What is the largest big bore kit out?
What mods would you recommend to make the engine better but stick with stock valves ?i always recommend stock bore first...
we run a +2mm intake and +1mm exhaust on the xx along with porting to match....
Stock valve porting on the xx is a waste of money IMO due to the very small OEM valve size....
piston, hc3, +3mm bored tb, clutch upgrade,,, no gonna make a ton of power without going bigger on the head/ valves/camWhat mods would you recommend to make the engine better but stick with stock valves ?
I ask because posting (plus customs charges) a head to and from the US gets expensive and alot of downtine.