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Old 10-19-2025, 11:50 AM
78w72 78w72 is offline
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Join Date: Nov 2007
Location: iowa
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Quote:
Originally Posted by grivera View Post
When you remove the rear main cap, make sure you anaerobic sealer between the cap and block, RMS to edge of the cap where it meets the pan gasket.

https://shop.advanceautoparts.com/p/...SABEgL3AvD_BwE
If he just replaces the pan seal, there is no need to remove the main cap... unless of course he or someone can confirm without a doubt its the rms. I'm suggesting trying a new pan gasket with cork rear seal before sending out the motor again & paying lots of $$ when its possible $50 gaskets & a couple hours of work in the garage may fix the leak.

Regarding the serrations on stock cranks, Ive pulled or bought already pulled stock cranks, easily 15-20 over recent years, all from higher mileage engine of 60-80k+ miles and the serrations were not very pronounced or sharp, on my 50k mile original 400 W72 crank it was almost like it had been polished before but was just from the stock rope seal & mileage. Always good to check and knock down if needed, but my 400 with a 2 piece BOP seal is doing very good after 15+ years. Just my experience.

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