yup!  always begin drilling with the diameter of the shank of the stud as
your refrence for a drill bit.  the knurled portion is going to offer the
interference fit for anti rotation purposes.   if too tight go up 1 size in
the hole.  just be carefull.
chuck.
-----Original Message-----
From Glen Byrns <grbyrns at ucdavis.edu>
To: spridgets@autox.team.net <spridgets@autox.team.net>
Date: Tuesday, December 02, 2003 2:16 PM
Subject: Re: Stud enlargement
>I did this conversion on my bugeye two years ago.  I bought the drill bits
>in appropriate sizes, then went back and bought the correct one, then went
>back and bought the REALLY correct one, then did the job myself on a drill
>press.  With the existing holes as a guide, its hard to drill far enough
off
>center to cause any problem. I drilled the drums to a clearance fit and the
>hubs to a tight interference fit .  I ordered the studs out of the NAPA
>catalogue and they came in the next day.  Perfect length.  The studs tapped
>in with reasonable force, pulled in tight with a lug nut.  No imbalance
that
>I can detect up to 100mph.  Two years of use (not racing) and no problems.
 
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