Originally Posted by
mattwoodcraft
okey grizz i have read about head shims now obviously afer my engine has completely run on on both of my motors i will recheck the head shim clearance
so i all i really need is a .1 or .2 head shim to give me a total clearance of .4 0r .5 on my 3 and 7 port .....
that will be good for a medium hot/plug and 25% nitro
is this what you done befor ?
I believe grizz runs 3mm shim stack with 25% nitro. I run 3mm shim stack 30%nitro os-p3 plug. I have also used a od-77t plug[odonnell] On my ebmodded 5 port I use the 6.5 mm resticter and set epa at 65%. Still tons of power and run times hang around 12.5-13 minutes. Thats per tank using sidewinder worlds nitro. I switched to byrons gen2 prodriver and got a little bit better all around performance. I had to lean slightly and the engine seems crisper,fuel burns cleaner? Not sure how to describe it.I also use dynamite 086 pipe header combo on all 3 of my go-tecs.