nortonracer

Thanks again for the info., the pistons I will be using are Wiseco Prolite 65.5mm which I will set up with a 0.033" squish clearance. I have a Pro Design cool head but no domes as yet as I dont know what size to get. The engine will be used for racing on mostly fast tracks, long straightaways, at low, below 1000' elevations, using mostly C12 race gas or better, and vegetable based premix at 30-1. Thanks again, Dave.

I have standard deck hieght cylinders with 65.5mm bores, I don't know the displacement figure for the piston dome which leaves me lost as to which size head dome to buy to achieve a 13cc combustion chamber. Any help on this matter is greatly appreciated as is the information already given.

My engine is 364cc so I will need a 13cc combustion chamber. Are they available this small for the removable dome type heads? Thanks, Nortonracer

Can some one recomend a fairly safe compression ratio, (uncorrected), or cranking pressure for competition use using 110-114 octane race gas. Thanks. Nortonracer.