zbuild Posted June 24, 2005 Share Posted June 24, 2005 Ive got a turbo'd L28 and use a Motec computer for timing. When I built it I just removed the distributor and made up a plate to fill the hole. Its been like this for 4 years with no problems.. . someone recently suggested I might have trouble because the top of the shaft that drives the oil pump is no longer supported. Any ideas on this? Cheers - Zbuild Quote Link to comment Share on other sites More sharing options...
datsunlover Posted June 24, 2005 Share Posted June 24, 2005 I think it'll be fine. The shaft IS suported iirc by the front cover, and the 'drive' for the dizzy is a smaller diameter that just sticks through that.. I'm pretty sure there is a boss internaly that the main shaft diameter rides in/on. Besides, if is WAS going to be an issue, I would think you'd have had problems by now.. First thing I think would go would be the oil pump, or the gear on the shaft.. and if it's been running good for 4 years, I'd leave it be. Quote Link to comment Share on other sites More sharing options...
zbuild Posted June 24, 2005 Author Share Posted June 24, 2005 Yeah I thought that would be the case. . . the bearing in the bottom of the dizzy only locates the shaft horizontally, the verticle movement is controlled by that internal support you were mentioning. I remember checking it out when I put the engine together and not being worried about it. . . you know how it is though, someone comes along and plants a seed of doubt in your mind. . . .and bingo, you got an imminent disaster! Cheers - Zbuild Quote Link to comment Share on other sites More sharing options...
preith Posted June 24, 2005 Share Posted June 24, 2005 I'm running the Electromotive DIS and have the distributor hole blocked off as well. I was worried about the same thing, and before assembly I cut off the rod just above the larger diameter portion which rides in the front cover. Maybe it's nothing to be concerned about, but I could see it whipping around at higher RPM's. Besides, it took about 2 min. to do. Quote Link to comment Share on other sites More sharing options...
Doug71zt Posted June 25, 2005 Share Posted June 25, 2005 I think that most people running coilpacks cut the shaft, as the upper end doesn't really run on any bearing surface when the dizzy is removed. The dizzy keeps the shaft running (relatively) true. I would drop it out and cut it off where it necks down. A 15 minute job for piece of mind. Doug Quote Link to comment Share on other sites More sharing options...
materchan Posted June 26, 2005 Share Posted June 26, 2005 the diesel maxmias have just that, a oil pump shaft with the dizzy side of it removed. Quote Link to comment Share on other sites More sharing options...
zbuild Posted June 27, 2005 Author Share Posted June 27, 2005 Cool! thanks for your replies, nest time Im in there I'll do a big of chopping. Thanks again Zbuild Quote Link to comment Share on other sites More sharing options...
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