I decided to take the more logical step first, and machine a guide for drilling and reaming
out the worn poppet valve guide, then start on the poppet valve, as I found
a reamer that should work.
The old guide hole was worn out to almost .200, and the valve stem is .185 if I remember
correctly. I have a .202 drill bit, and a .209 reamer.
To date, I’ve had very little experience with little reamers.
Will a little reamer remove .007 of bronze material okay using
a tap holder, turning by hand? Not sure there’s room for a drill,
but perhaps using one would end up with a better bore?
Anyway, I ended up making a two part guide. I kind of “winged” it,
but after the fact, I was thinking I probably could have made it one piece.
I think it will work okay as is though.
Will ream it out tomorrow, and hopefully start on the new poppet valve.
Not sure I’ll solve any running issue with the motor, but at least
I’m getting some machining practice!
Prepare to be boarded!