Originally Posted by
Gloomshadow
no, 984 pistons on a 1203 crank will raise compression to 12;1 so hot. you would have to run premium.. any time compression goes up, heat goes up on air cooled motors and redline stays the same but more power in the stroke. he was saying run 984 pistons or forged aftermarket versions, they are pretty cheap.. then just filter pipe and race map. When you do this there will always be increased wear but maybe you could shave the domes down on them to make only 11:1 that would be streetable.. a 984 is 10.5 :1 so I don't think it would be a problem.
benefit of the 1250 kit is that its still a low 10:1 compression so no change in that.. but the gain is only a few horse... and its not actually 1250... more like 1230 if memory serves.