My home inspection of Speedmaster heads

And it’s in a TF head at that. I raised both eyebrows when I checked the SM’s with a plug. I index my plugs so at least the gap is exposed toward the valve, but just on looks alone yeah....hmmm! Maybe someone can run a plug in and post a pic to show this on the SM?


I’ll try to screw a 3911 in mine today. I would run down there now before I leave but it’s on my flowbench