Oops, typo, Yes, 63mm
As mentioned earlier, I think an engine swap is in order before dropping the $$$ on a good quality 4 valve head.
Could prob get a bike, sled, or ATV engine for the cost of a 4 valve set up and see some real HP gains.
__________________
My Yerban assault vehicle: 2.2mm stroker crank, 62mm Nikasil cyl, Taida large vavle head, American made valve springs, ported intake manifold, TM 28mm carb, stock CDI, Bando coil, TK exhaust, stock CVT except for the 14g sliders, 13/40 internal gears, 16T drive, 31T axle sprocket, 22" rear tires, and ONE BIG POTATO CANNON mounted on top..........
|