Block/head -Hisun
PVL Flywheel
ARC Billet Rod (See below)
22 lb valve springs
Cam- Dyno Super X 265 lift
Head shave (See below)
3/4" crank
Bored stock carb (.650?)
93 octane ethanol free
I've got a Coleman 196 that my son broke the crank. Didn't seem to do any damage and actually still ran, so I'm planning on building it and dropping it in my Baja with a Juggernaut, 7 inch driver, and 10/70 sprockets. I don't do any cruising with the Baja, its all 50-200 yard sprints across our property, wheelies, and small jumps, so takeoff power/torque and throttle response are essential. I've got a Tillotson 212r in it now, which is great, but would like to see if I can do better.
Biggest question right now is the best way to increase compression. I'd like to aim for 10-10.5 (or should I go higher?). I can shave the head, or go for a longer rod, or a combo of both? I'd like to use the stock pushrods for economy reasons if possible. Will they still work with a .060 shave? I have not measure how far in the hole my piston is yet, nor have I called Dyno to see if the base circle on the Super X is the same as stock. Which brings me to my next question. Is the Super X appropriate for a low geared CVT minibike or should I be looking for a smaller cam (or even stock).
I do not like the way Mikunis stick out (likely to hit something where we ride) so I would like use a bored stock carb. Is .650 appropriate, or would .625 be better?
Last question, I would have a displacement and valve/flow disadvantage on the Tillotson, am I chasing my tail here?
PVL Flywheel
ARC Billet Rod (See below)
22 lb valve springs
Cam- Dyno Super X 265 lift
Head shave (See below)
3/4" crank
Bored stock carb (.650?)
93 octane ethanol free
I've got a Coleman 196 that my son broke the crank. Didn't seem to do any damage and actually still ran, so I'm planning on building it and dropping it in my Baja with a Juggernaut, 7 inch driver, and 10/70 sprockets. I don't do any cruising with the Baja, its all 50-200 yard sprints across our property, wheelies, and small jumps, so takeoff power/torque and throttle response are essential. I've got a Tillotson 212r in it now, which is great, but would like to see if I can do better.
Biggest question right now is the best way to increase compression. I'd like to aim for 10-10.5 (or should I go higher?). I can shave the head, or go for a longer rod, or a combo of both? I'd like to use the stock pushrods for economy reasons if possible. Will they still work with a .060 shave? I have not measure how far in the hole my piston is yet, nor have I called Dyno to see if the base circle on the Super X is the same as stock. Which brings me to my next question. Is the Super X appropriate for a low geared CVT minibike or should I be looking for a smaller cam (or even stock).
I do not like the way Mikunis stick out (likely to hit something where we ride) so I would like use a bored stock carb. Is .650 appropriate, or would .625 be better?
Last question, I would have a displacement and valve/flow disadvantage on the Tillotson, am I chasing my tail here?