you might find it easier to 'split the overlap' do the same but have the valves on overlap ie both open the same amount. should be more accurate. 1 turn of the crank will give no1 firing
doriandarby,
Aug 24, 7:45am
Hi bill. Does that mean id have them overlapped at bdc?
jmma,
Aug 24, 8:15am
No still om TDC, 4 stroke = 4 strokes to a cycle.
doriandarby,
Aug 24, 8:57am
Thanks for that guys. Judging from the way the engine stopped mid-run but didn't make any bad noises, its a non-interference motor so the valves should be OK.
Fingers crossed we can get it going again!
bill-robinson,
Aug 24, 9:37pm
no, as jmma says, it is a 4 stroke
pdc1,
Aug 25, 2:23am
Agree with the above advice, find the ???on the rock??? point and tdc, job done. It will be easy to spot the rock position by taking rocker cover off, rather than trying to do it at the camshaft end. It will fire the next turn at tdc, but you don??
skin1235,
Aug 25, 3:42am
what is supposed to keep it in that position?, a bolt on its won't won't do it, nor even friction push onto the shaft - it will need keying or locking to a welded stub on the shaft
the pulsations in that mainshaft would shake most things loose in seconds
doriandarby,
Sep 1, 5:06pm
It has a woodruff key to lock the gear in place, but it was missing a nut to hold the gear on the shaft.
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