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Guest
Guest
I put the 110 main jets in. Spark Plugs look rich after the ride with the112.5's. Too late now I will fool with it again in the morning
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This sounds like a pilot problem not a main jet size issue.
The mains have no bearing on the lower speed. The pilot sits in a well that fills with fuel and is metered to small passages that go to the idle screw. There are 3 small orifices that are presented to the engine as the throttle plate moves off idle.
It seems you are not getting any love through this circuit then when the air intake picks up the slides come up and gas is let in through the mains.
Check one dumb thing: I had the wrong style of pilots for my carbs once. I installed 40 but they were open on the wrong g end. There are two styles and the correct ones have the tiny hole in the head not in the tip. Both styles are the same height and fit equally well.
Your description is what I experienced. It points to a dry pilot circuit. Of course you could have another reason but let's rule things out. And leave the mains alone for now.
The mains have no bearing on the lower speed. The pilot sits in a well that fills with fuel and is metered to small passages that go to the idle screw. There are 3 small orifices that are presented to the engine as the throttle plate moves off idle.
It seems you are not getting any love through this circuit then when the air intake picks up the slides come up and gas is let in through the mains.
Check one dumb thing: I had the wrong style of pilots for my carbs once. I installed 40 but they were open on the wrong g end. There are two styles and the correct ones have the tiny hole in the head not in the tip. Both styles are the same height and fit equally well.
Your description is what I experienced. It points to a dry pilot circuit. Of course you could have another reason but let's rule things out. And leave the mains alone for now.
G
Guest
Guest
I just took a test ride. This bike is running purfectly after putting in the 110 mains and that's all I did. Small adjustment to idle knob, idle was 2000 cranked it down a little below 1500 I like to Idle a little fast. My bike is stock except the Delkevik 4 into one exhaust and 110 mains. Why that fixed the 1500 to 3000 stumbling issue I do not have a clue. Doing one thing seems to effect everything on this bike. I think these bikes are engineered to run somewhat lean. early 1980's was a weird time 80MPH limit speedo bikes tuned down as if they were using all the Gas. I was flogging it hard, takes off like a bullet screems to redline. Thanks for the help everybody.
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Guest
Guest
My needles are shimed 3 washers. Plastic spacer removed I forgot that. Delveck exhaust stated,rejeting is not needed in most bikes. I guess if they have a 1000cc with slightly larger than 107.5 mains thats true.