“bigger valves were an option but i wanted a strong midrange over a mad top-end”
with the GSX, it’s set at 1mm, and with the rev-limiter set to 9500rpm there shouldn’t be any problems.the EFE cams are dialled-in for less overlap, they give about 1mm more lift, and the heads have been skimmed too. Bigger valves were an option but I wanted a strong midrange over a mad top-end so we stayed stock, but with new valves and a three-angle seat cut.the head was flowed by a local guy who builds hill climb engines – the old school stuff – and a GSX head is not that different to anything he normally works on.”
SEP balanced and welded the crankshaft, there’s also awiseco 1170cc piston kit in there too – pretty much the whole deal needed for a fast road motor. “I spent most of the money on the engine,” says Kenny. “The smoothbores are the thick end of a grand.the whole bike cost me eight grand all-up. It’s easy to spend a lot more than that, but you can’t really get away with less than that if you’re doing the engine properly.”
Looking at the dyno numbers, it seems the ‘local guy’ knows what he’s doing, and that Kenny has done the engine ‘properly’.