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Post by camojeremy on May 5, 2014 18:50:01 GMT -5
What is the process for replacing the Cam Chain on a GY6 50cc just because I've never been that deep? I have also installed a Big Bore kit and my chain broke. Is there a beefier chain I should be using is was it just coincidence the chain broke after a BBK install?
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Post by alleyoop on May 5, 2014 19:14:34 GMT -5
You have to split the case and take the crank out to put on a new chain. And it could be that the BBK you put on made the chain to tight also how many miles the old chain had as well.
Alleyoop
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Post by camojeremy on May 5, 2014 19:26:03 GMT -5
is there a different chain i need or just a stock is fine just a new one. . . which side do i enter through? like i said i never have been that deep thats why i never changed the crank to a stroker. . .
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Post by millsc on May 5, 2014 21:25:14 GMT -5
You might as well do a stroker you have to take the crank out to change the chain.
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Post by camojeremy on May 5, 2014 21:39:39 GMT -5
I need to figure out how to tear it down far enough. . . my chain is coming tomorrow and im trying to put this on the road before i miss the season. lol
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Post by alleyoop on May 5, 2014 21:53:07 GMT -5
Here is a complete tear down and put back together of a GY6 from RICH on DOC: You won't have to do it all just the LEFT side and on the right side you will have to take the Variator off. Alleyoop scooterdoc.proboards.com/thread/6884/gy6-project |
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Post by camojeremy on May 6, 2014 9:42:34 GMT -5
That's good info thanks Ally!
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Post by camojeremy on May 6, 2014 9:44:35 GMT -5
Still though is there a beefier chain or is a stock one fine just coincidence stock one broke?
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Post by devo344a on May 6, 2014 10:25:38 GMT -5
I had the same problem it drove me nuts and if its breaking chains after a BBK its the head gasket if it had a metal gasket you have to put a metal gasket back on it or it tightens the chain to tight and breaks it the differance in the regular gasket and the metal one is enough to tighten the chain to much I even took the tensioner out and the chain is way to tight.
there isnt a better chain to buy for it I tryed everything and I broke 3 before i found out what it was and split the case 3 times to install it
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Post by camojeremy on May 6, 2014 14:55:57 GMT -5
Wow good see this is info I was looking for thanks guys only problem not is BBK install was last season chain broke didn't feel like fooling with it since season was out just opened it to see chain broke BUT I DO NOT remember anything about the gasket got a new one with BBK so I used it figure no need to keep.
But definitely something to ponder especially if it happens again. Thanks Guys
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Post by devo344a on May 12, 2014 8:24:34 GMT -5
If you put it together with the wrong gasket it will break again use a steel gasket if thats what it came with I broke 3 before I found this out after 3 complete teardowns to put a new chain on I was ready to junk it.
If your not sure when you put it back together get the head and cam bolted down and with the tensioner out take a screw driver and see how tight the chain is mine was like a banjo string I could bairly move it I even tryed not useing the tensioner Ithought it would strech some then i would put the tensioner back on and it still broke the only fix was the thin metal gasket
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Post by camojeremy on May 19, 2014 19:00:26 GMT -5
Ok so I got my new Cam Chain the other day and just got around to splitting the case and installing today. . . and the Chain IS TIGHT. . . . like mentioned above I do have metal gaskets in place. . . . I definitely don't want to have to tear this thing down again if i do i WILL junk this thing im soooo done with it. . . .so I dont want it to brake again but dont know what else to do....
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Post by devo344a on May 20, 2014 9:08:26 GMT -5
If its to tight to push down with a screwdriver threw the tensioner hole mine was so tight I could not move it more than 1/4 inch. When I put the metal gasket back on it gave me the slack I needed the only other way is take out the base gasket and use silicone it will give you a little more
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Post by urbanmadness on May 20, 2014 11:36:56 GMT -5
Did the bike break the chain when it was running? If so, check the valves and make sure it didn't bend them when it broke.
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Post by camojeremy on May 22, 2014 19:41:56 GMT -5
The bike just cut off and didn't start again.... So idk I mean I guess I doesn't break just sitting there.... Thanks I'll look...
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..BAD TO THE BONE..
