Oil Pump Dilemma
Oil Pump Dilemma I have a Schumann’s LS/Pro/XV oil pump. I had it in my first 454 and 45 minutes after initial startup the bypass ball stuck open while it was idling. I noticed oil pressure was less than 20 psi but thought it was normal. The next time I started the motor, there was no oil pressure and it wiped out the main bearings.
The company I bought the pump from sent me a new pump and I used it with no problems. The ERL shortblock lasted 3700 miles before it was basically worn out but that’s another story. The new motor has about 400 miles on it and about 30 track passes. We decided to reuse the Schumann’s oil pump from the old motor because it had not given any problems. Friday night after my second 1/4 mile pass, oil pressure was 15 psi at idle. Normally it would have been 27-30. Above idle, oil pressure was normal. The car sat for almost an hour waiting for the second round and when I started the motor, oil pressure was 0. Pulled the front cover today and the damn bypass ball was stuck.
Has anyone else had this happen?
What pumps are others using in high rpm engines?
The company I bought the pump from sent me a new pump and I used it with no problems. The ERL shortblock lasted 3700 miles before it was basically worn out but that’s another story. The new motor has about 400 miles on it and about 30 track passes. We decided to reuse the Schumann’s oil pump from the old motor because it had not given any problems. Friday night after my second 1/4 mile pass, oil pressure was 15 psi at idle. Normally it would have been 27-30. Above idle, oil pressure was normal. The car sat for almost an hour waiting for the second round and when I started the motor, oil pressure was 0. Pulled the front cover today and the damn bypass ball was stuck.
Has anyone else had this happen?
What pumps are others using in high rpm engines?
I'm planning on getting the car to the track for first time testing. Oil psi is so far so good with Melling 10296. The Schumann LSX Pro V are suppose to be good modified oil pumps.
