i just though i would post this up. i finally got around to wrapping my exhaust manifold with exhaust wrap. the results are fantastic performance wise, plus i think it looks a little more "Race car".


anyway, i used about 25 feet to wrap the megan header. the header was coated already, but my engine bay temps were astronomical after a session on the track. i thought i was going to melt through the coolant line.

after the wrap, it cooled things down tremendously!! after a full session on the track, i could open the hood and TOUCH the header with my bare hand!! i dare someone to try this with an exposed header. the results were definitive that engine bay temps were much cooler after a session on the track. i wish i had EGT and thermocouple data to show it. maybe i can get a friend to demonstrate or something.

here are the pictures:

 

looks nice! more like race car now ! lol! just wondering will it crack the exhaust mani with so much heat in there?

 

Nice, where did you pick up the wrap btw? At your local auto store?

Was thinking of doing this to my headers.

 

Most local auto stores don't sell header wrap but you may get lucky

We have it available in the brown color shown or in black.

http://www.rallysportdirect.com/shop...ap-p-2576.html

 

i got the wrap from the ford racing shop here. but basically any "performance parts" place should have it. buying it online is much cheaper, but they had it in stock so i just picked it up. the ties are inconel safety wire wrapped around twice at each starting and ending point. i used a safety wire pliers to make sure the safety wire held tight. i soaked the wrap in water before wrapping it so that it would be nice and tight when it dried out.

 

FYI, the black stuff in the wrap burns off almost immediately if driven hard. don't waste your money if it costs more for the black. it will look just like the brown in a short while.

 

i heat wrapped mine and the manifold cracked

 

What manifold did you have?

BTW cracking the manifold should be a relation of how fast the metal cools, i would have thought wrapping the header would insulate it from the outside giving it slower cool down times...

 

Is that coated and wrapped? Looks like the header has some sort of coating too. Maybe the angle.

 

Megan... What i think happened was that when i had it wrapped, the wrap would get soaked when it rained and then with the heat it caused a lot of stress on the manifold when it got hot....

 

Makes sense to me, guess i'll need to get a heat shield made

 

i am not worried about the wrap causing it to crack. from what i've read they all crack regardless, and it might be more due to the thickness of the manifold being to thin. also, the aftermarket O2 housing not using the factory support tab. thus the manifold just holds everything up by itself.

 

Keep an eye on the manifold. I've heard stories that it induces rust.

Charlie

 

The manifold is coated and it is stainless steel so it should not rust

 

Keep in mind that stainless steels have higher resistance to oxidation (rust) and corrosion but are not immune to it.