Quote:
Originally Posted by Jim Brierley
Syncro, you restrict the outlet of the pump??? Sounds like that is defeating the purpose of it all except the center main.
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With a 25 psi oil pressure relief valve, oil is trying to exit the top of the pump at 25 psi. With the original arrangement, it exits at 3, maybe 4 psi. By leaving some way for 25 psi oil to enter the valve chamber, I have enough oil to lubricate the front and rear mains the conventional way.
An alternative (and my first method) was to allow the oil from the middle bearing to flow back UP the original oil hole, back into the valve chamber after going through the middle bearing. When I plugged that hole, I slightly enlarged the exit hole for the oil into the valve chamber.
I must have done something right - I have about 70,000 hard miles on that engine now and it's still going.
Brent, I understand your reservations about drilling and tapping the oil pump housing but I did it without a problem.