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The carb adapters.One for the airbox, one for the cylinder manifold. These are custom fitted to each carb, to assure they fit air-tight. They are the key pieces to allow this flat slide carb to fit the KLX250. The press fit operation is carefully controlled.



The carb body mounted in the lathe and being bored.



All the way through. Then it's time to clean it of all dust and shavings, and blow all the passage ways clean. The adapters are pressed in, the carb re-assembled, and another 34mm is ready. Fun stuff.

 

Cool pics! Whose carb was lucky enough to be the model?

 

Its a extra carb I came up with just doing the mods ahead of time. It will be ready to ship when someone wants it.

 

I am glad to see it in the four jaw chuck Bill. I know awhile back you were going to try and take the carb out to 35mm, it might have been for Marty. I was just reading a post on thumper talk and someone on there had a tm33 that was bored out to 35mm, I was wondering how it went for you with the 35mm bore?

 

Hello Jeff,

I bored out a TM33 to 35mm as a trial for some one After boring the slide is a little loose in the carb. I am running that carb on my owne bike runs great but slide makes a little noise.

 

So I hear the Bill Blue carb is the hot set-up to run with the 331 kit. Do you buy the carbs ahead of
time and then modify and sell them when people contact you, or is it a made to order type of deal?
I realize jetting is going to be different for each persons riding local and specific bike mods. I am
getting ready to start assembling my 331 kit, I would also like to get the web cam "Larry Rossler grind"
cams as well. I am interested in getting a carb from you if possible. I live and ride in Michigan which
has a pretty standard elevation of 1400 feet (I think?!) What do you recommend?

 

Shadetree had some concerns about the flow of the 34mm carb on his 331 with cams. I would do some research before you commit to the 34mm. I don't want to take any business away from bill, but 34mm might not be enough.

 

Do you happen to know if he stuck with the 34 or did he switch to a different carb?

 

The carb isn't actually bored perfectly down the center, Bill must offset it just slightly. The lower surface of the carb's bore is just barely touched, otherwise the slide cutaway is affected. The carbs are a cast material, and they do vary just a little bit on the surfaces that Mikuni doesn't machine. Some carbs get a tiny clean-up pass along the floor of the carb throat, some don't get touched at all. This difference is less than a thousandth of an inch. Taking .020" off of a cast aluminum alloy bore, with an out of balance, funny shaped item such as this carb is a challenge. Bill indicates the carb in when he locates it in the chuck. The bore of the carb has to be straight and true.

 

maniac I just sent you a pm, didn't want to highjack this thread anymore than I already have.