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Old 01-04-2014, 11:57 AM   #1
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Oil Pan Gasket

I'm replacing the RMS and oil pan gasket this weekend. I've done some research and heard a few guys have had problems with the fel pro gasket breaking, even when installed and torqued correctly.

The question is, should I go with the fel pro molded rubber, the 4 piece cork, or just use "The Right Stuff" to create a new gasket?


Thanks!

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Old 01-05-2014, 02:38 AM   #2
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After having dealt with 4 pan gasket installs in a year. I liked the one piece better than the 5ver. Gut it took me some time to do it the last time. The problem you will run into is the rubber cutting at the back of the engine. There is a grove that the gasket has to fit into to get the correct seal.

The last time I did it actually worked out ok. I cleaned the bottom of the block as spotless as possible with a scraper and brake parts cleaner. I then put a bead of black silicone all the way around where the gasket fits. Next I put the gasket in place with a bunch of pan bolts paying real close attention to the rear of the engine and the fit up into the groove. That to me has proven to be the achilles heal of the pan gasket.

Go do something else for a couple of hours until the rtv sets up enough to hold the gasket in place. Then bolt up the pan.

On one of my attempts I did try high tack gasket sealant. It held the gasket in place, but I still had leaks.

At least now I am loosing more oil to blow by than to a pan gasket leak.

Good luck

PS, My next move was to use the right stuff. Others swear by it. I don't know.

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Old 01-06-2014, 08:39 PM   #3
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So I screwed something up in this process and I'm still puking oil out of the back of the engine.

Is there a way I can determine if the mistake was in the oil pan or in the rear main? I didn't see the above response until after I had done the repair so I did everything as per the manual (fel pro gasket with just a couple small lines of RTV at the corners.

If I screwed up the oil pan gasket, would it be a severe leak or just a minor drip?

The top half of the rear main was not real easy to slide back in, but I saw it in the channel on the other side and I didn't see any pieces get sheered off.

Any ideas on how I can figure out what I did wrong? I don't mind pulling the pan again and trying that again, but if I need to try the rear main again, I'd like to know while I have the pan off.

Thanks guys!
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Old 01-09-2014, 06:10 AM   #4
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I went through 4 oil pan gaskets before I got mine sealed up. Still not to sure about it. I might be wrong, but I don't think a rear main will leak as bad as a oil pan gasket.
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Old 01-09-2014, 05:20 PM   #5
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You probably messed up the gasket ....RTV is your friend... Its a lot easier if you can get someone to help you..
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Old 01-09-2014, 05:51 PM   #6
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Thanks for the advice guys. Good to know that I'm not alone with this problem.

I replaced it again (with someone helping) and used a decent amount of RTV. There's still oil on the bell housing and dripping from the rear end of the pan but I'm in the process of trying to trace it...not 100% certain that it's not coming from somewhere else.

The PO had not done much if any maintenance and there is oil EVERYWHERE. Engine, transmission, skid plates, entire undercarriage is covered in a thick layer of oil and dirt. I'm hesitant to pressure wash it in case I have a bad gasket somewhere (actually think I may have a blown head gasket that's only leaking oil) so I'm just taking my time with a putty knife, some simple green and a hand brush. I'm also worried that the oil and grime are the only things holding the Jeep together....but I guess that would just mean more time in the garage drinking beer.
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Old 01-10-2014, 01:30 AM   #7
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When you put in the upper RMS, make sure you put it in facing the correct way. If you replace it and the groove in the seal is facing the wrong way, you will spew oil everywhere. I have made that mistake before.
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Old 01-10-2014, 10:18 AM   #8
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Three thoughts:

Could it just be the residual oil in the bell housing finally leaking out?

Could it be the front transmission seal? (your profile is incomplete - there's no mention of MT or AT)

Could it be a bad valve cover gasket leaking down the back of the engine?
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Old 01-10-2014, 10:44 AM   #9
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Quote:
Originally Posted by LuckySun View Post
So I screwed something up in this process and I'm still puking oil out of the back of the engine.

Is there a way I can determine if the mistake was in the oil pan or in the rear main? I didn't see the above response until after I had done the repair so I did everything as per the manual (fel pro gasket with just a couple small lines of RTV at the corners.

Thanks guys!
First step is to clean the engine and drive, look for the leak. If you have a problem finding it, make sure the engine is clean and get yourself some dye that you can add to the oil. Follow the directions, you'll need a black light.
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Old 01-11-2014, 02:42 PM   #10
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I'm fairly certain it's not the valve cover gasket...just replaced that a couple months ago and everything above the plugs is dry.

With the amount and color of the oil, fairly certain it's not just residual from the bell housing either.

Btw, it's a manual.

I've spent all day so far cleaning up the motor and as soon as it's clean enough, I'll try to diagnose again.

I've heard about the dye but I figure if I can get the engine clean enough, I can just trace the oil back to the source. The only problem with any of that is that it only seems to leak while driving. I can idle for 20-30 min with no leak but drive it for 30 seconds and the leak starts.
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Old 01-13-2014, 02:24 AM   #11
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Hey I have been having the same problem with mine, just redid the RMS, oil pan gasket, oil pump, and valve cover gasket. At idle no leak, with higher RPM it leaks out at a constant drip? Have you had any luck with since your last post? I'm thinking about re doing the RMS and oil pan gasket? I should add it did not leak like this previous to the changes, it was in need of a new oil pump.

Thanks

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