The two significant challenges on the RB30 relate on the oiling system and crank collar. This isn’t certain to only the RB30 collection, given that the RB20/twenty five/26 even have pointed out problems With all the oil pump and oiling units. All of them have problems with this problem (early https://nissan-skyline-engines48046.humor-blog.com/27706221/the-2-minute-rule-for-nissan-rb-engine-for-sale