T
the_journeyman
Guest
I read that link, but couldn't get a handle on making it. Maybe I should look again.
JM
JM
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Required reading for all forum users!!!
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The way I read it it's very simple. Just a board, 4 tubes, 4 smaller tubes & some connectors + some old oil.
Depends how valuable your time is I guess. Is there nobody on here near you that you could tap up to take it over too for a quick test, I don't *think* it takes too long.
Dan
Depends how valuable your time is I guess. Is there nobody on here near you that you could tap up to take it over too for a quick test, I don't *think* it takes too long.
Dan
The carbs must be synched well to accurately re-jet.
Otherwise, you may find yourself re-jetting for what may be a vacuum related issue.
The slow to return idle (as long as the throttle plates are operating smoothly/correct throttle cable action) is generally a lean condition but a poor synch will aggravate things.
The slight stumble could be caused by a poor synch. Basic tuning, which includes synching, really must be done so you know any problems are jetting related.
Hard to say without being able to ride the bike, but a "stumble" could also be poor throttle response. Very often with the CV carbs, you need to drill out the vacuum orifice to the diaphragm/piston chamber to improve throttle response. Sometimes lighter springs will fix it too.
Stock air jet may be a problem too.
I'd test at 1/3 throttle and read the plugs before changing jet needle position. But like I said, without a balanced synch, you may get uneven plug reads that just add to frustration.
Otherwise, you may find yourself re-jetting for what may be a vacuum related issue.
The slow to return idle (as long as the throttle plates are operating smoothly/correct throttle cable action) is generally a lean condition but a poor synch will aggravate things.
The slight stumble could be caused by a poor synch. Basic tuning, which includes synching, really must be done so you know any problems are jetting related.
Hard to say without being able to ride the bike, but a "stumble" could also be poor throttle response. Very often with the CV carbs, you need to drill out the vacuum orifice to the diaphragm/piston chamber to improve throttle response. Sometimes lighter springs will fix it too.
Stock air jet may be a problem too.
I'd test at 1/3 throttle and read the plugs before changing jet needle position. But like I said, without a balanced synch, you may get uneven plug reads that just add to frustration.
T
the_journeyman
Guest
Ok, I'll work out something about synching, maybe a small shop locally can give me a hand or something like that. I did drill the slides per Dynojet's instructions, so the vacuum orifice has been enlarged from stock ~
JM
JM
T
tone
Guest
Correct :-D one is measured by the actual size of the hole & the other by the flow rate ! ie a 138 DJ jet is NOT the same size as a 138 mikuni jet the seat where the needle sits is also a different shape & the needles themselves have a different taper
mixing the 2 types will have you chasing your tail for ages (from experiance)