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Post by albongo on Dec 12, 2014 11:37:49 GMT -5
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Post by Clank on Dec 12, 2014 13:07:19 GMT -5
Well you've come to the right place for answers to your scooting questions brother.
:popcorn:
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Post by tiny on Dec 12, 2014 13:27:00 GMT -5
Go slow take your time and triple check every time and enjoy. If in doubt ask and someone here will help.
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Post by birdman on Dec 12, 2014 15:52:45 GMT -5
  To thee addiction!! bwahahahabwahahaha |
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Post by albongo on Dec 12, 2014 16:36:57 GMT -5
Go slow take your time and triple check every time and enjoy. If in doubt ask and someone here will help. I could have done with this advice a few weeks ago.  |
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Post by tiny on Dec 12, 2014 16:49:26 GMT -5
Hind sight is only 20-20 and help is always here when ya need it.
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Post by albongo on Dec 12, 2014 16:57:00 GMT -5
So I fitted a cheap ebay 80cc (72cc) bbk. I used the guide on this forum and had no problems, or so I thought....  I also fitted an exhaust www.ebay.co.uk/itm/49cc-50cc-Chinese-Scooter-Exhaust-System-Kit-Muffler-Silencer-Honda-GY6-Engine-/191426283084?pt=UK_Motorcycle_Parts&hash=item2c91e5464cand a Chinese cone in filter. The install went fine. She was difficult to start post procedure but I expected that. When she did start she ran really bad and started bogging when throttling above 50%. I changed the main jet from a 90 to an 85, better but still bogging so I dropped it again to an 80. This sorted the bogging but she was really slow and low on power. I put her to bed for the night and did some research. On this forum I think I read that someone had installed their cam 1 tooth off, the following day I checked and I had done the same. I set the cam properly and could feel such a difference. I got her out a few days later to take her for a break in ride, but couldn't get her started, I trouble shot using this forum but no luck. I think the starter motor has gone and the kickstart was broken when I got her. I've order both to be replaced. I've also ordered compression test kit as I figure I will need one during the future trouble shooting. I did notice oil on top of the piston so I think the rings aren't gapped properly so a set of them are coming aswell, now I have feeler gauges. just waiting on the postman now!  |
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Post by albongo on Dec 12, 2014 18:05:38 GMT -5
At the same time as the bbk install I purchased an impact wrench. My intention was to upgrade the variator, clutch and belt as a squeak/whine could be herd when pulling off. I purchased a performance clutch, which as far so I can tell by looking at it appears stock but painted black/orange. It took me ages to get the nut off the clutch  I'm replacing the stock contra spring with a 1500rpm.  The vairiator came with 8g rollers but I purchased some 6g Dr pully sliders to install ![]()
I wanted a keeler belt but ordered the wrong size  so I went with a straight replacement.
 When she did run on the new set up, there was no squeak and the takeoff was better but at this time I can't tell if it's due to bbk or CVT! |
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Post by Mrx2002 on Dec 12, 2014 18:06:18 GMT -5
Looks good man! Nice scoot for a nice price too!   |
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Post by albongo on Dec 12, 2014 18:08:42 GMT -5
Since this upgrade and subsequent failings I have learnt the wonderful advice: Only upgrade one thing at a time so you can see the results!!! |
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Post by birdman on Dec 12, 2014 18:21:59 GMT -5
Got a fast start. Me likey! Im all about the performance upgrades. Keep going
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Post by niz76 on Dec 12, 2014 18:24:01 GMT -5
Good fun! Seems that after adding the cone filter you'd need to upjet as they flow more air than stock air box. More air = more fuel needed.
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Post by albongo on Dec 13, 2014 16:27:39 GMT -5
Good fun! Seems that after adding the cone filter you'd need to upjet as they flow more air than stock air box. More air = more fuel needed. Niz, I upjetted from a 78 to a 90 but experienced bogging at 50% throttle and up so dropped to 80 to cure it. I think this maybe due to having the cam set one tooth off correct! I have rejetted back to an 85 as I don't want to be lean and am just waiting on some parts to trial the set up. Looks like I won't have everything till Monday moring now.   |
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Post by niz76 on Dec 13, 2014 16:30:44 GMT -5
You're tuning now brother! Uggh I hate waiting on parts it's like torture!
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Post by albongo on Dec 15, 2014 16:03:40 GMT -5
So all my parts turned up today. I spent the morning changing the top 2 piston rings, which I checked the gap of using the calculator in the tech section and installing the new starter motor and kick start gear. Then I just had to put her back together. After last time I made sure the cam was properly aligned.  Triple checked the valve gap (I'm learning). Once all the panels were back on I attached the battery and tried to start her. It took about 10min but eventually she roared into life.  I grabbed my lid and jumped on her for a spin.  I managed 200 meters before a metallic tapping suddenly started and then became some horrendous noise, I thought I had killed the engine. Walking the scoot back I was convinced I had killed her. Thinking about it the noise seemed to come from the CVT. I took the cover off and found this:   My Vairiator nut had come loose and the plastic cooling fan had escaped from its housing! I couldn't see any damage so I reinstalled everything using blue locktight and allowing my impact wrench to 'thunk' the nut back on at least 20 times. I also removed the clutch nut and did the same, I wouldn't want that coming loose... That was the end of my riding, 200 meters but she did start! Now I have to wait till Wednesday to see if she will start again so I can take her for a ride. |
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