VM24 SS Carb Settings (Straight Pipes & Pods)

Just wondering if anyone could quickly give me a rough suggestion to all of these, to work with straight pipes & pods. My elevation is 577m (or 1900 ft) above sea level. I have a 1977 KZ650B.


HERE IS AN UPDATED LISTING:

Float Height: 30 mm
Needle Height: __ 2nd clip from top ___
Main Jet: 102.5
Pilot Jet: __STOCK___
Needle Jet: __ No idea, the only one in the rebuild kit _______
Screw: _ 3/4 (+/- 1/ turns out____


Also, to sync the carbs properly - do use only slide height to adjust? I was thinking that slide height is the rough tuning, and pilot screw in the fine tuning. Of course, adjusting the pilot screwed up my other sync's.


WILL POST ANOTHER VID TO SHOW HOW BIKE IS RUNNING NOW, FOR FURTHER ADVICE. The pilot screw doesn't seem to do much in terms of syncing, so I have just adjusted the slide height.

Forgot the vid link.

Yes it's chopped, but it was wrecked before. So now at least it gets a second chance.

can you post a pic of carbs?...i thought i saw ribs on them and if so, i dont think they are 29's...it will help you big if you know EXACTLY what carbs you have and then you can determine jets, needle height, and so on....kinda sounds like the floats arent adjusted right

can you pm me your email, I'm in the shop on my iPhone, and can't post a pic from it. I would go in the house but it about a 15 minute drive away.

I measured the inside diameter of the engine office, and it's 26 mm. My pods say 39 mm if that helps. The carbs also say mikuni kogyo, but no model numbers.

www.google.ca/m/search?site=images&sourc...q=26mm%20mikuni#i=31

they look just like this, but mine have ribs on the tower portion, not sure what that part is called.

I also have jet sizes ranging from 90-102.5.

Sircraigery wrote:

can you pm me your email, I'm in the shop on my iPhone, and can't post a pic from it. I would go in the house but it about a 15 minute drive away.

I measured the inside diameter of the engine office, and it's 26 mm. My pods say 39 mm if that helps. The carbs also say mikuni kogyo, but no model numbers.

they are probably vm26ss........could be 24,s

posting a pic for him....i will defer to the 650 guys as i am not sure......gotta resize it in faststone.....

keith1 wrote:

posting a pic for him....i will defer to the 650 guys as i am not sure......

run some decent pods also....those things are junk in my opinion.......

Hey, I'm a uni student ha ha. $12 specials

I will when I get more cash, probably go with k&n's or something. They are good on my raptor and the silverado.

Any ideas anyone, pretty sure also that they are 26's.

Thanks again for posting them pics for me man.

not a problem.....just trying to help you get the answers you need....

I found that running 102.5 jets, 2nd needle clip, 1mm gap for the sliders (engine side).

As for the floats, I adjusted them to 23mm (from the gasket to top of floats).
We also sync'd them with a differential pressure meter by adjusting individual slider levels when the engine was running. Pilot screws about 1.5 turns out.


Worked fine, and starts in 1/2 a kick without coke (warm at least, haven't tried it cold yet). It's a bit rich still, but no lag in throttle response.

Hope this serves for anyone in southern Sask with these carbs.