kx 85 engine
I have a kx85 engine in my Aprilia RS50
I have done the following
v-force reeds
FMF- SST pipe with the shorty ti silencer
mild porting and knife edged the transfer ports
Vortex makes an adjustable ignition system.
phatheads - cylinder heads
The kx 85 is a good engine, but I think that the yz85 would have been a better choice. On my bike the powervalve dose not come into play.
It seems that there are less and people running two strokes. The crf150r engine is becoming very popular.
You could also run a Hot Rods Stroker crank +2mm
I would like to see some pics of your bike. I am going to post my bike this weedend. cheers, Garrett