Does anyone wrap there exhausts?

[jimbob200521]

Was browsing around online through some random forums and had a, well, random thought. Would there be any benefit to wrapping your muffler/exhaust in exhaust insulation to help keep a little more heat out from under the hood? May be a dumb idea, but you know what they say; the only dumb question is one you don't ask

[Merk]

Good question.
My Son's 86 has wrap on exhaust

Closer view:

Straight pipe:

[Merk]

My Dad's narrow front tractor:

Closer view:

[Sam Mac]

I tried wrap on a set of headers on my race car, never again. Totally ruined them. Jet Hot or similar ceramic coatings if it were me.

[jimbob200521]

Originally Posted by Merk

Good question.
My Son's 86 has wrap on exhaust

Closer view:

Straight pipe:

Originally Posted by Merk

My Dad's narrow front tractor:

Closer view:

Thanks for the pics guys

Do y'all think it makes a difference?

Originally Posted by Sam Mac

I tried wrap on a set of headers on my race car, never again. Totally ruined them. Jet Hot or similar ceramic coatings if it were me.

What did it do to them?

[Sam Mac]

Originally Posted by jimbob200521

Thanks for the pics guys

Do y'all think it makes a difference?



What did it do to them?

Warped and rotted them to death. Just my results and on a race car, it may work OK on a tractor but I won't use it.

[dvogtvpe]

besides keeping heat out from under the hood the general idea is to keep the heat inside the pipe which speeds up the velocity of the exhaust resulting in better scavenging of the cyl and better filling of the cyl.
Jethot and others have great products. it is more expensive but much easier on parts since it won't trap moisture. you can heat coat the top of the piston, inside of the cyl head , the exhaust port to the pipe. coating the top of the piston keeps the heat out of the piston so you can run tighter clearance's with less chance of the piston swelling and scoring the bore. when I ran nitro in my puller years ago it really helped. then when I put nitrous on my snowmobile I used heat coated pistons to. in fact we've been playing around with heat coating the outside of the head to keep more heat in the head.
wrapping the exhaust pipe does affect optimum jetting so adjustments would be needed to keep the AF ratio the same

[jimbob200521]

Originally Posted by Sam Mac

Warped and rotted them to death. Just my results and on a race car, it may work OK on a tractor but I won't use it.

Originally Posted by dvogtvpe

besides keeping heat out from under the hood the general idea is to keep the heat inside the pipe which speeds up the velocity of the exhaust resulting in better scavenging of the cyl and better filling of the cyl.
Jethot and others have great products. it is more expensive but much easier on parts since it won't trap moisture. you can heat coat the top of the piston, inside of the cyl head , the exhaust port to the pipe. coating the top of the piston keeps the heat out of the piston so you can run tighter clearance's with less chance of the piston swelling and scoring the bore. when I ran nitro in my puller years ago it really helped. then when I put nitrous on my snowmobile I used heat coated pistons to. in fact we've been playing around with heat coating the outside of the head to keep more heat in the head.
wrapping the exhaust pipe does affect optimum jetting so adjustments would be needed to keep the AF ratio the same

Well I guess there goes that idea for every day use Thanks guys

[Merk]

Main reason was to keep the heat off the decals on the hood.
I think it does help like Don posted in his response.
When the 86 is shut down for the day the exhaust is plug/cap off to help keep moisture out of the exhaust. The red Cub Cadet has a rain cap on it.

[Sam Mac]

Some of the coatings used in race engines today are incredible. You name it they coat it. Guess it's nice to have $20 mil + budgets to work with. Just a FYI I used to use a place called Air Bourne coatings in East Hartford CT. They did nice work. Not even sure if they are still in business.