As amusing as this thread has been, if the clearance is specified at the valve, measure it at the damm valve...I'm aware that some Hondas specify clearance at the cam end of the rocker, good on them, Honda always were awkward..
The problem with measuring at the wrong end is the rocker ratio...If the ratio is say 1.5:1, .004in measured at the cam end is .006in at the valve...
Which will probably still run OK but just a tad noisy...
Conversely, If it's specified .004in at the cam - but set at the valve end...It will be too tight at the cam and probably fail quite quickly...
Generally, if it's not specified, but there are caps over the valve for adjustment, use the bloody things...
Refer original post. Is a GN125 capable of pulling past 4k revs when new?
I have evolved as a KB member.Now nothing I say should be taken seriously.
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