KymcoForum.com
General => Technical | How To => Topic started by: big blue on September 10, 2018, 04:36:49 PM
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Hey guys I just watched this video from YouTube on the GY6 engine and it's variations. If you have not seen it check it out...https://www.youtube.com/watch?v=i0qzPIamWKk (https://www.youtube.com/watch?v=i0qzPIamWKk)
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Excellent video..
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Informative, thanks....
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Hey guys I just watched this video from YouTube on the GY6 engine and it's variations.
Here's my 2006 Kymco Sento with a 80cc GY6 engine, done about 3 years ago. Cruises at 75kph on flat land. It's a drop-in replacement, only one small fitting needed for the plastic fender liner.
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Nice job, JJ! Where, how did you get the engine unit?
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Nice job, JJ! Where, how did you get the engine unit?
They're listed on eBay for about $200. I got mine on special with free shipping. Arrived 4 days later by FedEx. Installed a 47mm BB kit and a race cam for another $100 or so.
Go to: https://www.ebay.com/bhp/50cc-scooter-engine (https://www.ebay.com/bhp/50cc-scooter-engine)
I had to replace my Kymco unit because I blew it up scooter racing, and a new Kymco engine is way too expensive. Note that the replacement may come with a different stator, and you have to swap it for your Kymco stator to match the rest of the Kymco electrical system. Takes about 30 minutes.
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Here's my 2006 Kymco Sento with a 80cc GY6 engine, done about 3 years ago. Cruises at 75kph on flat land. It's a drop-in replacement, only one small fitting needed for the plastic fender liner.
Did you buy a 50cc engine and install an 80cc bbk? Which bbk?
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Did you buy a 50cc engine and install an 80cc bbk? Which bbk?
I did. It's a Chinese engine, and hi-tech Chinese kits are almost always high-quality. The machining is flawless, and the kit parts are all interchangeable for any given bore size, no matter which company made the kit. There's several different types of heads: 2-valve, 3-valve, etc. And the kits with included cylinder head work cost a little more, but work better than using your stock head. Your stock head will work, but the compression ratio will be higher than ideal. You can buy a race cam from any maker, and it will fit any other maker's engine, so just pick one. Order an extra set of matching gaskets (about $10) to be safe. To get higher speed with your higher horsepower, you have to change the rear gear set. Any gear set will do, just ask for a ratio that's 10% faster than stock. Or 20%, whatever you like. Increase jet sizes 1 or 2 sizes. Don't change anything else to start with, no rollers, weights, whatever. Leave the rest alone, including the carburetor. Takes about a day to swap everything over. After it's running (not before), you can try swapping the CDI ignition for an unrestricted unit. About $20.
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Hey guys I just watched this video from YouTube on the GY6 engine and it's variations. If you have not seen it check it out...https://www.youtube.com/watch?v=i0qzPIamWKk (https://www.youtube.com/watch?v=i0qzPIamWKk)
This link no longer works for me. Any suggestions?
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This video appears to have been taken down.
quote author=eamartin link=topic=26616.msg201107#msg201107 date=1571958196]
This link no longer works for me. Any suggestions?
[/quote]
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Found this, is it similar?
https://www.youtube.com/watch?v=zdrwJb8MLHI (https://www.youtube.com/watch?v=zdrwJb8MLHI)
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Here's my 2006 Kymco Sento with a 80cc GY6 engine, done about 3 years ago. Cruises at 75kph on flat land. It's a drop-in replacement, only one small fitting needed for the plastic fender liner.
I plugged a 100cc BB top end onto a 50cc TaoTao (valves, carb, muffler, ect) and the thing just JUMPED!!! So fun!
Only problem was i kept destroying the clutch...guess it needed something beefier. Other problem was it got stolen like almost every other scooter in Las Vegas