i need help w/duster engine

bigdemo1 said

Melissa I could be way off here but it seems to me that if you bring your cam to max lift then that is where the piston will be at max lift,then check your clearance with the dial ind.that will be the clearance for that cam,knowing this you should be able to stack measurements and arrive close to a # for the other set-up.I don't think the motor knows or cares if you use clay or not after it will be the same measurement.

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This is dangerous advice my friend, minimum valve to piston clearance does NOT happen at max valve lift. In fact it happens on the intake as the piston is going down and the valve is opening. On the exhaust side (this is why they recommend more clearance on the exhaust valve) the piston is coming up as the valve is opening but minimum clearance is still not at max lift because the valve is already closing as the piston approaches.