Jump to content

Exhaust insulation--OT


Joe Flanagan

Recommended Posts

I've seen a white sort of tape that serves as a heat insulator for exhaust lines under the hoods of certain cars and was wondering if any of you know what that stuff is. I don't believe it's factory-supplied but done after the fact to deal with heat and any problems it creates. It almost looks like an asbestos wrap. I'm asking because I'm looking for something similar for my daughter's daily driver.

Thanks.

Link to comment
Share on other sites

Thanks. There is an exhaust pipe that runs past the intake manifold gasket in my daughter's car. It's very close and it causes the gasket to fail--fries it apparently. The car starts to stumble on idle once that happens. I've replaced the gasket once but it was such a job I don't want to do it again, and this particular make and model was known for this.

Link to comment
Share on other sites

It is good stuff. I use it on my Plymouth. You can touch it at running temps. The most important thing that most guys don't do is during installation the wrap needs to be dipped in water and damp. When it dries it wraps tighter to the pipe.

Most people dont do this and they are not getting the full performance of the wrap.

BloodyKnuckles

Link to comment
Share on other sites

Just be aware that a wrap like this does reduce the life of an exhaust pipe, as the pipe itself will be hotter. That's why I prefer a ceramic coat, but only if you coat both the outside and the inside.

Anecdotal note: A few decades ago I was at a DTM race in England, back when the DTM cars were more advanced than F1 cars. The Mercedes factory cars had a gorgeous stainless header and exhaust system that was fully wrapped. When we talked to the mechanics, they said that they threw the entire system away after every weekend, because they had experienced failures during the second weekend when they had tried to stretch it to two races. As always, YMMV.

Marty

Link to comment
Share on other sites

Just as an update I have 32,000 miles on my wrapped headers. They may or may not be in good condition under the wrap. They still work.

Someday I plan on redoing the headers and I'll let you guys know a real world report.

BloodyKnuckles

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.

Terms of Use