Nissan rb30 camshaft RB30DE Engine Built Tips - velocity.net Tried and proven is to O-ring the block and use a standard Nissan RB26 OEM head gasket. This is more of a problem in the rb30’s that run twin cam oil... Source Source Source Source Source Source Source Source Source Source Read Also: Nissan rb30 timing marks Used rb30 nissan australia Nissan rb30 head gasket Genuine nissan rb30 head gasket Nissan rb30 build Nissan rb30 intake