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Early oil pump with late pressure relief pistons

I just pulled a motor apart that had low oil pressure and had this combination. Would this contribute to a low pressure problem. Also, I have found quite a bit of metal shavings in the oil screen but all the bearings are still intact. Can I take the oil pump apart to check the internals?

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Old 07-23-2004, 06:32 PM
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well....you dont say which eng.- 2.7 with oil mod HAS to have the newer relive pistons in the right holes- is that your question??
Old 07-24-2004, 01:19 PM
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Quote:
I just pulled a motor apart that had low oil pressure
Well since the engine is apart already, this is moot...

Did you check the pressure with a mechanical gauge? or was the low pressure just indicated on the dash gauge?

My dash gauge reads low, between 0-5psi hot.. I checked with a mechanical gauge and the real oil pressure is 15psi at idle, hot engine..
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Old 07-24-2004, 01:56 PM
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Re: Early oil pump with late pressure relief pistons

Quote:
Originally posted by nein14-6
I just pulled a motor apart that had low oil pressure and had this combination. Would this contribute to a low pressure problem.
No, oil pressure will not be effected by early oil bump and late pressure relief valves.
Also, I have found quite a bit of metal shavings in the oil screen but all the bearings are still intact. Can I take the oil pump apart to check the internals?

The oil pump can and should be dissassembled for inspection. It is possible that the shavings you found are a result of poor cleaning prior to the last assembly. If this is a mag case, low oil pressure at idle is generally the main bearing bore / main bearing clush is out of tolerance.
I did see one engine case that had a small piece missing from the case at an oil passage from a previous explosion.
Very rare, but find the problem before you assemble the engine.

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Old 07-25-2004, 09:34 AM
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