Todays Project - What did you do today?

[f350ca]

A friend is having trouble with the Ford Industrial engine in his log skidder. Im giving him a hand to get it patched back together. Among the problems, when we did a pressure test on the cylinders one of the exhaust valves were leaking bad. He pulled the head and removed the offending valve. The valve was good but the seat was burnt in one area. Decided to regrind the seat for him, thought I'd post a couple of photo's, don't think this sort of work is done much anymore.
A bit of background on the tooling.
Tom, a grumpy old bugger (would have fit in great here) had a garage in the village, I'd drop in regularly to harass him. One day out of the blue he says Inglehart, you need that valve grinding equipment thats out in the shed (I'd never seen it). What the heck for I tell him, he chuckles, your the only one around here that might ever figure out how to use it. So home I go with a K Olee valve grinder and Black and Decker seat cutter, complete with all the guides and stones. Its been sitting for a few years here, Tom is long gone unfortunately but his tools live on.

This jig cuts the wheel to the proper angle for the seat in the head.

The wheel threads on to the arbour and a hex drive on the motor turns it. A small diamond does the cutting.

The set comes with a set of mandrels that expand into the valve guide in the head to center the arbour and keep it square. Drop the arbour onto the mandrel and start grinding.