Thanks Don and Bob. Bob the engine runs fine at 30 lbs. All the newer flatheads I've run 52-53, at 60 and 70mph, the oil pressure would be around 50 and drop to 5 at idle. This engine runs fine and at 70 the pressure is 30 and at idle 5. Just a big difference in pressure between the older and newer model of flattie's. Just had me wondering. Bart