@@colinsharp1314 I'm glad I chose the original stuff, I don't think it's worked hard, just been left to fester for 40 years. DVLA records say it was last taxed in 1978 !!
Hi! I have a 1980 Honda cb125s with a keihin carb, but I think I’m not going as fast as I should because of my carb tuning/setting, what is the recommended setting if you don’t mine? I feel I get to 30 mph and if I throttle it more the engine will feel to pushed
I am not a carburettor expert, I have only built one so far and it has taken weeks to tune it. If you are only making 30 miles an hour before the carburettor struggles it could be main jet ? Worn needle ? Blocked jet ? Float hight ? Or as I discovered, engine timing . I would find a local expert and seek his or her advice. Sorry I can't be more help but I'm new to this too !
Hi Richard, currently having an issue with my recently purchased CB125s where it seems to be running very rich and smokey. What size jet do you have on yours? Mine is a 98, but seems to suggest in the manual it's a 105. I have a 105 from the Keyster kit but just wanted to check what yours has presuming its stock! Cheers, Joe
After some googling I have discovered that the UK bikes were initially fitted with a #105 jet but changed to a #98 from serial number 1010792. I guess my #98 must have had a dodgy cleaning job at some point as the hole is visibly larger than the #105! Fitting the 105 has gotten rid of the smoke! Perhaps I will get a genuine Keihin #98 jet and see how that performs.
Hi, sorry for the late reply. I honestly don't know what the jet is in mine. I cleaned and reused the original one which only has 3500 miles on it. However I do have the needle at maximum lean as mine was running rich.
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Your mate is right Richard I bought one and had a load of trouble with carb ended putting all old stuff back in . Loving the vids to mate
That's good to hear it from two people. Did your carburettor work well once you replaced the the original equipment ?
@@richardjweeks
Yes it was great I had a lot of trouble wrong jets sizes aswell and didn't realise when fitting
@@colinsharp1314 I'm glad I chose the original stuff, I don't think it's worked hard, just been left to fester for 40 years. DVLA records say it was last taxed in 1978 !!
Did you ever consider a small soda blaster, I’m thinking about an Air Boy for the alloy clean up ?
I only used the sofa blaster on the case, find and head, fancied the ultrasonic cleaner for the carburettor
Hi!
I have a 1980 Honda cb125s with a keihin carb, but I think I’m not going as fast as I should because of my carb tuning/setting, what is the recommended setting if you don’t mine? I feel I get to 30 mph and if I throttle it more the engine will feel to pushed
I am not a carburettor expert, I have only built one so far and it has taken weeks to tune it. If you are only making 30 miles an hour before the carburettor struggles it could be main jet ? Worn needle ? Blocked jet ? Float hight ? Or as I discovered, engine timing . I would find a local expert and seek his or her advice. Sorry I can't be more help but I'm new to this too !
Hi Richard, currently having an issue with my recently purchased CB125s where it seems to be running very rich and smokey. What size jet do you have on yours? Mine is a 98, but seems to suggest in the manual it's a 105. I have a 105 from the Keyster kit but just wanted to check what yours has presuming its stock! Cheers, Joe
After some googling I have discovered that the UK bikes were initially fitted with a #105 jet but changed to a #98 from serial number 1010792. I guess my #98 must have had a dodgy cleaning job at some point as the hole is visibly larger than the #105! Fitting the 105 has gotten rid of the smoke! Perhaps I will get a genuine Keihin #98 jet and see how that performs.
Hi, sorry for the late reply. I honestly don't know what the jet is in mine. I cleaned and reused the original one which only has 3500 miles on it. However I do have the needle at maximum lean as mine was running rich.
Thanks for the reply, I will try leaning the mixture right off with the needle on the #98 jet.
Lighting . . . ugh Great content.
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