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Post by blackbag on Jun 26, 2014 2:27:02 GMT -5
Well I got the 20mm carb today and swapped it in. Has a 91 main and not sure what the pilot is because guy that sold it to me didn't have the spec on it. It worked perfectly though with proper stall when screw was turned all the way in and great idle at 2.5 out. I'm guessing pilot is below the 35 size that was in the big carb. She now starts up with ease on every push of electric start button without needing any throttling. Took her for the first spin and hit 30 with ease
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Post by blackbag on Jun 24, 2014 13:18:29 GMT -5
Ah and there's more. His response after I told him it does make a difference was that At idle its not running at high speed so it doesn't make much difference. All I could think is yeah because we are on scooters and we're never sitting at idle for long periods of time. (sarcasm intended)
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Post by blackbag on Jun 24, 2014 13:03:54 GMT -5
 The verdict is in. Caked with soot on a new plug. That's with running it at idle maybe 6x for about 5 minutes each run. |
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Post by blackbag on Jun 24, 2014 12:13:02 GMT -5
I'm guessing you'd at the very least need to get the ignition repaired so you have an electric current to start it up. Maybe you could hot wire it until you replaced it.
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Post by blackbag on Jun 24, 2014 11:18:55 GMT -5
So I had ordered a 20MM carb as a backup plan to the problems I'm having with the 24mm carb and today I send a message to the seller asking for the pilot size because it's not listed on the ad. The response was "We don't know. The main jet is a # 91. The pilot kit does not make much difference, as long as it will idle."
Are you friggin kidding me? I thought I was the dumb one when it comes to this stuff. Apparently I've got competition!
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Post by blackbag on Jun 24, 2014 10:43:49 GMT -5
Ok well gotta love that different websites say 2 different things. 1 says if the mix screw is all the way in and doesn't stall (remains idle) you're too lean and another says too rich. !? I'm going to pull the plug. That should tell me definitively I hope.
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Post by blackbag on Jun 23, 2014 21:07:05 GMT -5
Yeah throaty that's what I'm looking for. Maybe quiet wasn't the right word to use. Deeper tones like how a flowmaster exhaust can be at idle and lower rpms. I'm kinda digging this pipe by Nob1. Jump to 1:14 in this video it has an interchangeable tone. I like how it sounds when they switch it to DB killer.
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Post by blackbag on Jun 23, 2014 18:12:22 GMT -5
joecruise Its been a b!tch to get it into a state where its running and I'm not comfortable yet with the stability of the engine to actually ride it. With that said I've seen reports of hitting over 55.
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Post by blackbag on Jun 23, 2014 18:05:14 GMT -5
alleyoop I think we were coming across from 2 different points. My intent was trying to get it into a state that would enable my daughter to start it right up with no throttling needed. To do that it seems to require me giving it a little more gas/air then what it has in the current idle position and if I were to turn the idle screw in enough to get it to that point it would be set way too high. As it currently stands even with a slight turn of the idle screw it seems to "jump" into a very high idle. After reading a bit more I'm actually thinking its too lean because when I did have it in a very high idle state last night and turned the mix screw all the way in it didn't cut out. I'll make another video after work and show you what I mean.
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Post by blackbag on Jun 23, 2014 13:58:10 GMT -5
As an FYI, I also removed the spacer between the carb and the head. Not sure why that makes a difference but I saw Millsc had done it on his so I figured I'd give it a try.
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Post by blackbag on Jun 23, 2014 13:46:27 GMT -5
Your missing my point. If I were to turn the idle up to the point where it starts it would have a very high idle (well over 1800RPM). Throttling it up is needed to start but once it fires I can release the throttle and it idles fine. The other thing I noticed when I was adjusting the fuel mix is that if I turn the screw out from its present point it becomes air starved (bogs) when I give it any throttle so I think it is where it needs to be. Overall I think this 24mm is just not right for running this thing though. I'm probably going to switch back to a smaller carb like a 20 and jet it at #35 for pilot and #  or #  for the main. For now though at least I have it running so I can get some break in time on it so I'm happy with that. |
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Post by blackbag on Jun 23, 2014 11:12:46 GMT -5
I think if I put a little bit larger pilot (#38) I should be good?
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Post by blackbag on Jun 23, 2014 2:30:01 GMT -5
Ok well we got the 52mm BBK running but damn its loud! So what do you recommend to make it purr without giving up performance? I'm looking for that "sleeper" effect. Purrs like a kitten but moves like a cheetah!
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Post by blackbag on Jun 22, 2014 23:41:56 GMT -5
Well I finally figured out the right combo to get her to start. Requires a slight twist on the accelerator to get it to start. Pain in the arse to dial in the air mixture. I also replaced the plug with an iridium which I think helped get a stronger spark to fire.
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Post by blackbag on Jun 22, 2014 17:54:28 GMT -5
220 CCA is what it took to turn my 52mm over without issue. I believe millsc ran a 230cca on his.
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or #
for the main. For now though at least I have it running so I can get some break in time on it so I'm happy with that.