I have not used a crush washer yet that would crush. If you need another 1/4 turn or more you're outta luck in my experience..... I like to be light-handed torque-wise on these and don't like to just turn it on harder to get there. I always wind up calculating how much of a turn I need and what that translates to in washer thickness, then I surface grind the washer until I get the indexing I want at the lightish torque I want. I don't have a spec but I'm gonna guess I go 15 foot pounds or less (just going by memory here, I think my Yamaha DT3 called for 25 ft-lbs on the spark plugs and I don't go that tight on FH's).


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