20 PSI Oil Pressure at idle normal ??

[mattb1974]

Is 20 PSI Oil pressure normal at idle on a 1998 VP 5.0 GI?

Engine completely warmed up on water 50 PSI when rpms are up. 20 psi when at idle. 6 hours of running, full throttle, part throttle cruise and idle along. Engine ran great !!

The hottest the engine got was 150 degrees.

Air temp today was 85-90 F all day

Cold start the Oil Pressure is 40 psi idling.

Oil was new at winterization last fall. 30 weight dino. Still looks new.

Maybe I am just a little paranoid?

 

[zbnutcase]

Re: 20 PSI Oil Pressure at idle normal ??

Your paranoid. As the small block Chev only requires 10psi per 1000 rpms to live a healthy life, your fine!

 

[mattb1974]

Re: 20 PSI Oil Pressure at idle normal ??

Thanks 'nutcase, you set my mind at ease. I am used to seeing my 2004 GMC truck 5.3 liter with 40psi at idle. Guess boats are a little different.

 

[Lrider]

Re: 20 PSI Oil Pressure at idle normal ??

My 2 cents

I know nothing about this stuff

 

[Bondo]

Re: 20 PSI Oil Pressure at idle normal ??

Ayuh,.. Sounds completely Normal to me...

 

[cr2k]

Re: 20 PSI Oil Pressure at idle normal ??

The SBC in your boat is a completely different animal from your 5.3

Just about any oil pressure at idle is OK for a SBC, just don't get up over 70 on the high side or they tend to spin bearings.

Marine engines use a high volume pump and not high pressure.