NEW STEP BY STEP MAP FOR NISSAN SKYLINE RB26

You will find there's typical oiling issue Using the pre-1992 R32 RB26 motors, because the surface where the crankshaft fulfills the oil pump was machined also smaller, finally leading to oil pump failure at high rpm. This challenge was settled in later variations from the RB26 which has a broader oil pump travel, which is present in all R33+ RB26