Ok guys, im building a rb26/30 and am looking for around 550rwkw in race tune eventually. The heads almost done and consists of custom 272ish cams with 10.5mm lift, bigger springs, ported head, match ported greddy intake with 80mm t.b. The exhaust manifold is a 6boost one and turbo a mr turbo ceramic ball bearing T72 which is similar in size to a gt42.
The bottom end is being built at the moment and is why i need to decide on which oil pump to use so the right size restrictor can be put in. I have done all the things mentioned by Sydnekid to control oil including enlarging the return oil galleries from the head, external drain at the back of the head, H.E sump etc
Ive searched heaps and have heard alot of bad things about n1 pumps failing. I am concerned about it breaking especially when hitting the limiter and DO NOT WANT TO RISK IT BREAKING! Should i just sell the n1 pump and get a JUN pump as they are $1000 on nengun and greenline so $600 more. Or should i stick with the n1 and somehow setup something thats cuts ignition and fuel when low oil is sensed to save the engine incase it breaks?