Oil pressure drop

B

bigddutchman

Junior Member
I HAVE A '37 FLATHEAD. OFFENHAUSER MANIFOLD. 4 BARREL CARB. NO OIL FILTER.
My oil PRESSURE gauge shows 50 pounds when i start cold. As i drive over the next 15 - 20 minutes the pressure SLOWLY drops to zero.
No oil is leaking, and i burn a quart every 300 or so miles.
Could it be a seal? The pump?
What can i do to pinpoint the problem? (do i have a problem?)
big d
 
Last edited:
300 miles a quart of oil, no leaks, sounds like a tired engine, if no leaks it's not a seal, 50# cold seems the pump is alright, sounds like a lot of worn bearing clearance. How many miles on the engine? Use 20-50 oil and see what it does. Walt
 
Hey Walt, I'm OK to start, but after 15-20 minutes, I'm tired and worn out also.
Somehow, I don't think 20-50 oil will help me much, ya think? :confused:
 
I dont think its uncommon, mine does the same I asked the question a while ago. Alot came back saying its more about flow rather than pressure...?
 
Might think to try changing the oil sender, or try a mechanical gauge. I can remember some one going crazy, turned out to be the sender.
Karl
 
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