1981 CB650C Carbs
Posted: Mon Sep 25, 2017 7:37 pm
Hi there,
This subject might have been discussed already but here I go again: Was given a free bike 1981 CB650C without carbs. Trying to make it a track bike for our rent-to-race program.
I put a set of Keihin V357-DF07 carbs on that I had laying around in the shop. Starts, idles but won't get past 1/2 throttle without sputtering. Played with different jets (110, 125, 130 mains) and needle positions. No change. It has some sort of "open" 4 into 1 exhaust on it and pod airfilter. Took the carbs several times apart to clean and inspect. Changed spark plugs, replaced both CDI boxes.
Unfortunately there are no OEM Honda carbs for this bike anywhere. Original parts number 16100-460-771.
Any chance that someone here figured this issue out? Could it be the ignition trigger which is also NLA 30300-426-154
Thank you,
Marc Beyer
OCD Custom Cycles and Auto Repair LLC
Kraut Racing
Santa Fe, NM
This subject might have been discussed already but here I go again: Was given a free bike 1981 CB650C without carbs. Trying to make it a track bike for our rent-to-race program.
I put a set of Keihin V357-DF07 carbs on that I had laying around in the shop. Starts, idles but won't get past 1/2 throttle without sputtering. Played with different jets (110, 125, 130 mains) and needle positions. No change. It has some sort of "open" 4 into 1 exhaust on it and pod airfilter. Took the carbs several times apart to clean and inspect. Changed spark plugs, replaced both CDI boxes.
Unfortunately there are no OEM Honda carbs for this bike anywhere. Original parts number 16100-460-771.
Any chance that someone here figured this issue out? Could it be the ignition trigger which is also NLA 30300-426-154
Thank you,
Marc Beyer
OCD Custom Cycles and Auto Repair LLC
Kraut Racing
Santa Fe, NM