s0 i got a KOR ported top end with a head mod i put it together a couple weeks ago and i have run a couple tanks of gas on pre mix 32-1 yamalube 2r with 145-150 psi of compression on it, today i did a couple of plug chops and this is what i got with a 300 main and a 320 my mods are as follow tell me what you think of the plugs
kor port and polish
kor head mod
pro circuit full exhaust
uni filter
air lid off
stock carburator
needle clip 2nd slot from the top down
kor port and polish
kor head mod
pro circuit full exhaust
uni filter
air lid off
stock carburator
needle clip 2nd slot from the top down