Interesting thread. I was taught valves should rotate for the obvious benefits. Is that still true? Are there other factors that rotate the valves beyond the keeper issue? Am unaware of any valve issues due to them not rotating.
The design of the keeper have nothing to do with valve rotation, whether it be a one or multiple groove or whether or not the keepers are touching.... The whole assemble twists, valve, keepers and spring retainer. Please show some me info on the web, I like to read up on this........I think there's rumors that yellow rose is in training to be rusty Rat Rods assistant technical editor...
The design of the keeper have nothing to do with valve rotation, whether it be a one or multiple groove or whether or not the keepers are touching.... The whole assemble twists, valve, keepers and spring retainer. Please show some me info on the web, I like to read up on this........
.Uh, you'd be wrong. The keepers not grabbing the valve induces rotation. Look around and find the info. It's there.
In fact, call Trend, or Crower, or just about any company that makes and/or sells locks.
http://webbut.unitbv.ro/BU2011/Series I/BULETIN I/Jelenschi_L.pdfUh, you'd be wrong.
The springs have a twisting action made into them it is how they are. The keepers and valve grooves have very little with not letting the valve twist. The rotation action helps keep the valve and seat clear of debris to ensure good sealing and even wear. Yes some of the older engines and aircraft have rotators on the exhaust, not many cars that I am aware of......