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Old 10-15-2010, 11:16 AM
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360 oil pressure problems

hey i've got a friend that has a 360 mopar that has an oil pressure problem. when he first starts it the pressure is fine and as it warms up to normal temp the oil pressure gradually drops to almost nothing.
anybody know what the problem could be.
the gauge seems to be fine.
any ideas?
thanks

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Old 10-15-2010, 05:05 PM
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How many miles are on it? If it has high miles it means it`s rebuild time. Cold oil is thick so the oil pressure stays up. Hot oil is thin and the oil pressure drops. High miles plus loose bearing tolerances equals low oil pressure. If he wants to run it all he can before it goes I`d run the heaviest oil I could find plus STP oil treatment. But if he`s looking to save the engine to make the rebuild cheaper as well as easier I`d yank it before it self destructs.
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Old 10-15-2010, 05:12 PM
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it was rebuilt less than 1000kms ago. i dont think her replaced any bearings but we are thinking about tearing it down again. just werent sure what to look for when we do so.
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Old 10-15-2010, 05:16 PM
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Quote:
Originally Posted by 70' c10
it was rebuilt less than 1000kms ago. i dont think her replaced any bearings but we are thinking about tearing it down again. just werent sure what to look for when we do so.
It wasen't rebuilt if the bearing wasen't changed JMO. Thats a big part in a re-build. It probably as already stated in fact does need a re-build but i mean a complete re-build. IMHO
No wonder the oil pressure drops like it does.

Cole
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Old 10-15-2010, 05:21 PM
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ya i guess so. rip it out and start fresh.
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Old 10-15-2010, 05:22 PM
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Originally Posted by 70' c10
ya i guess so. rip it out and start fresh.
That's what i would do . By the way what's the 360 in ?



Cole
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Old 10-15-2010, 08:05 PM
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ya he's got a 1974 roadrunner
its a project car he has had for a couple of years
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Old 10-15-2010, 08:13 PM
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If it's an electric oil gauge with a sensor, a common sensor problem is exactly as you describe.....pressure drops as car is driven.

And as mentioned above, it will drop as the oil heats up and thins out, which is all the more noticeable the larger the bearing clearances are.
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