Re: [alfa] Grinding valve shims vs valves

[Ed Lutz <edlutz@xxxxxxxxxxxxx>]

Thats definitely the case with shim type motorcycle systems. We grind shims 
all the time (either very carefully on the flat side of a wheel, or a 
sanding disc or preferable with a surface grinder) but never grind the 
valve. The valve is also much more expensive to replace than a shim so I'd 
rather grind a shim just for that reason.

Ed

At 05:48 PM 1/18/2004, you wrote:


> I'm not an expert, but it was my understanding you DO NOT want to take any 
> material off the valve stem, because it can lead to insufficient clearance 
> between the shim and the valve keepers, and can lead to catastrophic 
> results if the keepers release the valve.
>
> Anyone know for sure?
>
> //kct, Powell TN
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