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<DIV><FONT face=Arial size=2>I have a 140 FZ that I bought at a swap meet,
so I do not know its vintage. The top of the piston is the expected flat
disk.</FONT></DIV>
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<DIV><FONT face=Arial size=2>I had a 140L, before this, that had ports through
the top of the piston to the inside of the ring. Apparently, as pressure
in the cylinder builds, the ports press the ring out against the
sleeve.</FONT></DIV>
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<DIV><FONT face=Arial size=2>Do the new 140 FZs have this ported
piston? Can anyone say what kind of power boost can be expected with a
ported piston? Just curious.</FONT></DIV>
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<DIV><FONT face=Arial size=2>Lem</FONT> </DIV></BODY></HTML>