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Hey guys I've been out for a few days..work. I am still running the same set-up and no hiccups. I do have the kehin carb instead of the kymco carb. The person I got the scoot from had swapped the stock carb for some generic carb and I asked him for the stock carb. I completely went through the stock carb and it ran like crap. I used a kehin off a scoot that had blown up. I haven't touched it in about two weeks and I drive it about 38 miles everyday! It's ready for the second oil change since the rebuild. I change it every 550 miles. 94 main jet is perfect with the needle set one slot from the top (all the way down). That is with head work, exhaust work and intake work.

I have the 72cc kit ( my second one) and the difference is huge. I heard that the 85cc kit is hard on the crankshaft bearings. You won't need a bigger carb, but opening up the intake and exhaust helps a lot. I also put a performance trans. kit and the two together made a world of difference. What are you looking for? Daily driver? Top speed, good cruise speed, or great acceleration? I have experimented a lot and can help you with more info.

I'm gonna put a manual choke on my scoot, so I can open it up at high speed to allow more fuel into the mix and see if that works. That way I can get more fuel and air in and more power out, since a motor is just an air pump anyway. I'll let you know how that goes.

Yes! Everything is working perfectly. I started with the wrong slots in the new clutch, but changed that and acceleration is twice as good. top speed by my chinometer was about 56. so, that probably equals about 50-51 mph. All in all money very well spent. I did use 6.3 gr rollers over the 9 gr ones that came with the clutch kit. I have about 700 Km on it now and it is running better every day. Up hill is very easy with the biggest one I ever go on slowing me to only 41 versus 33-35 before. Parts installed are enviromoto's 72cc bbk, and NCY performance trans. kit. Old average speed was 35 ( counting hills and flats) new is 44. That's a big difference in my book. I could get probably 4-5 more mph out of it ( with enough room) since the rpms seem pretty low compared to before even at top speed.

Have you tried jumping it across the solenoid? It could also be the starter bendix. Try taking it out and cleaning it good and check your bushing it the cvt case if it is worn it could be binding. Also check to make sure you have a good charge on your battery. Just a few things to check. Hope this helps.

The new rings were pretty much right on. I took about .001" out of both to give a little extra room since these engines run hotter than a water cooled. So, they ended up at .008" top and .010" bottom. And yes it is nice when everything comes together nicely. I figure I will need a little tuning on the carb, but it seems to be right on I just upjetted two sizes. I haven't done more than about a 2 second full throttle pull yet, but I can tell that opening up the head, intake, and exhaust helped air flow tremendously. I also took the carb completely apart and ground down the throttle plate screws and sharpened the leading edge (of the throttle plate) to improve air flow through the carb The intake and exhaust note is louder and deeper. I have an iridium plug, but I'm gonna make sure I have the carb just right and the motor broken in before I put it in, so I can see how much of a difference it makes. I'm gonna order the trans kit tomorrow, have it in three days. I'll keep you posted of my progress.

Yeah, methanol. Ethanol is what gives us problems.

That's a geat idea. By the way do you know the number of the belt cross referenced over. Mine just says bando and a bunch of numbers that I haven't found on any sites. most are like 669-18-30, or 729-18-30. mine has no numbers like this.