hey guys ive just fitted a new standard turbo to my R. problem is theres 4 bolts that oil flows threw. example: 2 from the block to the turbo & 1 of them conncts to back orf turbo. & 1 is water feed. now all the bolts look the same 19mm bolts. BUT 1 of them isnt opend out for flow. 1 has a small jet in 1. looks like a jet size hole you would have in a carbureta. dous any1 know where this bolt go's?? :? :roll: