keppley

280zx fever- you are absolutely correct- assuming that there are other issues with the head. However, if the goal is to ONLY replace the valve seals (which was my goal, and appearently his), then my and other methods, described here, will work with a lot less headache.

I have just completed what you are trying to do... Get the type of valve spring compressor that uses the cam as a leverage point. Put enough pressure on the spring to allow the rocker arms to be removed, then...Use a compression tester fitting (minus the needle) hooked to compressed air on a cylinder that has both valves in the closed position. Push down on the spring compressor, remove the keepers and springs, and finally, replace the seals.