Gday Jolls, A couple of years ago I replaced my L series motor with a rebuilt J block one. The L series one had the self-tapper screw in the connecting nut, so I put it in the J block after I had done a few K with it in the car. . Car started to smoke profusely from the exhaust when accelerating after going down hill, or even slowing down for an intersection, and then accelerating again. Went through a process of elimination, then tried removing the self tapper. Car immediately stopped smoking. Apparently too much oil was being delivered to the rocker gear and getting down onto the valves through the stem seals somehow. Apparently the screw works well with worn engines, not rebuilt ones.? Wiser people than me might be able to confirm or deny this. cheers, Mike.



