You will find there's frequent oiling challenge With all the pre-1992 R32 RB26 motors, as the surface exactly where the crankshaft meets the oil pump was machined as well tiny, sooner or later leading to oil pump failure at higher rpm. This concern was resolved in afterwards versions from the https://nissan-rb26dett-for-sale91258.mybloglicious.com/51875868/about-used-rb26-engine