I see your point now....
Was under the impression that you meant that the plug went into the combustion chamber deeper, which is quiet impossible...
Originally Posted by
cdelong
If there is more body around the wire in a hot plug (smaller hole) then the compression would be higher since the hole in the plug IS part of the combustion chamber. Opposite goes for a colder plug..... (larger hole).... less compression since the hole is bigger.
But it's the opposite around....
MORE material means a COLDER plug...