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Post by llib on Mar 25, 2013 19:13:49 GMT -5
I'm going to order 2 new cy50-t3's next week and i want to install 100cc big bore kit with exhaust, carb, head and so on for them but what i need help with is howho has a kit that has it all in a kit?
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Post by tvnacman on Mar 25, 2013 19:22:13 GMT -5
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Post by llib on Mar 25, 2013 19:30:20 GMT -5
I was hoping to find a kit that has carb exhaust air filter and on and on in a big bore kit all the goody's in one kit
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Post by tvnacman on Mar 25, 2013 19:36:25 GMT -5
I can work that out for you , find all the items on my site put them in your shopping cart . Send me an email when you have everything you want . Then I can work the numbers for you .
John
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Post by JR on Mar 26, 2013 19:07:22 GMT -5
llib,
You know that your case will need to be reamed out for it to fit in don't you? Usually or at least frequently anything over 72 cc (sometimes called an 80) will need the case bored out so the new cylinder will slide in.
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Post by skuttadawg on Mar 26, 2013 19:13:12 GMT -5
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Post by millsc on Mar 26, 2013 20:16:47 GMT -5
I didnt have ream or bore out the case on any of the 50mm kits ive done and ive done over 20, didn't even have to bore the case for my scrappy 52mm kit either  |
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Post by llib on Mar 26, 2013 21:55:04 GMT -5
Someone found me the kit i was looking for. Thanks for the help.
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Post by skuttadawg on Mar 27, 2013 0:53:44 GMT -5
Never heard od a 139QMB needing to be bored . I know a GY6 would need boring if 6x+mm BBK and if over 47.6mm on a 2T which would also need bored for a  crank as well as larger cylinder |
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Post by JR on Mar 27, 2013 1:10:10 GMT -5
Well, I have never put a big bore kit on a 139QMB/GY6 but the old forum used to be full of threads that said you had to do it, people were posting about taking a dremel to their case and hoping they got all the metal shavings out of the case. Maybe these new kits have thinner walls, I dunno.
llib, post a link to that kit.
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Post by skuttadawg on Mar 27, 2013 1:17:28 GMT -5
I think NCY has a GY6 BBK that has thin walls and does not need boring like many 60+mm BBKs
A 72cc is a safer option with less wear on the crank than the 8x and up kits
I know on a 2T going from 40mm 49cc to 47mm 70cc is such a major improvement
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Post by llib on Mar 27, 2013 9:51:09 GMT -5
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Post by millsc on Mar 27, 2013 10:24:11 GMT -5
that cam is no different than stock i've installed that kit too, if you buy the first kit message the seller on the jet you want or he will send an  |
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Post by llib on Mar 27, 2013 11:49:00 GMT -5
I was thinking a or  would be better i'm running a  now and it works great |
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Post by llib on Mar 27, 2013 11:56:26 GMT -5
As i have hit 48 mph one time when i raced a friend on his 06 zuma he was so mad that he is selling it
that is why i ordered 2 cy50-t3's one for me and one for him and doing the 100cc kit
I can't wait to see how my atm50 with a 80cc kit will do in a race vs a cy5-t3 with 100cc kit
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crank as well as larger cylinder
would be better i'm running a 
now and it works great