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| 150cc GY6 and Under Engine Tech GY6 and Smaller Technical Discussion Forum |
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#1
11-24-2014, 07:36 AM
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VM26-606 baseline
I'm trying to dial in my VM26. Starts fine, idles fine, boggy if you give it throttle. Anyone have a baseline? I'm at sea level currently 50-60 degrees F, 17.5 pilot, 140 main, needle clip second from the top.
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2013 Trailmaster XRX 150 Type 86 stroker Taida 4V head with 23/22mm valves, forged 4V piston,Taida 62mm jug,forged Taida 8200 KDU stroker crank, Koso high-flow oil pump, Taida case half w/ oil cooler ports, Setrab oil cooler,TrailTec Vapor, Mikuni VM26-606, aluminum 30mm intake, Uni filter, aluminum stack, Hammerhead racing exhaust, MotoRio adjustable CDI/HO Coil, Iridium plug, Full Dr Pulley CVT kit w/ 16g sliders, JD's Mikuni slide kit 2014 Kandi 90B Last edited by wildbob; 11-24-2014 at 10:45 AM. |
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#2
11-25-2014, 06:53 AM
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wildbob I would get a good assortment of main jets and jet up until you get a puff of black smoke under wot acceleration. This would put you rich on your jetting and simply back off jets until it feels good and then get a new plug and do a plug check.
Best plug check: Warm up and ride the buggy with the old plug. Once fully warm install new plug. Run the buggy at wot on a long straight run ( keep it at wot for as long as possible ) Kill the ignition and let the buggy stop. Pull the plug and check for color. Light tan is what your after. Any lighter jet up, any darker jet down.
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