Exhaust/Intake Manifold Washers - JeepForum.com
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post #1 of 3 Old 04-04-2017, 08:34 AM Thread Starter
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2002 TJ Wrangler 
Join Date: Mar 2014
Location: Annapolis
Posts: 12
Exhaust/Intake Manifold Washers

I've been having some problems with a vacuum leak on my '02 recently(I shoved a sock in the intake and it kept running). i did a gasket swap a few weeks ago when i was tightening up the bolts that connect to my exhaust. I assume it was just a poor gasket or the manifold bolts didn't torque right when i did that. either way, I'm doing it again and this time I removed the whole fender so its easier to get at the exhaust/intake bolts and doing it with better parts.

One of the things I ordered were new header bolts, but they did not come with the washers that are on the existing bolts. And unfortunately, I somehow lost one of the washers I took off. I have seen a couple people talk about belleville washers. But I also found these from Omix-ADA that look exactly like with I took off. However, all the websites say that even though they work on other 4.0L TJs, they do not work on my '02, even though they look EXACTLY like them. Am i taking crazy pills? or is there a different washer that i need to buy.

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post #2 of 3 Old 04-04-2017, 12:48 PM
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Make sure you installing the studs in the right place... They are in the very front hole and the very back hole.

You can use regular washer on the stud front one... Just put a locking washer on over it so the nut dont back off.

And I have a box full of those washers and could not tell you want year or engine size... They all the same.. 2.5 and 4.0
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post #3 of 3 Old 04-05-2017, 06:09 PM
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1998 TJ Wrangler 
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Something else you should look at before doing all that work again is, exhaust manifold/header and intake manifold fasteners should be re-torqued after the initial warm up and cool down cycle. It doesn't hurt to do this re torque procedure until they stay at torque specs after warm up cool down cycle. You'd be surprised how many manifold leaks can be solved doing this.

'98 Chili Pepper 2.5, AX5, 33x12.5x15, 5.13, D30 Aussie, Super 35
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bolt , exhaust , intake , manifold , washer

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