Originally Posted by
dreaux
Neal I have wondering about something. When looking at a vspec piston and a jpx piston, the o.s. Piston is noticeably bigger then the jpx. So does that mean the jpx has a longer stroke to have the same .21 displacement or cubic inch? I would have thought the bigger piston would create more torque, but that is not the case. Just curious if you are not to busy.
The V-Spec has a bigger bore and a shorter stroke... traditionally the longer stroke engines make more torque and the shorter stroke engines make more RPM....However in 2 strokes many other factors are involved in determining the engines powerband characteristics....I am not sure I can explain it all properly, but its safe to say Picco engines make insane amounts of torque !