Quote:

The switch from iron heads to alloy for the Tiger 100 had also introduced to the discerning, a noisy valve gear. This was cured in part by the introduction of cams with quietening curves, engines fitted with 'ramp' cams have a small compass like wheel mark after their engine numbers, the iron engines mechanically speaking are as quiet as the grave.




Our modern twins although a bit loud should not sound as noisy as the old 650s. If they do the valve clearances should be checked.

Blowing gravel off rural roads