Originally Posted by dutch1
Another stab in the dark--it sets the proper face angle when grinding the valve.
I think Dutch the other "seasoned" one got it......
My set is packed away right now but I found these pics on the net, This tool was a must back in the day to re-face/set stone angle for proper valve "grinding".
You would remove the drill/stone assembly from the centering guide in the block/head (above pic) and slide it over the center vertical shaft of the tool I posted, Adjust the desired angle and the pointed adjustable cutter has a diamond tip.....
Since this was my grandfather's tools I figure their in the mid 40's maybe early 50's......
Originally Posted by piston slapper
You never learn anything until you admit you don't know it all...
"Why go out preserved when you can go out beat up, worn out, sliding in sideways screaming, Holy Sh!t What A Ride" !!!