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Old 06-17-2010, 08:15 PM   #1
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4cyl exhaust manifold replacement

I did a quick serach but did not see anything. Is there a write up on replacing the exhaust manifold? I am pulling a cracked stocker and bolting up a stock replacement.

Are there any hidden tricks or lurking potential problems?

Does the intake need to come off?

Thanks

Craig

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'91 stock YJ, red, 4cyl, 5 spd. I wonder how long that configuration can last???
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Old 06-18-2010, 11:39 AM   #2
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Bueller? Bueller? Anyone?

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Old 06-18-2010, 10:57 PM   #3
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The intake will also have to come off. i need to do the same thing but leak is still very minor i will wait till worse
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Old 06-18-2010, 11:15 PM   #4
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Thanks tazzilla....do you have access to the procedure...any strange things to look out for?

Thanks for the reply.
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Old 06-19-2010, 07:15 AM   #5
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I would leave as much attached to intake manifold as I could and just move it to the side in order to get exhaust manifold out also night before i would soak exhaust bolts and egr tube in pb blaster or something that will penetrate rust to free up any rusted bolts very common with exhaust parts.
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Old 06-19-2010, 09:07 AM   #6
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Good deal...so basically typical job for the most part. I wish I could wait longer on mine but it is getting to be tank-like.

Thanks again. I'll let you know if I encounter anything 'funky'.
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Old 06-20-2010, 04:18 PM   #7
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Quote:
Originally Posted by Rover View Post
Good deal...so basically typical job for the most part. I wish I could wait longer on mine but it is getting to be tank-like.

Thanks again. I'll let you know if I encounter anything 'funky'.

"tank-like" For the win! Lol.
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Old 06-20-2010, 08:03 PM   #8
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I calls 'em like I sees 'em....lol


Thanks
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Old 06-20-2010, 11:22 PM   #9
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you're better off slapping on a header. I just did it on my I6. You have to remove the intake, powersteering pump, and all that good stuff. As soon as i find out why I have such a rough idle I will post pics
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Old 06-21-2010, 09:35 AM   #10
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ferrachi...is your header a direct bolt on replacement...no need to change any of the exhaust?

Did you see or feel any noticeable gains in torque or power?

Thanks for the input.
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Old 06-21-2010, 01:16 PM   #11
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I have not find a header for the 4cyl if you find one let me know where.
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Old 06-21-2010, 01:53 PM   #12
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I have not find a header for the 4cyl if you find one let me know where.
I have seen them on ebay ,if I am not mistaken either 4wd hardware has one or maybe quadratec ?
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Old 06-21-2010, 02:06 PM   #13
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I have not searched for a 4cyl header...I'll look and see.
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Old 06-21-2010, 02:22 PM   #14
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when i did mine, i had to grind a little on the skirts. they wouldnt let the intake manifold sit in there all the way. once i figured that out, it was relatively easy
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Old 06-22-2010, 08:23 AM   #15
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ebay have header for 4 cyclinder
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Old 06-22-2010, 08:32 AM   #16
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A quick search (jeep header 2.5) yields 2 hits. One is 225 (pacesetter) and the other 389 (Banks). A bit pricey.
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Old 06-22-2010, 09:33 AM   #17
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dont waste your money. i think i paid a little over a hundred for my manifold. you're not going to see appreciable gains from the header on the 4 banger.
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Old 06-22-2010, 09:51 AM   #18
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I agree...I am swapping out my broken manifold with a stock replacement.

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