Join Date: Nov 2009
Location: Lander, Wyoming
I do not mess with metric measurements for valve tappets. As I've never found a feeler set marked in .025mm (.001inch) increments.
I always hope to achieve at least a loose ,006 or .007 inch on the Intakes. But preferably a Snug .008 inches, but never a loose .008" on intakes.
Also at least a loose .008 or .009 inch on Exhausts. But preferably a Snug .010 inches, but never a loose .010" on exhausts.
I write my existing clearances as such to help guide shim choice.
Could be <.006" / or could be .006" / or could be >.006" on either of your exhaust valves.
On a <.006 one should be able to use 2 sizes thinner and achieve either <.010" or a perfect snug .010".
Remember we are working with a lot stiffer springs than ignition breaker points.
Modify at "YOUR OWN RISK"!
Still riding my 1987 KL650-A1. 85,000+ miles & counting