Ah come on. This guy posts a gun, and we mess his thread up with talk about grammar, weed and prostitutes...
I think you will find the most improvement in performance by shortening that piston. A piston as long as its diameter is long enough.
On really tight fitting pistons you could go even twice as short, but the shorter it is the larger the possibility of tumbling and jamming, so just go with a length as long as the diameter.







