Grand Prix 500
Main Motorcycle: 1976 Triumph Bonneville
Join Date: Feb 2009
Location: Canoga Park, CA
|Classic, Vintage & Veteran For Coventry and Meriden Models. Anything pre-Hinckley goes.|
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I think I see now: So you're saying that the oil comes out of the hole in the crankcase that's behind the clutch drum, where the crossover shaft emerges before its 'U' piece? This hole should have an iron bush at each end - best to make sure these are in place.
So, after the oil has come out of this hole, it then finds its way out of the drain plug-hole (the plug from which you have removed), and from there splatters all over the place or forms a pool if you park the bike on the sidestand?
Well, no significant quantity of oil should get through that shaft bore. It shouldn't be above the level of the bore at the gearbox cover end, and the gearbox shouldn't build up enough pressure to force oil through what should be the very small gap between the shaft and the iron bushes.
Have you got no more than 500ml of EP90 gearbox oil in the box? Do you know whether those iron bushes are ok? There should be NO appreciable slop between the shaft and the bushes at either end.
If I've understood the problem correctly and if all the above is AOK, I'm certainly stuck for ideas!
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