Reduce Underhood Temps- Exhaust Wrap - Page 3 -
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post #31 of 31 Old 06-04-2017, 10:52 PM
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Originally Posted by BowtieNut View Post
I see that this is a little old, but in case anyone reads this in the future, I just want to make sure they make an informed descision. I've always heard that header wraps are BAD NEWS!!! They keep TOO much heat in, and the header can't handle it, and will crack. And from what I hear, the Jeep 4.0 header is already a little prone to cracking. I know, the first time I heard that I was like "whatever", but I've read plenty of articles since then that have changed my mind. In fact, most header manufacturers will VOID the warranty if there is any evidence that header wrap was used. Here's one article I managed to go back and dig up

I'm not saying there may not be benefits to it too, but to me the drawbacks are far worse. You make your own descision on your Jeep, but hopefully make an informed one.
I am going to put my .02 in on this. Have a supercharged 4.0l 1991 wrangler I replaced the stock cracked header with a borla stainless, and yes I wrapped it! Well let me tell you that it cracked all over within the first few months! Boy was I pissed! The work involved for me to re and re was enormous as the kenne belle supercharger sits on the intake manifold. I went to a ceramic coated 6-2-1 pacesetter and did not wrap it and have never looked back.

So to all those that want to wrap theri loooong and short 6-1 4.0l header that already has expansion and contraction issues, well let me just say buyer beware!

da_jeep is offline  
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