My home inspection of Speedmaster heads

That plus .005 on the one valve can be cause by a few things.

That valve job needed an extra .005 to clean it up, or the machinist just took an extra .005.

The valve face itself took an extra .005 to clean up or the machinist took an extra .005.

The stem didn't get faced off as much so it's .005 long.

Or it can be a combination of some or all of those. You can run it and never ever know the difference, or you can stem .005 off the valve, or you can go through all the work to figure out why it's plus .005 and fix that if it's eating you up.

Me? I'd run it. Except I don't like that valve job. There is no way I could run that basic seat. Other than that, I see nothing to make me nervous.

Great video. The only issue I have with the video is the dog didn't get near enough face time on camera. We need more DOG!!!