Originally Posted by
bluexile67
may i ask which head shims to add or retract for running the novarossi (stock engine)
with an 8 or 9mm venturri
with werkz blend 30 % nitro
c6tgc plug
stock shims are 2 x .30 and 1 x .20 = .80 total
Leave shimming , if you want to change anything ,get some .10mm and replace the .20mm with .10 for .70mm