Originally Posted by
Roelof
Bend a piece of solder in a L shape. Put it through the plughole so the endtip is touching the wall of the cilinder. Move by hand the piston trhough the compression, the piece of solder will be squeezed to the size of the gap, that you can messure.
WOT stands for wide open throttle. It is just a very rich setting which makes the car move very slowly on full throttle. Start with a few tanks and then adjust it leaner in steps until you think you can go on sharp.
thanks for reply... but will different plugs cause different in the head clearance??? i simply add up a 0.20 shim to my JP 0.12 when i started using 25% nitro... what is the cause that we need to decrease or increase head clearance??? is it ok if i add too much shim??? maybe like 0.2 too much or so... thanks again...