Carb bore reducer

[Rich Junker]

Has anyone came up with a idea to reduce the bore on a smooth barrel carb? I have a 12mm KRE carb that i would like to reduce to 11mm.
It's probably just easier to buy another carb but i thought i would ask.
Thanks.

 

[mark ham]

what about reducing it with a piece of brass tube.

 

[Rich Junker]

what about reducing it with a piece of brass tube.

Yeah i thought about that if i can find a piece that would fit snug. Would you put it before the barrel or after the barrel?

 

[Mike Hughes]

I have done it with brass tubing. I ran it all the way thru the barrel. I chamfered at both edges of the barrel for better flow.
Mike

 

[ChrisCapaldi]

OS sells a reducer for the 9B carb. I think it just slips into the barrel but I'm not sure.
Chris

https://www.activepowersports.com/os-engines-28281210-carburetor-insert-9b-g3627/

 

[Rich Junker]

OS sells a reducer for the 9B carb. I think it just slips into the barrel but I'm not sure.
Chris

https://www.activepowersports.com/o...of the barrel for better flow. Mike [/QUOTE]

OS sells a reducer for the 9B carb. I think it just slips into the barrel but I'm not sure.
Chris

https://www.activepowersports.com/os-engines-28281210-carburetor-insert-9b-g3627/

OS sells a reducer for the 9B carb. I think it just slips into the barrel but I'm not sure.
Chris

https://www.activepowersports.com/os-engines-28281210-carburetor-insert-9b-g3627/

I wonder what the ID is with the reducer. Thanks for the info guy's.

 

[Rich Junker]

I wonder what the ID is with the reducer. Thanks for the info guy's.

I found the info on another site. It reduces it to .450
Thanks again.

 

[mark ham]

I have done it like Mike says, all the way thru the barrel, never had any problems

 

[Rich Junker]

I have done it like Mike says, all the way thru the barrel, never had any problems

Yeah i think i am gonna try that with 15/32" brass tubing and see how it fits.
Thanks Mark.