![]() ![]() I tuned it starting with the heavy 9g weights it came with and moved down till I got to 4g weights I have in it now. I bought the Hoca Variator ($50 on Parts For Scooters) and I already had an assortment of weights. I have a jet kit for it that I have yet to have the chance to start tuning with. That only changes the results from idle to 1/4 throttle. Meaning I got access to the air/mixture screw. Here's some food for thought.įirst things I did to it were I changed the fuel and vacuum lines, new fuel filter and I unsealed the carb. I wasn't planning on doing anything to it at first, but I've been suckered in little by little. It's similar to the ATM50 as it's also a 4 stroke chinese engine. If you go all the way to a 50mm or larger bore and a stroker crank, then consider a larger carb like a 24mm from a stock GY6 150 paired with the GY6 150 intake, spacer, and gaskets and port matching. just get a main jet kit so you can tune it ( Parts For Scooters #114-49 ). If you go with a 72cc, a stock carb should work fine. I don't believe it's going to be a big gain for what it costs. DLH and Koso units are pretty cheap, but some of their reviews are poor at least for longevity. NCY, Hoca, and DRPulley make variators that get good reviews. Still it's often cheaper to get a kit and tune, then buy a good set of rollers for regular use. The catch is they don't hold up to regular use. You can get tuning roller kits that have lots of weights. Springs and rollers need to be tuned, so don't plan on buying just one spring or set of springs (clutch) or one set of rollers. just get a main jet kit so you can tune it ( PFS #114-49 ). Not sure if the offer still stands, but here's a 72cc to look at :Ĥ/thread/10268/big-bore-kits-sale That said, Chinese stuff can work fine (your stock stuff is Chinese). Basically from bottom to top it's usually Chinese, Taiwan, and then Europe made from worst to best. You can spend a lot on a kit, but we've had quite a few members seemign to be pleased with cheaper big bore kits. If you want the easier way to get more power with less risk of premature crank failure, go with a 72cc kit (called 80cc by most sellers, 47mm bore). If you must go with a 50mm kit, then consider a crank like the Naraku Heavy Duty or a stroker crank by Hoca or ScootersToGo. ![]()
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