Gentlemen, my spelling of "Nurlizer" and "Nurlizing" have been brought into contention before. But, I used to own a Nurlizer and also a Manulathe, along with a tri-bevel valve grinder and hard seat grinder. I was pretty certain in what I was doing with the equipment and how to spell "Nurlizing" and what it did for your valve guides and pistons. So, having seen that you felt it needed a "K" in front of the "N" I finally went looking for my Service Manual for the "Nurlizer" made by Perfect Circle that I used to own. I have a couple of pictures to share showing the machine and what it does for a piston. It will also help to "Nurlize" your valve guides.

Perfect Circle Nurlizer

cutaway of piston

Piston that has been Nurlized


Oly in Oregon

Rest in Peace

1945 GMC COE Victory Truck
1953 Willys CJ3B
1955 Chevy 1st series 3/4-ton
1958 WIFE Last series

Never say "Whoa" in a mud hole