Anyone help with oil pressure on 1992 Griff?

[vestas]

Today I went to look at the 1992 J 4.0 griff and took it for a test drive. Wow! (First time in a TVR.)

Now (still smiling!) can anyone help me with where the oil pressure should be after the engine is at full normal running temp. Whilst stationary in traffic it was showing approx. 1/4 (just above the white line) and at full tilt it went to approx just over half. Is that what you would expect?

Thanks again to mongoose for his assistance during my search and his offer to come and look at it with me which I will be taking him up on. What a decent bunch of folk you all are!

[2 sheds]

Yes that is totally normal/ healthy
Tim

[griffman]

yes totally normal and healthy, just go and buy it and enjoy.

[mongoose]

so far so good then eh mike? starting to get exited for ya now

[Ballistic Banana]

yep sounds about normal 10-15 lbs on tick over and around 25-40 lbs when driving.

Allthe best for the search, u wont regret it and wont stop Grinning either.

BB

[Trundle]

Yes your oil pressures look OK.

Had trouble on my 4.3 griff on track days when after a hard thrash the pressure disappeared on tick over - yellow light on! Came back with a few reves and then
after cooling off disappeared again not to return.

Turns out pressure relief valve jammed open. Now fixed
and all back to normal.

Buy and enjoy.

[timbeadle]

Pressure is normally low - but beware on a griff of that age that oil pump failure could be imminent (mine went last year)- but fixing it is cheap and easy. One way of upping the pressure is to run a mix of 0W and 10W Mobil 1 if you're worried - it does increase the pressure a bit AND reduces oil consumption.

Tim

[icamm]

timbeadle said: Pressure is normally low - but beware on a griff of that age that oil pump failure could be imminent (mine went last year)- but fixing it is cheap and easy. One way of upping the pressure is to run a mix of 0W and 10W Mobil 1 if you're worried - it does increase the pressure a bit AND reduces oil consumption.

Tim

Or just run it on Mobil 1 Motorsport or equivalent synthetic. Alot of the specialists recommend the higher viscosity oil whether they use Mobil 1 or something else. I've certainly found it cheaper in the long run as I don't have to top it up as often.

Edited because I meant to ask: Why bother mixing the oils? I know it's safe to do it but what's the point?

>> Edited by icamm on Thursday 1st May 13:47

[david beer]

My Griff 500 oil pressure guage read about minus 10 before cranking the car. A 10k resistor across the sender and it reads spot on zero.

[xain]

Dave,
it may be that what you describe is the correct calibration. Like many cars show less than zero RPM with the engine off, but that means they show correctly at higher RPM.

Don't know the answer, but I think I'd be afraid that I'd built in some optimism in the running pressure.

You could get it measured properly I guess, and then calibrate the guage in the same way.