The Jalopy Journal
Discussion in 'Traditional Hot Rods' started by ace high, Aug 27, 2017.
Oil pressure start out at 60 - 70. Once engine is hot, pressure drops to 5 psi. WHAT GIVES .
First thing to do is check with another gauge preferably mechanical.
If electric gauge in car maybe the sending unit is going.
Oil pump has excessive wear, time for an oil change, weight of oil?
Just some thoughts, KK
The engine is wore out.
Or there may be some other problem, but we'd probably need more details about the engine, to help you figure out what it might be.
To get more help you might want to give us a hint as to what year, make and cubic inch engine you are asking about. But guessing and making up answers is fun also.
If it was a pre 54 Chev splasher, it would only have 14 pounds brand new. So ya, it makes a difference what kind of motor.
Sorry for being so vague. Engine is a 53 Chrysler 331 hemi rebuilt 5000 miles ago.
Better have a look at the bottom end I think. Lippy
Reckon the folks who did the engine might have used the old oil pump?
Definitely too low. Loose bearings or an oil leak someplace.
I would pull the oil pump and check it out. I found out the hard way that they can go from 60 pounds pressure to none in a matter of minutes. Fortunately we got mine shut off and home without hurting the motor so a new pump and it's good to go.
What kind of filter? I've seen the "pay me now, or pay me later" kind come apart inside and do that.
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