2018 2PC Rear Main Seals
Thread Starter
Melting Slicks
Joined: Jun 2016
Posts: 2,979
Likes: 332
From: Woodinville WA
2018 2PC Rear Main Seals
I've got my engine out of the car and on a stand now, so it's DEFINITELY time to replace the RMS of my 79 L82; are there any good products that will help ensure that the stupid thing never leaks again or lasts as long as possible?
Any interesting new low friction materials I should be aware of?
I'm completely clueless about this subject right now other than my block's got a 2PC RMS and I need to replace it...
Adam
Any interesting new low friction materials I should be aware of?
I'm completely clueless about this subject right now other than my block's got a 2PC RMS and I need to replace it...
Adam
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Burning Brakes
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Thread Starter
Melting Slicks
Joined: Jun 2016
Posts: 2,979
Likes: 332
From: Woodinville WA
Ok guys a few follow-on items:
Big question: Felpro advertises the "offset" lip SBC RMS as simply an "Improved Design"; based upon the feedback on here, I'm unclear whether the offset lip is appropriate for a crank with a low amount of wear (my engine only has 14.6k miles on it and honestly it's in fantastic shape internally- bores, even the tappets have very little wear) or just for cranks with significant wear that cause sealing issues.
Adam
- My engine has the stock RMS on it (L82) -it's never been changed
- I'm not actually sure that it's leaking, I was just assuming that it was given where the oil seemed to be dripping from. I can start to confirm later this week or next weekend after I pull the oil pan off of the motor. (Pretty busy this week.)
- Even if it's not leaking, the car is almost 40 years old and my assumption is that while I have the engine out I should replace this thing now to avoid headaches later. -Anyone disagree?
Big question: Felpro advertises the "offset" lip SBC RMS as simply an "Improved Design"; based upon the feedback on here, I'm unclear whether the offset lip is appropriate for a crank with a low amount of wear (my engine only has 14.6k miles on it and honestly it's in fantastic shape internally- bores, even the tappets have very little wear) or just for cranks with significant wear that cause sealing issues.
Adam
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From: Was New Orleans but swam to Baton Rouge LA
Cruise-In IX Veteran
If your crank doesn’t have a groove worn in it from the original, then you should use a regular seal. The offset is only for grooves worn in the cranks original seal position.
Melting Slicks
Joined: Jul 2006
Posts: 2,291
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From: Salmon Arm, BC
I agree with SIGFORTY , The Felpro 2912 is a better quality seal than the standard one. Considering what's involved in changing one out, the extra $15 you spend on the seal will be worth it in my opinion. Put it in as GM designed it to be put in, with a very small dab of sealant on the ends of the seal, and also at the ends of the main cap where it registers in the block.....the last 1/2"......very sparingly in the corners.