mirage tank

You don't need to take the camshafts out to identify the sprockets, even if there's no ID marks on them.

Have a look at the location of the two fixing bolts in relation to the sprocket teeth. If they're aligned with the points of teeth, then they're 4C sprockets. If they're not aligned with teeth points then they're A11 sprockets.

Fitting 4C cams using the old A11 sprockets seems to be a common cock-up. If your bike was originally fitted with A11's and someone later fitted 4C's then it's a fair chance that's what you've got.
 
Dellortoman said:
You don't need to take the camshafts out to identify the sprockets, even if there's no ID marks on them.

Have a look at the location of the two fixing bolts in relation to the sprocket teeth. If they're aligned with the points of teeth, then they're 4C sprockets. If they're not aligned with teeth points then they're A11 sprockets.

Fitting 4C cams using the old A11 sprockets seems to be a common cock-up. If your bike was originally fitted with A11's and someone later fitted 4C's then it's a fair chance that's what you've got.

I foresee a whole load of cam covers being lifted in the near future  :P
 
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