Mikuni Carb Identification Help

[villainous_gamgee]

I could use some help identifying my carburetors. I know they're Mikuni from the stamps on each carb, but the rest is a mystery to me.

Next to the Carburetor spec line in the owner's manual, the original owner wrote "29mm smooth bores." He also bored the engine to 73mm if that is any help.

Does Kogyo mean anything specific to which carbs I have?

How about the small 490 over 20 stamp?

 

[slayer61]

If 29mm smoothies, they're very desireable. Here's a link to some 29s for example.

https://www.ebay.com/itm/3140868276...1291&msclkid=305ec79aa90f18c6a348a35aacfac7ed

How many fuel inlets do they have? The 29 smoothies have 2 from what I remember. I traded a motorcycle for some in the 80s....

 

[Nessism]

Those carbs are not VM29 Smoothbores. They look like the stock VM26's, as used on 1000E bikes, with cable actuated choke.

 

[zed1015]

I could use some help identifying my carburetors. I know they're Mikuni from the stamps on each carb, but the rest is a mystery to me.

Those are not smoothbores.
They are stock Suzuki VM26 or possibly VM28's depending on the model..
They could of course have been bored out to 30mm maximum but that's not very common..

 

[KiwiAlfa156]

Not smoothbores. Stantard VM. Float bowls wrong. 29mm smoothbores have a large treaded cap that allows access to the main jet without removing the bowls.

 

[slayer61]

Thanks guys for the help. It's been decades since I've seen a set of 29mm smooth bores up close. We have Keihin CR Specials and Mikuni RS flat slides presently