by KE4AVB » Sun Jul 09, 2017 8:47 am
I tend go by this or other specs sheets. As the actual gauging I tend go with minimum gap setting but use step up as a NO GO test. IE say the setting is .006-.010, I set at .006 and see if a .007 feeler gauge will go or not. But a middle of the road setting works for most.
Now OHV valves I do the same thing using the minimum clearance but when it comes the L-heads I reverse the procedure using the maximum setting and use next size up as a no go. This is because OHV valves tend to open up the clearances where L-heads valves tend to close up clearances as these engines valve train wears. Of course with either style engine it is important to hand cycle engine through a few turns so things settle in before checking the final setting.
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