150cc upgrade no machining
HI all,
This may sound dumb coming from me but I really have not been keeping up with the 150cc upgrades. So I am looking to add a big bore kit upgrade for my customers that does not need machining and was wondering if anybody could tell me what the largest size bore I can order is that does not require machining. I want something that my folks can just install and go without any extra work. thanks for the help, John |
I'd sure like to know that myself.
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Most I know of is changing the jug to make it an actual 158cc. Then over stroke cranks.
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you need a shorty exhaust,
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Quote:
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58.8mm is the largest size bore that can be installed on the GY6 engine without boring the case or a 58.5 but what is the point without a Stroker Crank. Just slapping in a 58.? is only going to give you about 5-6 more ccs around 156cc over 149.6 OEM. That will not even be noticeable to tell you the truth.
Lefty |
Here are my Mods:
Lefty Here is what my PST150H Ice Bear Trike currently has it was a 149.6cc Motor now it is 182cc motor: 62mm BBK 60mm Stroker Crank 16/37 Hoca Tranny Gears – Original were 13/40..I have 18/36 gears I have not put in yet Reduction gear is 43 teeth K&N Air Filter with a Short Stack SuperTrapp Muffler 1 1/4 Header Pipe 24mm Carb #122.5 Main Jet #38 Pilot Jet Peformance Coil/CDI Manual Choke Iridium Plug Prodigy Variator 12g Dr. Pulley Sliders 205/65-10 Kenda Load Tires-3"s taller than OEM 29 tooth Drive Sprocket-came with 24 tooth. DID 428 Pro V Series O-Ring Chain Givia 29" tall Windshield All Led bulbs Except the Headlights-I do not drive at night 4 way Flasher Turn Signal Beeper Relay for the Beeper connected to the Brakes VIP Trunk with Led lights Flasher on Vip Trunk lights Radio with SD card,MP3 connections |
Yeah on a 150 its better to go with a stroker crank, you get more cc's without machining. with a +4 crank you will be at 160cc or with a +8 you could hit 170cc.
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i would like to know this myself
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http://itistheride.boards.net/thread...-crank-project read this......
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