Had a good night on the flowbench(edited version)

MOPAROFFICIAL said

There is nothing wrong with a stone valve job. My heads last valve job was stone, because the last two vj's before ...the fat *** on the machine leaned too hard and chartered the seats. Dressing the stones correctly and taking your time, that will yield great results, an expensive machine with an idiot at the helm....and you get shiny looking ****.

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He probably didn't apply enough pressure at the right time with spindle speed way too high. I have found varying the spindle speed as I cut yields the best results.

For the record a full radius intake valve seat may look like a hero on the flow bench but usually doesn't make more power than a real defined angular seat. I use my Sunnen VGS-20 and cutters to rough out , set seat heights and throat diameter then I finish with the stones--Nothing beats stones for surface finish and concentricity or run out. J.Rob