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C3 Oil pres question...

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jolinari:
I know for a fact the oil pres varies with speed and also the temperature of the air...according to my owner's manual, oil pres should be between 30-70 when travelling at 40-50 MPH and should be lower if you are travelling at higher speed

Can someone tell me please about the behaviour of the oil pres when increasing or decreasing the accelerator(for instance can you see the needle dropping when increasing speed or the other way around?)or when you are in neutral is it supposed to go down all the way?

I am just trying to determine whether my gauge is operating properly

thanks for your feedback

I am just bit concerned as i was driving to wollongong the temperature was soaring and on the way back it was heaps cooler and the needle was kind of really inconsistent and i was bit puzzled!

Chromie:
Hi jolinari :25
Usually you have maximum oil pressure once you get up to 1200 rpm or more
Engine oil pressure is controlled by RPM and oil temperature, outside air temperature has very little to do with the oil pressure (unless you live where it gets below zero).;27
Depending on what type of oil pump you have will depend upon what type of oil pressure you will get;46
An OEM type oil pump will give you from 15-20lbs at idle and up to 50lbs under throttle;35
An aftermarket oil pump especially a high pressure/high volumn oil pump will give you about 30-50lbs at idle and a constant 70 lib under throttle:luv
Hope this helps
Note a fluxuating oil pressure is the result of low engine oil level, or oil pump pick up loose/missing or a faulty oil pump pressure by-pass/relief valve;53

Chromie:
To test a oil pressure gauge you can do one of two things;46
1/ Put correct oil pressure gauge into the engine block and see what it reads and compare it to your oil pressure gauge in the dash
2/ If you have you oil pressure gauge out of the vehicle put air pressure to it via a pressure regulator and a correct pressure gauge and compare the readings of your Corvette gauge and the correct reading pressure gauge.
NOTE DO NOT PUT MORE THAT 70lbs INTO THE GAUGE AS IT WILL DAMAGE THE GAUGE.;38

MADLT1:
hey chromie do you sell any oil pressure gauges as mine is faulty:23

Chromie:

--- Quote ---Originally posted by MADLT1
hey chromie do you sell any oil pressure gauges as mine is faulty:23
--- End quote ---


Hi MADLT1;42
I do not carry them in stock as they rarely require replacement;27
I take it that yours is seized (assuming that yours is pre 1973)
The 1973 and later were electric and so far have never been a problem.;35
We often have one's that are seized due to lack of use and so far we have repaired each one.:}
What is the problem with yours;38
If you require one I can get it in
Parts usually do not take any longer that 10 working days to get in.;29
If you require is quicker I can get the part in 3 working days or 5 working days but the freight charges are somewhat expensive.;37

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