Re:

[Bob Grunau]

John, I'd suggest using 20W-50 oil, 10W-30 is really too light for our XPAG engines. Cold oil pressure should be about 70 psi. I like to see 50 to 60 psi hot. My minimum hot pressure to run is 40 psi, but I hate to see it that low. Regards, Bob Grunau Thanks Bob, That did the trick, I now have 55psi cold with 10W30. I'll take it out for a run and get it good and hot. What is a good hot pressure that is a minimum? John Patterson John, The inner spring was an MG official mod to raise oil pressure for competition work. Normally just the larger outer spring in the relief valve. Just remove the inner spring and the oil pressure on the gauge should drop to about 60 psi. Bob Grunau BlankHi T lovers, I just pulled the plug from the oil pump to change the spring as I have been running 90psi and that's too high! I have not had this spring out for 45 years and to my astonishment there were TWO springs in the guide, an outer spring and a smaller diameter inner spring. Are there supposed to be two springs or just one? Any comments so I can put it back together with one new spring to get lower pressure. John Patterson, Frankfort, MI, TC7025