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Sykes Pickavant valve grinding tool
#9
On the basis that this thing is a jig for dressing stones I am fairly confident that you assemble it as below to shape the stone...


.jpg   20201101_150833.jpg (Size: 176.44 KB / Downloads: 229)

Then insert the guide into the valve guide to centre the stone on the seat...


.jpg   20201101_150805.jpg (Size: 156.05 KB / Downloads: 229)

Reading a little between the lines, a cutter is good for softer seats and a stone essential for hardened seats? So presumably the cast iron seven block valve seat can be cleaned up with either?

I wonder how much diamond is left on the tip of the bolt... and if it is possible to cut and fix a disk of carborundum stone with epoxy to an old centre...
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RE: Sykes Pickavant valve grinding tool - by Nick Lettington - 01-11-2020, 04:17 PM

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