools at a different rate then the section thats not wrapped.

Kalokohan

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JICEK9 &raquo;</TD></TR><TR><TD CLASS="quote">
if the header is not evenly wrapped, this is what causes it to crack. this is because the wrapped section cools at a different rate then the section thats not wrapped. </TD></TR></TABLE>
Agreed. Wrap it right and evenly with no gaps and you'll be fine.

EJ8man

you could try jet hot. It might be a bit more expensive but they seem to do a pretty good job. try http://www.jet-hot.com

p0rnstar

Exhaust wrap decreases life of a header...period. It will give more performance though...best of two evils I guess.

6 years on a wrapped header? That's surprising.

dantastic

actually, wrapping the headers is meant to keep them hot. hotter exhaust gas = higher gas velocity

DCStreetHtch

this is correct and it also keep the engine bay cooler as mentioned already!

-Bryan-

jdmsiR20

keep this thread going, i'd like to see more opinions

Mista Bone

The REAL reason I wrapped the header to start with..........don't laugh TOO HARD!!!....I wanted to make sure the relocated O2 sensor saw enough exhaust heat to work properly. I want to pass emissions without trouble.

I didn't know at the time I had a "heated" O2 sensor!!!!

I knew about keeping the underhood temps down, and keeping gas velocity up.

My header is rusty from the scrapage. But where the wrap was, the coating is a little dull. About 1/2 of the wrap has fallen of lately, just falling apart, SIX YEARS LATER!!!!!!!!!

I only expected the header to last 3-4 year anyways!

EG TYPE-R

anybody else
this is really interesting information
if putting that on is better for performance id probably do it
id like to hear others opinios

(teh)H2OUUP2

The aftermath of a "wrapped" header......all i can hope is that the polisher can restore it to life.......

pr0jectezek1el

was it pretty hard to put on exhaust wrap? also when my friend installed his exhaust wrap it started to smoke and smell like its was buring and the color of the exhaust wrap turn into a brownish color.

Buzzbomb

I'm going on 3 years with a fully wrapped ceramic coated DC header and I have experienced no problems. As far as keeping temps down in the engine bay, YES, it does a great job at that. In fact, you can touch the header with the car running and not burn your hand. And the point of the wrap (as stated above) is to keep the exiting exhaust gas from cooling down too fast. I personally did it for the heat protection in the engine bay, I would however, like to see a back to back dyno run to compare HP gains.

Also stated above, uneven wrapping, and big gaps contribute to the cracking. Of course even if it's done right, it's still an increased risk. It was fairly easy for me to wrap mine, I suggest wearing gloves though, that fiberglass is nasty stuff.

Buzzbomb

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by pr0jectezek1el &raquo;</TD></TR><TR><TD CLASS="quote">also when my friend installed his exhaust wrap it started to smoke and smell like its was buring and the color of the exhaust wrap turn into a brownish color.</TD></TR></TABLE>

Oh, and after you wrap it, put a few coats of high temp paint on it. This kinda "seals" the wrap and protects it from oil and moisture and stuff. The smoke is normal and will stop.

Buzzbomb

One more, read a thread I started a while ago, it got heated but turned out ok, there is some good info on it if you read the whole thing.

https://honda-tech.com/zerothread?id=509047

pr0jectezek1el

is it ok to just wrap the top of the headers or do i have to wrap the whole header.

thanks

Mr HYDE

i cracked the weld agaisnt teh flange on my dc jdmstyle 4-1 header ceramic coated adn had to weld it i was thinking of wraping it cuz the look is already ruined but is header wrap really worth it

dunkd

mugen header

id rather not wrap mine bc of lifespan issues. id like to keep mine considered how much they cost.

Buzzbomb

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by pr0jectezek1el &raquo;</TD></TR><TR><TD CLASS="quote">is it ok to just wrap the top of the headers or do i have to wrap the whole header.

thanks </TD></TR></TABLE>

I did mine all the way to the 02 sensor, but I'm sure if you just wanted to wrap the top half that would be fine as well. I wanted to keep the temps even throughout the header.

And if you have a real expensive header like a mugen, I'd probably not wrap it.

pr0jectezek1el

yea all i have is the used ss two piece dc header that i got off of ebay for 150 bucks