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Post by spudsmckinsey on Jun 21, 2015 16:56:15 GMT -5
I got it. Used a slightly different approach.
Thanks
I did post a full explanation in detail how I did it ....but now that reply is gone? Too much to retype.
Not sure what happened?
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Post by spudsmckinsey on Jun 21, 2015 15:33:32 GMT -5
I have the engine out and the rear nut off and the circlip removed. Tried tapping and PB blaster. Darn thing will not budge in the slightest. Wheel spins freely. Disc brakes, so it has nothing to do with brakes. Saw this thread where another chap had he exact same problem but he vanished without leaving a resolution.... linkAnyone have any fresh ideas? |
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Post by spudsmckinsey on Jun 21, 2015 15:18:36 GMT -5
OP never came back with a final resolution.
It is 6 months since the last post and I'm having the exact same issue.
Darn swingarm WILL NOT LET GO,
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Post by spudsmckinsey on Mar 25, 2015 8:48:26 GMT -5
I've seen basically two versions of "Big Valve Heads" offered.
One by ScrappyDog for about $130
and one by 02starrider (ebay) for about $35
Looking around forums, best I can tell the Scrappydog BVH has porting and the 02Starrider head does not.
But I'm not positive.
The general consensus is that without supporting port work, the budget Big Valve heads dont do anything.
But I am not sure and research hasn't really turned up any solid information.
Has anyone used the $35 big valve head on a BBK and what are your impressions?
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Post by spudsmckinsey on Mar 25, 2015 8:35:15 GMT -5
That should be one smooth motor.
I use the balance beads in my scooter tires but have never heard of anything like that for scooters.
How many beans did the professional balancing set you back if you dont mind my asking?
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Post by spudsmckinsey on Feb 14, 2015 22:39:54 GMT -5
Man, that really blows.
Sometimes these engines can't take the increased torque. Rod failures and crank failures can happen.
Always explain that to the customer ahead of time. In fact, put it in writing. Get a signature.
That said, did you test ride it? Did you replace the crankcase side gaskets? Did you take anything off other than the head and jug? Did you replace the oil pump?
Pictures would be great.
Sorry for your misfortune.
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Post by spudsmckinsey on Feb 14, 2015 19:16:47 GMT -5
Might be a dirty or worn float valve, allowing too much gas into the carb float bowl than then flows past the needle into the carb venturi --- some of which would perhaps end up not in the engine but on the black. But if that was the case i'd expect your scoot to be running pretty badly ... and you say it is doing well. the carb is fairly new. I wouldn't expect worn anything. I did take the cover off to change the main jet when I got it a month ago, but I didn't notice anything then but I also wasn't really checking. There's a lot of salt and sand on the roads, enough to slip on, so maybe something is clogged? It does seem like there is a slight accel lag sometimes. When it lags it boggs sort of or feels like it is vibrating harder, but powers through it in a second or less and overall performance is good. If it idles ok and is ok at 1/2 throttle and above, could the slow pilot jet be at play as well as the accel pump? |
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Post by spudsmckinsey on Feb 13, 2015 22:32:57 GMT -5
Lain, I also recently installed the 100cc (50mm, actually 83cc) BBK Did you do other engine mods? Big Valve Head, A9 cam, exhaust ?) I didn't do ANY other mods. I got better launch and hill climbing, but ZERO top end increase. I tried to scan through your posts for the info but gave up after about 5 minutes. My BBK came with a jet and I installed it but it wasn't marked so I have no idea what size it is. Some say it is a #  (standard supplied with 02Starriders kits) IIRC, I didn't get any hesitation like you did. But I did go to a #  main jet. My biggest problem was that the air box proved to be inadequate to supply air for the bigger piston. I also think the "100cc" BBK may desperately need the big valve head. Not sure yet. Just a theory I'm woikin on. |
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Post by spudsmckinsey on Feb 11, 2015 23:36:23 GMT -5
Hello,
It has about 100 miles on it now. I haven't rechecked the valves yet.
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Post by spudsmckinsey on Feb 11, 2015 23:25:28 GMT -5
Those 8 gram weights are the culprit I'm betting on. Try going down to 6 gram (I prefer sliders). Ok. When I got it, it had 10gram rollers. The 8 gram rollers I installed came with the BBK from 02Starrider. I'll order some 6 gram weights and try that. I thought heavier weights would tend to push the variator closed earlier, forcing the belt to have a larger radius up front making the scooter change to top end gearing earlier? Won't lighter weights cause it to stay in "lower gear" longer? Truth be told, my engine doesn't sound right to me. It seems to be limited. At higher RPM's it sounds choppy and rough like it's just not developing clean power. It may be that this motor is just not healthy. It may have too much power robbing vibration caused by main bearing wear and it's being aggravated by the 83cc piston. Just speculating. I'm also gonna try a different CDI and coil. I really need a tach. I don't think it's getting above about 6000 rpm. The other thing I need to do really badly is start the motor with the cover off and watch the belts as I rev it. |
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Post by spudsmckinsey on Feb 11, 2015 18:33:28 GMT -5
I never noticed a performance drop while using the BBK from scorpion products (the ebay seller you mentioned). I am running a brand new install now though, getting great performance, leaving cars behind at stop lights and they stay behind cuz of good speeds. What mods did you do other than the bigger piston? Cam? Big Bore Head? |
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Post by spudsmckinsey on Feb 11, 2015 18:32:31 GMT -5
Thanks again everyone.
Does anyone think the standard 49cc CDI might be affecting my top end?
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Post by spudsmckinsey on Feb 10, 2015 23:48:43 GMT -5
True, we do seem to have threads hijacked a bit from time to time. It would be best to post these sort of queries in the appropriate thread. I apologize! Thank you sir. I put the little icon underneath the Hijack warning to show it was posted with levity. I was kind of expecting a laugh from rcq...not so much a reprimand. You sir are a fair moderator. |
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Post by spudsmckinsey on Feb 10, 2015 18:38:53 GMT -5
It's been a couple of weeks now .... how do you like your pacifica?   |
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Post by spudsmckinsey on Feb 10, 2015 7:45:56 GMT -5
Thanks Jerry and Alleyopp. Good advice that will be followed.
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(standard supplied with 02Starriders kits)
main jet. My biggest problem was that the air box proved to be inadequate to supply air for the bigger piston. I also think the "100cc" BBK may desperately need the big valve head. Not sure yet. Just a theory I'm woikin on. 