You will find there's frequent oiling challenge With all the pre-1992 R32 RB26 motors, as being the floor where by the crankshaft satisfies the oil pump was machined much too small, ultimately leading to oil pump failure at higher rpm. This problem was resolved in afterwards versions in the RB26 https://kylerdwjym.gynoblog.com/30585757/detailed-notes-on-motor-rb26