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Old 11-11-2007, 10:17 PM
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Does anyone run a header on these YJ's? I've heard the exhaust manifold can crack pretty easy with some water...anyone put on a header? Thinkin about buying one but don't know about how it will be to put on. I was looking and it seems like it is lined right up with the intake, but under it. Nice tight spots to get to bolts? Do you have to pull the intake? Has anyone done any other horsepower modifications to the 4.0's? Thanks guys
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Old 11-14-2007, 10:19 PM   #2
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i put on a rugged ridge, stainless header..so far so good..

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Old 11-15-2007, 10:23 PM   #3
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Mine is a 4.2 and had to remove the intake to remove the manifold but my new Borla header allows me to remove one at a time if needed.

The bottom bolts aren't too bad to reach as long as you have small hands or a good socket wrench.
My Jeep is like a bum, always begging for change
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Old 11-16-2007, 01:44 AM   #4
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I too have a 4.2 and I just picked up a split header for mine from craigslist for $40
I cant wait to install it.
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