ap72 wrote:I actually don't want this to be too fast, so that's good, I just want to improve the low end and throttle response, make it more enjoyable to ride.
af2 wrote:ap72 wrote:I actually don't want this to be too fast, so that's good, I just want to improve the low end and throttle response, make it more enjoyable to ride.
The very first thing I would do IF THE ROD IS TIGHT would be to cut the squish down to .025 and be 50% of the bore circumference. You might have to also cut the top of the barrel to get there. I have found on a trail type bike 175lbs is pretty much max compression.
Without touching anything else you will be suprized how it acts.
JES wrote:Not trying to upset anyone. But that bike and engine combo has very limited potential. It would need a special expantion chamber, highly modifyed ports and reed mods, a much larger carb/free flow air box etc. That bike was ment to be a play/beginner bike when new. Not an MX bike as the name suggest. If all this were done, the suspension would still be inadequate. IMO, just rebuild like stock. Clean-up on the ports is O.K. but don't change the hight or shape. Make sure to clean the silencer at the end of the pipe, as this likes to get clogged, and really restrict the power. All this said, it is still a fun bike to ride, just not a fast one. John
Dirty Imp wrote: Rejet accordingly, 2 strokes live and die by the tuneup.