savageskaterkid Posted October 8, 2007 Author Share Posted October 8, 2007 the pump drive gear is the worm gear on the crankshaft. that gear meshes with the gear on the oil pump drive shaft, if the gear on the crank is on wrong the two gears wont mesh. the drive gear on the crank is chamfered on one side, one side will have a different tapper to it, that side faces the main bearing journal. do you own the how to modify your nissan and datsun book??? if so turn to page77 there is a pic of the crank pulley, behind that is the worm gear,than turn to page 93 , read where the headline says install external parts. I hope this helps.. It appears that this may be causing the problem, is it a possiblility that the worm gear may have slipped?!? I do own the book, although another Z friend is borrowing it, could somebody scan these 2 pages? What I don't understand is, I put the oil pump on when it was on the stand, all went in fine. The I had to remove the front cover because I forgot to put the oil thrower in there, could this be what I'm hitting, is there a possiblity that I put the oil thrower in wrong? Quote Link to comment Share on other sites More sharing options...
schwiplarkin Posted October 21, 2007 Share Posted October 21, 2007 could be, sorry to say it but you need to pull off the front timing cover and reinspect everything, the slinger also has to go on one way, it could be backwards. good luck Quote Link to comment Share on other sites More sharing options...
savageskaterkid Posted October 21, 2007 Author Share Posted October 21, 2007 Yah, i popped it off and fixed it last weekend. Slinger wasn't seated right. Still have yet to fire the car up. Quote Link to comment Share on other sites More sharing options...
schwiplarkin Posted October 27, 2007 Share Posted October 27, 2007 cool!!!! good luck Quote Link to comment Share on other sites More sharing options...
savageskaterkid Posted October 27, 2007 Author Share Posted October 27, 2007 turns out that I set it off the pump, and my timing was only off by about 70 degrees. I'm actually impressed that it would backfire. I pulled it apart again and got the timing set at 0 degrees and I'll time it from there. Its ready to run, but I had to fix my daily. I may start it tonight, if not tommorrow. Quote Link to comment Share on other sites More sharing options...
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