Rear Main Seal Install

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Mike69cuda said:
Thanks, but already have it in. I will fire it up tomorrow & cross my fingers.
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Good luck . I know I Hate leaks have changed the rear seal twice what pain . sure hope you have no leaks
 
Yee haw!!! Got the car back together and drove it today. No oil leaks!

The oil seal that came in the car leaked. It was similar to the one I used with the metal rod in it. It had been trimmed. The first one I put in I trimmed. It leaked a lot. Possibly because of a hack job on my part. The last seal I put in I did not trim. It extended approximately 0.80 inches above the seal surface (about 0.40 each half).

I am not generally a fan of data sets with one or two results, but for me the using the seal as is seems to have worked out.
 
Mike69cuda said:
Yee haw!!! Got the car back together and drove it today. No oil leaks!

The oil seal that came in the car leaked. It was similar to the one I used with the metal rod in it. It had been trimmed. The first one I put in I trimmed. It leaked a lot. Possibly because of a hack job on my part. The last seal I put in I did not trim. It extended approximately 0.80 inches above the seal surface (about 0.40 each half).

I am not generally a fan of data sets with one or two results, but for me the using the seal as is seems to have worked out.
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AWESOME!!! Oil leaks SUCK. Glad it worked out.
 
i would give it at least 2 weeks before i would jump with joy . but hopefully it's fixed .oil leaks suck i am fighting one myself .
 
Mike69 other than the length of the seal, how much trouble was it to extract and replace the seal half in the block? I have a 71 340 thats leaking. Ive only done the replacement on an engine stand during a rebuild. Not on my back. Larry
 
LJ67barracuda340 said:
Mike69 other than the length of the seal, how much trouble was it to extract and replace the seal half in the block? I have a 71 340 thats leaking. Ive only done the replacement on an engine stand during a rebuild. Not on my back. Larry
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It wasn’t too bad the second time when I knew what I was doing. Pulling the oil pan is 90% of the work. The hardest part was was raising the engine so the pan would clear the k member. Getting the motor mounts loose is a pain. I figured out you only needed to raise one side of the engine, but mine did not have a windage tray.

Disconnect the idler arm, pitman arm and one tie rod end and move the steering linkage out of the way. Pan comes off easy then.

Took off the rear main cap only. Didn’t have to loosen the others. Pushed the top half of the seal out with a toothbrush with the head cut off. Came out easy. I bought one of those seal extraction tools but couldn’t use it because the seals have a big metal rod in the center.

I bought the red viton seal at Oreilly. Yours will be a different one for a 340. Greased up the new one & it went back in easy.

I used permatex high tack sealer to hold the side gaskets on the oil pan. Put some rtv where the gaskets meet & slapped it back together.

If you were confident & humping, you could probably do it in a half day. Took me longer.

So far so good.
 
I’ve got a small leak which is giving me the ***** But it’s small the size of a 10c piece and I will Need to pull the engine due to having the kevko pan which slides in a unique way and the stud girdle as well . Headers I’ve have mastered to fit and remove once you have done it a few times. I have the junk felpro black seal with the wings . Will order that same seal as mentioned above.Mike69 do you have a part number for that seal ? It’s for 360 LA correct ?. Cheers
 
67 gt said:
I’ve got a small leak which is giving me the ***** But it’s small the size of a 10c piece and I will Need to pull the engine due to having the kevko pan which slides in a unique way and the stud girdle as well . Headers I’ve have mastered to fit and remove once you have done it a few times. I have the junk felpro black seal with the wings . Will order that same seal as mentioned above.Mike69 do you have a part number for that seal ? It’s for 360 LA correct ?. Cheers
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Ive never had any trouble with the junk felpro black seal???? this ones not my car or build..
 
Have had a few people with issues running these seals was told to run the magnum type to fix the leak issues . Got on to Mopar performance parts for the superformace double lip seal for the 360 and they don’t have any in stock and with this COVID going on they don’t know when they will be back in stock . They have them for the 318-340 engines.
 
67 gt said:
I’ve got a small leak which is giving me the ***** But it’s small the size of a 10c piece and I will Need to pull the engine due to having the kevko pan which slides in a unique way and the stud girdle as well . Headers I’ve have mastered to fit and remove once you have done it a few times. I have the junk felpro black seal with the wings . Will order that same seal as mentioned above.Mike69 do you have a part number for that seal ? It’s for 360 LA correct ?. Cheers
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Felpro BS 40651 is the red viton seal, that was for a 74 360. The black seal was about $10, the red one was $25.

I didn’t think the 360s had the wings on the seals?
 
Thanks Mike they don’t but the seal which came with the Gasket set did. The seal you used must be made of a different material. These black ones are a hit and miss.
 
Mike69cuda said:
Felpro BS 40651 is the red viton seal, that was for a 74 360. The black seal was about $10, the red one was $25.

I didn’t think the 360s had the wings on the seals?[/QUOTE. Thank you just ordered one. The vitron seal is a better quality seal than the other type I think they are made out of neoprene .
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