I've got a 153 built for inboard hydroplane racing. We've fired her off, she runs like a dream, except for one thing. We aren't getting any oil coming out of the lifters. We've got Crower Solid Roller lifters, brand new (PN: 66206-8). We had the same issue with a set of hydraulic rollers that were in it when we first got the motor (they were probably 10 years old)
We've got plenty of oil pressure when priming the pump (45+). With the lifters pulled out, oil comes through the galley into the lifter bores. With the lifters in, oil weeps around the lifters and oozes out the side of the block. Turning the engine over while priming doesn't seem to make a difference.
We've checked that all galley plugs are in and where they are supposed to be. Confirmed that oil is getting to the crank. There are no external oil leaks.
We've missed 3 races this year trying to get this motor to cooperate and are out of ideas. Can any of you help us out?
