Drill sizes for main jets ?

I need a drill bit size chart for Keihin main jets . Does anyone have one or
know a link to one ?
Thanks,
Iowa883

 

Can you buy drills in such tight increments? Don't know myself, but you've
sparked some curiosity. Also, will a drilled finish be smooth enough, or
will you have to chase it with a reamer?


--
Later,

Charlie

What do you call a fish with no eyes? A fsh.

 

Aren't jets also contoured somewhat, rather than being a simple
cylindrical hole drilled through a block? IOW, the hole in the
middle is something like the hole in a donut, not a straight thru
hole drilled through a piece of flat stock.

I could certainly be wrong, but I seem to remember reading that
this is why you couldn't get the exact flow characteristics of
a larger factory made jet by simply drilling out smaller jet to
the same sized hole.

 

I've never seen this. Every main jet, idle jet, I've delt with are simple
straight holes.
If a jet is not available in the size needed then a numbered drill is used
to enlarge the passage.
There's no reason to have a venturi shape in a jet.
B

 

You are correct on the main jet. Drilling such a main jet would be a bad
idea.