You will find a popular oiling dilemma with the pre-1992 R32 RB26 motors, as being the floor wherever the crankshaft fulfills the oil pump was machined way too compact, sooner or later leading to oil pump failure at substantial rpm. This situation was settled in later variations in the RB26 https://jaidenatlaq.blogcudinti.com/31229930/considerations-to-know-about-nissan-skyline-engines