New Valve Shims, so do I have more power.....?

scharfg

Member
Hi there I just had my 4 valve shims replaced after the top end was rebuilt (~10 000km on the rebuild), I bought the bike ~5 000km ago. I don't know much about engines so I thought I would ask you folks a question about what to expect with the properly shimed motor.

All the valves were beyond tolerances except for one which was close so we changed that shimout as well.

So 3 of the valves had too much clearance and one was too tight, so now all of them are at the max accepted space which will give me the largest range as the valves get tighter over time.

So now that my valves are within spec. will I notice any difference in the performance of the motor?

Thanks!
 
L

Lonewolf

Guest
imported post

imported post

Yes and no...

You may notice that the motor is easier to start, however you wont see any noticeable increase in power. Valves are something that should be checked regularly, keeping them in spec is easy to do and will prolong the life of the head/engine considerably.
 
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