Valve Adjustment

William K Denton wkdenton at
Fri Sep 14 08:38:18 PDT 2007


Yes, it's true.  The valve seats tend to settle into the head over time, 
causing the clearances to shrink.  I always try to set the lash to the 
higher end of the spec range, in keeping with the old saying about valve 
noise that "It's better to hear them than to smell them".

Bill in Yardley, PA
wkdenton at
'96 GPz1100
'86 SRX600
'81 VX920RH
'80 CB-X
'78 XS650E
'77 XS650D

----- Original Message ----- 
From: "Jeffrey Markham" <automan25 at>

I heard recently that when adjusting your valves that you should err on the 
side of loose. Apparently valves in OHV engines actually tighten with use, 
not loosen as common sense would suggest. Is this true?

Jeffrey R. Markham
Digital Designer

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