It looks as though it may have been bored out, I've got a set like that.
They need to bored out slightly off centre- yours appear to be.
Measure it, mine have been bored out to 29.5mm from 28mm.
I've not fitted mine, that is near the bottom of a long, long list of things to do.
For a tweak people D shape the carb. Means you have to use plastic metal on the top part as it breaks through. Result is low end carburation retained - top end benefits from greater area
Yes you're right it has been bored out to 29mm horizontal and 29.5mm vertical.
mj, the slide is a number 4 if you have a spare I would appreciate it.
What do you make of the damage near the slow jet?
This carb is from a 2007 kx85, I was hoping to get another and use the pair on my valve but whatare the chances of finding another the same as this?
Maybe I should offer it to the off road crowd as an upgrade.
To run in a pair would it be better if both carbs had been bored out on the same machine?
What would you lot do with it?
cheers.
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