Correct oil pressure for 5.7 cobra

[Donzi GT250]

My OMC Cobra 5.7 is showing a oil pressure between 40 psi and 60 psi according to the gauge.
The engine is warm and the 60 psi reading is during higher rpm's.
Is it normal to have this much fluctuation and is 60 psi too high?

 

[1970 Aristocraft]

Re: Correct oil pressure for 5.7 cobra

When at low rpm's your engine should have a low oil pressure (+ or - 40 psi)... More pressure at higher rpm's. Meaning the oil pump is working faster and creating higher presures (+ or - 60 psi). I would get worried if you didn't have any pressure. Yes, it will fluctuate. high rpm means higher pressure. low rpm and you will see the pressure drop. My donzi is a 1989 Ragazza 5.7 omc cobra.

 

[Donzi GT250]

Re: Correct oil pressure for 5.7 cobra

What size prop do you have on your Ragazza?

 

[1970 Aristocraft]

Re: Correct oil pressure for 5.7 cobra

i haven't measured it yet.