Same thing with my old 2.5The 2.5 is known for popping that front stud off flush with the head. It needs to be there.
Excellent info - thanks guys. Adding to the list of things to do this weekend...
Anyone have the sizes for the spacer and nuts for bolt #1 shown in the FSM diagram above?
Excellent info - thanks guys. Adding to the list of things to do this weekend...
The areas where the exhaust and intake manifolds share a bolt requires a heavy washer that is about 1" diameter and 3/16" thick not a spacer.
https://www.quadratec.com/p/omix-ad...WPSosufScJdEEQda6C4DqhTk7i-x7H9waAmQvEALw_wcB
It's #10 in your diagram. It's more of a sleeve than a "spacer". It might surprise you to see what it's made of. Looks like nylon or silicone and I can't imagine it lasting any length of time. It's purpose is to center the exhaust stud when you slide the manifold on. I recently replaced my exhaust manifold and I made my own out of brass from something suitably sized in my junk drawer. It's profile is such that it doesn't protrude above the thickness of the manifold flange when you install the washer and nut. I replaced all my hardware with new from Wermopar.com.
One thing to keep in mind if any of you are replacing your 2.5 exhaust manifold - Mopar is shipping Chinese manifolds under the old part #, so you might as well save some money and buy a Dorman. I returned the first one to Wermopar and ordered one from RockAuto who assured me that their picture on the their website was accurate (OEM). But upon opening the box, it was the same Chinese version that Wermopar sent. At this point, I just gave up and used it. I could have bought the same manifold for 1/2 the money locally if I had known.
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I tried the Dorman fold, 2 to be exact and the castings are incorrect where the intake and exhaust share the same bolt. The castings were to thick and the washer would not sit properly on the intake manifold, it would not tighten the intake manifold properly. I eventually opted for an OEM pattern tubular header.
Thanks. You guys are the best. Got it repaired, car doesn't idle at 2500 or sound like a lawnmower anymore.
Sorry, my mistake. Looks like I’m talking about the hardware for #7 (very front of the manifold). Is that supposed to be a stud? And what sizes are the spacers and nuts shown?
The front and rear fasteners should be studs and the remainder are bolts.Hey @lunchbox3 , I think I'm asking the same question over here. Can you let me know what you figured out?
The front and rear fasteners should be studs and the remainder are bolts.
I have a 98 TJ i am replacing my exhaust manifold gasket. The manifold does not have the front or rear stub just as you are describing. In addition the 3/8 bolt will not fit in these holes either. Is it possible that these front and rear studs are an M8x1.25 Stud?