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crank !
by: JerryScript - Nov 29, 2014 22:48:57 GMT -5
geh3333 likes this
Post by JerryScript on Nov 29, 2014 22:48:57 GMT -5
Would a small stroker, like this one be a bad thing? uniquegy6.ecrater.com/p/20208163/hoca-gy6-stroker-crank I mean no boring and more power. I don't see the down side. Changing your crank, even with a stock one, you still need a new set of rings and a new cylinder sleeve. Might as well get more POW wile your at it, I have a way to get around buying new rings etc. If you remove the nuts holding the head and cylinder on you can then turn the crank so that the piston is at the bottom of the cylinder then with the cylinder and head loose on the studs you can turn the crank so that instead of the piston rising in the cylinder it will force the cylinder and head up the studs exposing the bottom of the piston . in this position I should be able to detach the piston from the crank leaving the piston in position .as long as the piston doesn't get knocked out of place I can reverse the process attaching the piston to the new crank after I slide the cylinder and head back down the studs. This process if done right will ensure that the rings are in the same position with no need for any honing and new rings. Good idea. Once you get the piston exposed enough, you could wrap a hose clamp around it and the bottom of the jug, holding it in place. Might need to use a bit of rubber around the piston to match the thickness of the jug neck, but I think it could all work out and make your crank job a bit easier. |
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crank !
by: geh3333 - Nov 29, 2014 22:56:27 GMT -5
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Post by geh3333 on Nov 29, 2014 22:56:27 GMT -5
I have non stokers comming from China they are not branded NCY I will be checking them when they get here . I wonder if your cdi could be stressing you starter clutch . John What do you mean by the cdi stressing the starter clutch ? Also while riding today I noticed sometimes when I came to a stop " at a light or sign " the sound would stop . it didn't just get quieter , because at some stops I would hear the noise and then the noise would just cut out completely , and would start again sometime after I takeoff . I really can't hear it while moving due to my loud exhaust and full face helmet , plus the wind . I'd be very happy to find out it is the starter clutch making the noise . I'm gonna have to record a video of it with and without the noise . |
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by: geh3333 - Nov 29, 2014 23:01:45 GMT -5
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Post by geh3333 on Nov 29, 2014 23:01:45 GMT -5
I have a way to get around buying new rings etc. If you remove the nuts holding the head and cylinder on you can then turn the crank so that the piston is at the bottom of the cylinder then with the cylinder and head loose on the studs you can turn the crank so that instead of the piston rising in the cylinder it will force the cylinder and head up the studs exposing the bottom of the piston . in this position I should be able to detach the piston from the crank leaving the piston in position .as long as the piston doesn't get knocked out of place I can reverse the process attaching the piston to the new crank after I slide the cylinder and head back down the studs. This process if done right will ensure that the rings are in the same position with no need for any honing and new rings. Good idea. Once you get the piston exposed enough, you could wrap a hose clamp around it and the bottom of the jug, holding it in place. Might need to use a bit of rubber around the piston to match the thickness of the jug neck, but I think it could all work out and make your crank job a bit easier. I'll def do that , that's a great idea . then I won't have to worry so much about knocking the piston out of place . |
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by: tvnacman - Nov 29, 2014 23:12:25 GMT -5
Post by tvnacman on Nov 29, 2014 23:12:25 GMT -5
The big bore kits create more compression so they make it harder to crank the engine over . Then you add the fixed advanced timing cdi . It takes its toll on the starter clutch every time you crank the engine over and it fires before tdc all the stress is on the starter clutch . Do you get kick backs while cranking to get it started ? I could be wrong here and it could be coming from the crank .
John
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crank !
by: geh3333 - Nov 29, 2014 23:18:51 GMT -5
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Post by geh3333 on Nov 29, 2014 23:18:51 GMT -5
The big bore kits create more compression so they make it harder to crank the engine over . Then you add the fixed advanced timing cdi . It takes its toll on the starter clutch every time you crank the engine over and it fires before tdc all the stress is on the starter clutch . Do you get kick backs while cranking to get it started ? I could be wrong here and it could be coming from the crank . John You are correct , I do get the often kick back while cranking . it will sometimes do it a couple times in a row and I have to let off the ignition and hit it again. |
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crank !
by: geh3333 - Nov 29, 2014 23:21:14 GMT -5
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Post by geh3333 on Nov 29, 2014 23:21:14 GMT -5
The big bore kits create more compression so they make it harder to crank the engine over . Then you add the fixed advanced timing cdi . It takes its toll on the starter clutch every time you crank the engine over and it fires before tdc all the stress is on the starter clutch . Do you get kick backs while cranking to get it started ? I could be wrong here and it could be coming from the crank . John You are correct , I do get the often kick back while cranking . it will sometimes do it a couple times in a row and I have to let off the ignition and hit it again. sometimes after the kick back I'll get a bad sound like the clutch is slipping or just spinning without turning the engine over . it sounds like a clanking spin. |
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crank !
by: JerryScript - Nov 30, 2014 0:30:51 GMT -5
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Post by JerryScript on Nov 30, 2014 0:30:51 GMT -5
John has your answer, his advancing angle cdi. It starts non-advanced, preventing kickback, and increases the angle of advancement as your rpms increase.
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by: xyshannen - Nov 30, 2014 2:18:58 GMT -5
Post by xyshannen on Nov 30, 2014 2:18:58 GMT -5
I thought that removing the cylinder jug without dropping the piston might be possible but wasn't sure. Still...more POW! lol
John's CDI is awesome BTW.
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crank !
by: geh3333 - Nov 30, 2014 3:46:50 GMT -5
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Post by geh3333 on Nov 30, 2014 3:46:50 GMT -5
That would help with the cold starts . I should have mentioned the only time I get the kickbacks and the starter clutch slippage " with the clank sounds " is during cold starts . after the engine warms up the scoot starts just fine and with a very quick push of the ignition. My question would be did the advance timing cdi with the bbk cause the starter clutch to start going bad which is now making noise on and off as the engine is running ? Actually i shouldn't ask if this is what's happening but if this could be what's happening and has anyone ever had this type of problem that you know of ? Also with the way the noise is coming and going does does it seem more like a crank issue or something else ? The problem is the only other thing it could be " considering where the noise is coming from " is the starter clutch . I know it will help out a lot when I get a video of the noise posted , so I'll try to get it recorded and posted sometime 2moro.
I do appreciate all the replies and info all have given me and I know you can only help so much with the info I've given so far , so I'll be sure to get that vid up .
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by: tvnacman - Nov 30, 2014 9:41:13 GMT -5
Post by tvnacman on Nov 30, 2014 9:41:13 GMT -5
That would help with the cold starts . I should have mentioned the only time I get the kickbacks and the starter clutch slippage " with the clank sounds " is during cold starts . after the engine warms up the scoot starts just fine and with a very quick push of the ignition. My question would be did the advance timing cdi with the bbk cause the starter clutch to start going bad which is now making noise on and off as the engine is running ? Actually i shouldn't ask if this is what's happening but if this could be what's happening and has anyone ever had this type of problem that you know of ? Also with the way the noise is coming and going does does it seem more like a crank issue or something else ? The problem is the only other thing it could be " considering where the noise is coming from " is the starter clutch . I know it will help out a lot when I get a video of the noise posted , so I'll try to get it recorded and posted sometime 2moro. I do appreciate all the replies and info all have given me and I know you can only help so much with the info I've given so far , so I'll be sure to get that vid up . I have a better idea bring your scooter to me , we can check it together . Bring a camera so we can share what we find . You could gamble with just a plug and play cdi , but I think your starter clutch is on the way out . John |
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by: geh3333 - Dec 1, 2014 22:23:48 GMT -5
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Post by geh3333 on Dec 1, 2014 22:23:48 GMT -5
That would help with the cold starts . I should have mentioned the only time I get the kickbacks and the starter clutch slippage " with the clank sounds " is during cold starts . after the engine warms up the scoot starts just fine and with a very quick push of the ignition. My question would be did the advance timing cdi with the bbk cause the starter clutch to start going bad which is now making noise on and off as the engine is running ? Actually i shouldn't ask if this is what's happening but if this could be what's happening and has anyone ever had this type of problem that you know of ? Also with the way the noise is coming and going does does it seem more like a crank issue or something else ? The problem is the only other thing it could be " considering where the noise is coming from " is the starter clutch . I know it will help out a lot when I get a video of the noise posted , so I'll try to get it recorded and posted sometime 2moro. I do appreciate all the replies and info all have given me and I know you can only help so much with the info I've given so far , so I'll be sure to get that vid up . I have a better idea bring your scooter to me , we can check it together . Bring a camera so we can share what we find . You could gamble with just a plug and play cdi , but I think your starter clutch is on the way out . John Sorry I was sick as a dog yesterday and most of 2day. It would be nice to be able to bring it to NY and know for sure what was going bad , but unfortunately I'm not in the position to be able to leave for a couple days , so It seems I'm just gonna have to buy a new starter clutch and if the sound persists I'll have to replace the crank . when I comes to the starter clutch should I get stock or a high performance . |
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by: tvnacman - Dec 2, 2014 7:53:02 GMT -5
Post by tvnacman on Dec 2, 2014 7:53:02 GMT -5
I would suggest because the noise is only at start up , put a variable timing CDI , If it gets better I would order a starter clutch with the seal and gaskets for whatever comes apart to have on hand . you will need a flywheel puller and a starter clutch nut remover .
We can get the starter clutch changed in like two hours .
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