I've been wanting to do this for a long time, and finally did. I wrapped my entire exhaust, from the heads to the tip:
I didn't want the wrap to absorb moisture oil, etc.. so I wrapped the wrap I got some "HIGH Tempurature" tape at Home Depot. It turns out it's just Aluminum tape, like I already have, but wider, and 3X the price. It's rated for up to 260 Degrees F. I used "Tall Boy" cans in a couple places (Like where the shifter touches sometimes).
I don't have a picture of the headers.
It seems a little quieter, which is really good in this car!
I'll update this after a while.
I didn't want the wrap to absorb moisture oil, etc.. so I wrapped the wrap I got some "HIGH Tempurature" tape at Home Depot. It turns out it's just Aluminum tape, like I already have, but wider, and 3X the price. It's rated for up to 260 Degrees F.
250F is not very hot for an exhaust system but maybe the wrap will help insulate it so the aluminum tape will not fall off as the glue heats up. Watch your rear view mirror on hot days when driving fast/up hill. This should be interesting . . . Aluminum paint is supposed to help preserve the muffler and pipes . . . will check mine in the middle of March when I have the heated garage again for a week WOO WOO.
Kudos for the initiative, but the tape will fall off of the CAt converter first as that area will get over 260?F easily. The rest of the exhaust will be fine 'cept maybe near the header. And I wouldn't wrap the header itself, it will expedite the header rot. You could use that extra under hood heat for a WAI anyways.
I'll let you all know when it rots out, and I just make another, if I still have the car by then. I don't have a catalytic converter, but still pass emmissions for a 1.8L (even though it's now a 2.5). What looks like a cat is a Flowmaster muffler, which is already heat insulated.
I also have a ram air setup, which gives me better mpg than WAI, since I have an engine management system that I run lean. I just raced autocross, and the tape held up. I wrapped it around in a way that I think that, if it were to burn off the stickiness, it would still hold the shape.
If the wrap works and gives you the results you wanted...then you should try "coatings" on your next try. Swain Industries does some great ceramic coatings as do "some" speed shops.
I am surprised more here haven't been a bit inventive and tried coating different things.
2006 Jeep Liberty CRD...Founder of L.O.S.T.
OME 2.25" Lift w/ Toyo Open Country HTs 235/75/16s
ASFIR Alum Eng/Tranny/Transfercase/Fuel Skids
2002 Air Box Mod...Air Tabs (5) on Roof...(3)each behind rear windows
Partial Grill Block with Custom Air Scoop and 3" Open Catback Exhaust
Lambretta UNO150cc 4 Stroke Scooter
I saw a hot rod magazine article specifically talking about header wrap causing failure of exhaust pipes. They had two same engines with the same headers. One engine got the exhaust wrap. After a short period of time the header with wrap blew a huge hole at one of the bend points. They replaced it with a new header, THREE more times and it repeatedly blew out the same point of the pipe. I've always remembered this and even though I like the idea of header wrap, I caution people from using it on a daily driver car.