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Oil pressure questions

1970Custom

1970Custom

They call me Spuds
14,107
447
Middleton, ID
When I fire up the car, I have killer oil pressure. As it warms up it pretty much goes to crap and only decent oil pressure is at higher RPM.

I have a mechanical gauge, and my question is do I need to bleed the line of air or do I need to look deeper?
 
DNFXDLI

DNFXDLI

The Token Canadian
Staff member
49,083
1,089
The Great White North
You shouldn't have to bleed it.
 
DNFXDLI

DNFXDLI

The Token Canadian
Staff member
49,083
1,089
The Great White North
Heat....viscosity drops as the engine warms up.
 
DNFXDLI

DNFXDLI

The Token Canadian
Staff member
49,083
1,089
The Great White North
1970Custom

1970Custom

They call me Spuds
14,107
447
Middleton, ID
smokey said:
Could be excessive bearing clearance.
Click to expand...
Everything measured in spec when I did the bearings, old and new bearings were within thousandths of each other, no scarring or any other visible damage, old bearings had even wear, and there's no abnormal noises on cold starts to indicate an issue.
DNFXDLI said:
Heat....viscosity drops as the engine warms up.
Click to expand...

But to only have 10-15lbs while cruising...
 
DNFXDLI

DNFXDLI

The Token Canadian
Staff member
49,083
1,089
The Great White North
That is very low...did you check the pressure with another gauge?
 
DNFXDLI

DNFXDLI

The Token Canadian
Staff member
49,083
1,089
The Great White North
1970Custom said:
Two different gauges, same result. Cold start PSI is around 60-65PSI
Click to expand...

There is a slim chance it could be the pump....but normally it's clearances which start to show as the oil heats and thins
 
DNFXDLI

DNFXDLI

The Token Canadian
Staff member
49,083
1,089
The Great White North
Nice...that's a decent price as well.
 

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