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Old 06-11-2014, 02:52 PM   #1
jetmek
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Default 37 engine with later oilpump?

Im working on a 37 engine my thought was (cuz its on the shelf) to install a later 80lb (41a p/n) oilpump and relief spring in the valve chamber. the green book indicates its a superceded, direct replacement for the 50lb pump. some are insisting that it will lead to a rearmain leak due to the slinger type crank. anyone out there been there dun that or offer an opinion?...al
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Old 01-06-2018, 04:17 AM   #2
33rds
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Default Re: 37 engine with later oilpump?

I have the same question?
Or maybe a 8ba pump will work, with out any leaks in the oil slinger?
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Old 01-06-2018, 08:22 AM   #3
SofaKing
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Default Re: 37 engine with later oilpump?

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I am not inclined to agree that the rear seal will somehow leak more because the the cold oil press will be higher. The seal works of the principles of centrifugal force and bending the gas path while the oil droplets wont make the turns through the slinger labyrinth. I mentioned cold oil specifically because my 36 engine puts out about 50 lbs cold but once warmed drops to about 15 psi at idle because it lacks the capacity to do more. I would expect similar results if all you are doing is changing the relief spring.
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