Join Date: Feb 2012
Location: coogee beach australia
Thanked 1,328 Times in 832 Posts
pair valve nose has been a cause of 'rattling'
in various motorcycles, up on youtube
for years now.. one solution for one type
of ball bearing movement valve function
was filling the valve with viscous oil..
thus allowing valve to function, but preventing
the ball form moving quickly, thus 'rattling'..
cant recall that model of other details,
but the point there is that it was an external
valve doing its thing,, sendlers pair valve..