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Old 07-18-2012, 11:13 AM   #26
looking for bionics
Ghost_Mutant's Avatar
Joined: Aug 2009
Location: border of granite & flats
Oddometer: 715
oil pump

The newer oil pumps have shaft seals internally. Those help prevent frame tank drain back when the engine is off.

But I think the bigger deal is the newer pump drive gear set. They run the pump a little bit faster for a given RPM.

You can run the new pump drive gears on the old pumps if you don't think you have a drain back problem.

I found the newer pump parts on ebay for my engine rebuilds.
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