Cracked Headers? Reccomendations for a new set. -
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post #1 of 3 Old 03-12-2012, 09:27 PM Thread Starter
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1991 XJ Cherokee 
Join Date: Sep 2011
Location: Hillsborough
Posts: 80
Cracked Headers? Reccomendations for a new set.

So I'm pretty sure my headers are cracked, i realize that this is a common problem for the 4.0. mine are still factory original from 91 and have been welded once. my problem is i cant pass smog for the life of me. you name it, I've replaced it and/or tested it. the only things that haven't been replaced are the headers and fuel injectors.

long story short, what i want to know is what is the best way to check for a leak/cracks? I'm 80% sure they're cracked but i want to know for sure before i order another set.

also, I've been looking around for a replacement. i dont want to spend any more than $250. my top two right now are these.

any help/incite is much appreciated.


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post #2 of 3 Old 03-13-2012, 01:11 AM
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1990 XJ Cherokee 
Join Date: Jan 2012
Location: somewhere in the dust
Posts: 789
You could buy the updated stock replacement..Has flex pipes & gussets to prevent cracking..
I bought one for my 88 and it didn't fit, so I have a brand new one sitting in my garage if you want it for cheap...never had heat through it. 90 and its yours with a new gasket.
DezertXj88 is offline  
post #3 of 3 Old 03-13-2012, 04:27 PM Thread Starter
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1991 XJ Cherokee 
Join Date: Sep 2011
Location: Hillsborough
Posts: 80
i was thinking about a stock replacement at first (theres a cheap one on amazon) but decided to jump on the opportunity to upgrade.
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