The Craftmans Shop > PowerSports
1954 Ford 850 Tractor w/blown Head Gasket (at the very least)
vtsteam:
What I liked about this drill was that it faced the end as well as the sides of the hole, acting like a reamer and drill at once.
vtsteam:
Measuring the bore. After hardening I had stoned all cutting edges, and the final drill was about a thousandth undersize -- but I figured I might gain that back when drilling the hole -- which worked out well. .350" was the target, and though not a critical dimension for this application, was nice to hit as intended. I'm now a great fan of making cutters like this for odd size bores. A lot faster than boring to size for a project like this. And it's repeatable for the future, in case I lose one of these little caps again. Just chuck it in the Jacobs and go.
vtsteam:
After drilling out the bore, I turned down the outside to .475" without removing the rod from the chuck:
mattinker:
Satisfaction ;--)
Regards, Matthew
vtsteam:
Then cut it off a little long with a hacksaw. Sorry to say I've had problems parting in my lathe in the past, and I didn't want to take a chance on this part.
Unfortunately also my 4 jaw chuck was at it's limit turning the half inch rod. The jaws won't close much tighter, so I had to switch to the 3 jaw to face the ends. But that wasn't a critical operation.I left the cap about .01" long to allow fitting exactly for proper clearance on the actual valve. I chamfered the top end and finally ran the top and bottom over an oilstone to smooth them down.
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