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| 150cc GY6 and Under Engine Tech GY6 and Smaller Technical Discussion Forum |
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#1
07-10-2018, 08:52 AM
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Jetting thoughts
OK, I'll probably be firing up my Type-86 motor project this weekend for the first time. It's a GY6 trailmaster motor with a KDU stroker crank (+8mm) and a 62mm jug. The carb is a Mikuni VM26-606 with a 25 pilot jet and 200 main jet. I'm at sea level in MA. Should come out to around 199cc, any thoughts on initial jetting?
Build thread: http://buggymasters.com/forum/showthread.php?t=5604
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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; 07-10-2018 at 01:16 PM. 
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#3
07-10-2018, 01:15 PM
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Will do!
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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
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#4
07-15-2018, 09:01 AM
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 as a point of reference for you, i have chinese 250cc quads i sell and i sell them with the 606 already installed. they usually run great with the stock jetting 22.5 pilot, 190 main. now i just put one in an SSR sr189 dirtbike of a customer and it was 17.5 pilot/ 230 main. most 150's i jet are 15/17.5 pilot with a main range of 180-200 looking at it and i might be wrong cuz no 2 motors jet the same but not reading the motor thread i'm gonna guess 22.5 pilot, 210-230 main.......just a guess, let me know if i was close. p.s. working on your kit today so you'll be hearing from me.
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"LUCIFER" JOYNER JD400, CROSSHAMMER 250R, YERF GX150, CROSSFIRE MBX150, BMS 800V-TWIN '16 RZR 900s , '17 ACE 900XC, '99KX250, '94 KDX200, '18 SSR SR170TX
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#5
07-15-2018, 12:37 PM
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take it back......it's done
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"LUCIFER" JOYNER JD400, CROSSHAMMER 250R, YERF GX150, CROSSFIRE MBX150, BMS 800V-TWIN '16 RZR 900s , '17 ACE 900XC, '99KX250, '94 KDX200, '18 SSR SR170TX
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#6
07-15-2018, 07:09 PM
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Awwwwwwwwww-YEAH!!!!!!
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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
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