sohcfour
Tuned and Synch'ed
All -
I just got my 2009 Griso 8V out on the road for the first time this week (winters in Wisconsin are long). I only rode to work and back, about 8mi round trip, but by the time I got home there was quite a clatter coming from the left cylinder head.
I just removed both valve covers and checked and adjusted the valves. Sure enough, the left intake adjusters had a TON of play. I didn't measure it, but let's say 1mm or more. It was considerable. The lock nuts weren't loose, and it was both left intake valves. (The other 6 valves were OK).
I adjusted all 8 valves, and I was able to adjust the slop out of all of them. However, where 6 of the valves show some adjuster screw visible above lock nut, the 2 left intake valves adjusters are flush with or maybe even below the surface of the lock nut.
I actually measured all 8 valve adjusters vs. the lock nuts. 6 of them show about 0.050in adjuster above the lock nut. The 2 left hand intake valves measured 0.005in below the lock nut.
I started the bike briefly after doing this and it sounds normal again. I did not ride it. Does anyone know what would have caused this? It's as if there's some kind shim in that left hand intake valvetrain that went missing, but I see no evidence of a whole or pieces of any kind of part.
Any input would be highly appreciated.
- Matt
I just got my 2009 Griso 8V out on the road for the first time this week (winters in Wisconsin are long). I only rode to work and back, about 8mi round trip, but by the time I got home there was quite a clatter coming from the left cylinder head.
I just removed both valve covers and checked and adjusted the valves. Sure enough, the left intake adjusters had a TON of play. I didn't measure it, but let's say 1mm or more. It was considerable. The lock nuts weren't loose, and it was both left intake valves. (The other 6 valves were OK).
I adjusted all 8 valves, and I was able to adjust the slop out of all of them. However, where 6 of the valves show some adjuster screw visible above lock nut, the 2 left intake valves adjusters are flush with or maybe even below the surface of the lock nut.
I actually measured all 8 valve adjusters vs. the lock nuts. 6 of them show about 0.050in adjuster above the lock nut. The 2 left hand intake valves measured 0.005in below the lock nut.
I started the bike briefly after doing this and it sounds normal again. I did not ride it. Does anyone know what would have caused this? It's as if there's some kind shim in that left hand intake valvetrain that went missing, but I see no evidence of a whole or pieces of any kind of part.
Any input would be highly appreciated.
- Matt