SOHC.co.uk Forums > Project Board
1967 CB450K0 Black Bomber Rebuild - By Royhall
royhall:
Hi Mo. Did you ever get the electronic ignition working? The hanging idle is often caused by worn out springs in the ignition advancer. Very common problem. Also check the clutch cable isn't fouling the throttle as it's close to it at the carb end. Did you fit the springs in the vacuum chamber?
royhall:
Forgot to say, the kits I have ordered are made in Taiwan by a company called Daminedin and they have really good reviews. The dodgy items that people are struggling with are the Keyster kits. I also wonder if people are assuming that all 450 carbs are the same, there are at least 4 different versions of these carbs (not including the 500T version) and only a kit made specifically for that carb type will fit correctly. The ones I have ordered are specific for 14H and 14L only. I'm not surprised people are having problems with 450 carb kits. I have a chart somewhere detailing a lot of the changes, I will look for it tomorrow and post it here.
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mo goldie:
Hi Roy
yes the electronic ign is all on and working ok, the springs were all checked when I done the ign so they are ok and the clutch cable is not in the way...... the spring in the Vacuum chamber they was None in them so No I have Not got any of them Pity I would have put some in as I say if it came with them :-[
the carb kits I got were from Wemoto and had the Needles with clips so set them at 3 up from bottom and the air screws were as I said set with a colortune and think they were out about 1 turn out in the end ...... wonder if Ashley had some kits would have got them :(
but the other thing is the charging as I don`t think it is as the battery after using the E/start a few times brings the Battery down...... Not sure how to check it as I don`t think by putting a meter across the battery tells me anything so don`t know how to check out the charging system ..again pity you Boy`s were Not anywhere near me for a look at if you know what I Mean.
royhall:
For the charging issue have a look here.
https://r.tapatalk.com/shareLink/topic?url=http%3A%2F%2Fwww%2Esohc%2Eco%2Euk%2Findex%2Ephp%3Ftopic%3D25561%2E0&share_tid=25561&share_fid=50581&share_type=t&link_source=app
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AshimotoK0:
--- Quote from: royhall on March 04, 2024, 06:45:24 PM ---Forgot to say, the kits I have ordered are made in Taiwan by a company called Daminedin and they have really good reviews. The dodgy items that people are struggling with are the Keyster kits. I also wonder if people are assuming that all 450 carbs are the same, there are at least 4 different versions of these carbs (not including the 500T version) and only a kit made specifically for that carb type will fit correctly. The ones I have ordered are specific for 14H and 14L only. I'm not surprised people are having problems with 450 carb kits. I have a chart somewhere detailing a lot of the changes, I will look for it tomorrow and post it here.
Sent from my Pixel 7 Pro using Tapatalk
--- End quote ---
What are the significant differences Roy? Could it be that they are related to the K1 and 5-speed engine components/characteristics? I would have thought that the needle and it's associated jets could be used on the later carbs and therefore closely match the original K0 engine characteristics. Problem is, I have a few K0 carbs (and 500T ones) but no later ones to compare the differences.
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