flexible 4.0 header - Off-Road Forums & Discussion Groups
Jeep-Short Wheelbase All discussion of short wheelbase Jeeps: CJ, TJ, YJ and JK

 
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post #1 of (permalink) Old 02-17-2002, 02:55 PM
brendan
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flexible 4.0 header

Is there a real difference in strength between the solid 4.0 headers and the ones that have the flexible pipe at the 1+6 cyls? I am looking at both and am wondering if this was a factory redesign or an aftermarket part. I am assuming that the flexible one is less prone to cracking. Thanks, brendan

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post #2 of (permalink) Old 02-17-2002, 06:22 PM
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Re: flexible 4.0 header

The ones with the flexible tubes between 1 and 6 cylinders is a Mopar redesign. I have changed many of the older ones with the new style. I havn't changed any of the new type yet. Does this help? p.s. This is one of my favorite jobs. I can change one on a TJ in under 1 hour. The trick to re-assenbling it is to place 4 of the lower intake manifold bolts in finger tight, then snake the intake manifold over the studs. This makes starting the hard to reach bolts easy.

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post #3 of (permalink) Old 02-18-2002, 04:06 PM
brendan
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Re: flexible 4.0 header

Thanks for the info and the tip. I am looking at buying one, but they say it is a copy or clone of the mopar. something like that. Have you ever heard of a cracked flexible header? maybe you've never had to replace one because they don't crack.

how many hours do they pay you for replacing one?

Brendan

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