[zcoker]

I’m only starting this thread because there are published figures out there on 911 deck height yet many disagree and always have some form of specific reason to justify their measurement, whether it hard core experience or basic air cooled engine knowledge. Okay, so what is it? Many on this forum say around 1mm. Wayne, however, publishes that a .050-inch or LESS deck has the potential to damage the engine. The recommendation in his book is 1.25mm to 1.50mm. That’s not 1mm. Then there are those other pro engine builders who claim it to be 0.035-inch to 0.040-inch, which is in the danger zone, accordingly. Should not we clarify this?