exhaust/cat interchangeable between 5.2 and 4.0? - JeepForum.com

 
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post #1 of 11 Old 05-15-2013, 04:26 PM Thread Starter
NinetySevenZJay
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exhaust/cat interchangeable between 5.2 and 4.0?

i bought my 5.2 with the exhaust cut at the midpipe so i have no cat, no o2 sensors, and no muffler. im looking to buy exhaust from someone parting out their zj but all i can find are 4.0 so will this work and pass emissions? or are the cat/muffler different sizes?

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post #2 of 11 Old 05-15-2013, 06:41 PM
Maine1994ZJ
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Originally Posted by NinetySevenZJay View Post
i bought my 5.2 with the exhaust cut at the midpipe so i have no cat, no o2 sensors, and no muffler. im looking to buy exhaust from someone parting out their zj but all i can find are 4.0 so will this work and pass emissions? or are the cat/muffler different sizes?
IIRC the cat, O2, & muffler are all interchangeable. Obviously the manifolds are different. But the cat, intermediate pipe, & mufflers should be the same. The tailpipes are almost identical except are shaped differently at the bumper end, 4.0Ls have a down-turned round end and v8s have no turn-down, it's straight out under the bumper and the end is oval.

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post #3 of 11 Old 05-16-2013, 03:23 PM Thread Starter
NinetySevenZJay
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alright thanks
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post #4 of 11 Old 05-16-2013, 04:13 PM
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http://www.jeepforum.com/forum/f13/e...4-0-a-1523506/

no, the cat is different, the y pipe is different, and the cat back is a different size pipe.

'97 zj 5.2, some stuff, some other suff, and some things that even work sometimes.

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post #5 of 11 Old 05-16-2013, 04:45 PM
Maine1994ZJ
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http://www.jeepforum.com/forum/f13/e...4-0-a-1523506/

no, the cat is different, the y pipe is different, and the cat back is a different size pipe.
Sorry, My bad!!!!

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post #6 of 11 Old 05-16-2013, 06:25 PM
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Quote:
Originally Posted by Maine1994ZJ
The tailpipes are almost identical except are shaped differently at the bumper end, 4.0Ls have a down-turned round end and v8s have no turn-down, it's straight out under the bumper and the end is oval.
Actually the tailpipes on v8s are turndowns as well. I believe your thinking of the 5.9, which I think has that oval tailpipe.

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post #7 of 11 Old 05-16-2013, 07:17 PM
Maine1994ZJ
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Actually the tailpipes on v8s are turndowns as well. I believe your thinking of the 5.9, which I think has that oval tailpipe.
Well, if that's the case, then the P.O. musta put a 5.9L tailpipe on my 5.2L '93.
Now if I only had the 5.9L to transplant into mine....

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post #8 of 11 Old 05-16-2013, 07:19 PM
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Ya the 5.9s have oval chrome tip.
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post #9 of 11 Old 05-16-2013, 07:22 PM
Maine1994ZJ
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Originally Posted by BuzzZJ9er View Post
Ya the 5.9s have oval chrome tip.
Cool! Mine's oval, but it's definitely not chrome....Definitely doesn't look like that one... It must be aftermarket junk...

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post #10 of 11 Old 05-16-2013, 07:56 PM
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stock 5.2 was oval end of the pipe, 5.9 got an oval chrome tip.

'97 zj 5.2, some stuff, some other suff, and some things that even work sometimes.

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post #11 of 11 Old 05-16-2013, 07:58 PM Thread Starter
NinetySevenZJay
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Originally Posted by ratmonkey View Post
http://www.jeepforum.com/forum/f13/e...4-0-a-1523506/

no, the cat is different, the y pipe is different, and the cat back is a different size pipe.
ahh ok. the search continues
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