Originally Posted by auslyle
its oil starvation for sure, this motor had just hand a RS oil pump on it, but ones before have been sti oil pumps
Unless you were running substantially larger than stock bearing clearances and you had an oil pressure gauge showing you that you were making less than 10psi/1kRPM, it wasn't the oil pump's fault.
The 7mm oil pump will make 20psi/1kRPM on stock bearing clearances. That's more than enough flow.