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Crank rear oil seals

Posted: Thu May 17, 2018 6:00 pm
by beepbeep
Another question re my ever bigger to do list, there's two types of crank rear oil seal listed. One is the bolt on plates which is what I have and there's some neoprene ones listed also. Do these fit the original plates or are they a modification as I can't see where they would fit on my engine.....thanks in advance

Chris

Re: Crank rear oil seals

Posted: Fri May 18, 2018 6:33 am
by June J
Hi Chris,
the neoprene seals fit into the main bearing cavities/main bearing caps. I believe that not all engines are machined to accept these seals. Check by seeing if the neoprene seal can be fitted into the bearing cap before going any further.

Cheers

Ian

Re: Crank rear oil seals

Posted: Fri May 18, 2018 11:28 am
by dashtp40
Chris,
I believe Ian is correct. When I opened my overhaul gasket set while working on my 218 cubic inch engine for my WC-3 the only rear crankshaft seal was the neoprene seal. My engine didn't have the groove machined for that seal, mine had the bolt on type.
Best regards,
Steve

Re: Crank rear oil seals

Posted: Wed May 23, 2018 7:55 pm
by beepbeep
Thanks Ian, thanks Steve. My rear cap has no machining for a seal only for what I would call the crank thrust flange (if that's a term :lol: ) looks like it's bolt on! Thanks again

Chris