Originally Posted By roadhazard
Usually a picture is worth a thousand words......

I can describe that one in three....... Has No Clue!

That may be one of the great contributors to the leak. Installing a shim on the back side of the seal thinking it's going to reduce the lip I.D. for a greater interference fit on the crank surface is misguided at best.

That's like taking a .010" under crank and using standard bearings with a .010" shim behind them thinking your going to cure the clearance problem...... AIN'T GONNA HAPPEN!

Get out your magnifying glass and tell me the numbers/letters that are molded into the seal lip area please.


Greg black seals with felpro on the side, p-91020-1 in the middle and a 6 on the other side.



"It takes a Mopar to catch a Mopar”
1971 Roadrunner FJ6 Sassy Grass 505"RB, 18 spline 4 speed, and Dana 60 with 3.54
2022 Hellcat Charger Widebody Redeye Jailbreak: Hellraisin with 8 speed auto