Join Date: Apr 2002
Location: Dandridge (Near Knoxville), TN, USA
Re: Valve gap advice needed
No way to know what you mean by "snug", or "tight". The best way to know clearance is by using individual feeler gage strips, held between two slightly oily fingers. If you can push it in easily this way, you probably have a pretty good fit. If you are pushing very hard at all on the gage, you are actually opening the valve slightly.
If you REALLY want a good measurement, use a dial indicator on top of the valve spring cap, push in a larger feeler gage, and subract the indicator reading from the gage thickness.
For instance, use a 0.010" feeler, and if you get 0.004" indicator movement, the clearance is 0.006". Very few of us have or use metric gages, but use the inch readings instead.
From many years of experience, I can say that MOST people push too hard on the feeler gages and get bad readings, with valves tighter than they think they are. Better to have them slightly too loose than slightly too tight.
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