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Best aftermarket Manifold?

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Old 08-12-2018, 07:45 PM
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Default Best aftermarket Manifold?

Did a search and didn't see any recommendations. It is time to swap out my son's exhaust manifold. The notorious crack has appeared. About the only one I can find at local parts stores is the Dorman made one for $170. I have seen some on the internet, but I am always leary of the internet. I saw one stainless steel for $70 or less. Should I be worried about buying one that is supposed to be stainless steel for only $70?? What is a fair price for a decent manifold that will last 100k miles? Just curious what most of your experiences have been and if you can point me in the direction of a good deal that won't cost more than $100.
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Old 08-12-2018, 07:52 PM
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Dorman is your best bet. Anything else is cheap chinese junk that will just crack again.
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Old 08-12-2018, 08:35 PM
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I went with the dorman on both my XJs (98 and 99). The expansion bellows keeps it from cracking.
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Old 08-12-2018, 09:07 PM
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I went with the ATP. So far so good. Check your engine and transmission mounts because if they are sagging that vibration will transfer to your new manifold.
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Old 08-13-2018, 12:46 PM
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I have the Dorman and it's been good.
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Old 08-13-2018, 01:03 PM
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I went with the Dorman and the flange was not thick enough. I tacked on washers to give it the right height.
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Old 08-13-2018, 05:00 PM
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the china ebay ones crack i did mine 2 times before going with dorman i also welded the washers on it like above pic
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Old 08-15-2018, 10:26 AM
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I don,t see one for a 89 jeep renix 4.0 from doorman
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Old 08-29-2018, 10:04 AM
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Originally Posted by Cummins93 View Post

I went with the Dorman and the flange was not thick enough. I tacked on washers to give it the right height.
I just installed an ATP challenge y header last night and I have the opposite problem, the flange of the header is too thick to seal the intake properly. Not sure if I should get out the grinder, try some type of shimming or maybe sandwich the intake port areas of another gasket on
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