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I have one FZ and 3 L's, and I haven't measured anything, but I feel very
strongly that my FZ is the strongest motor of the lot. The Fz is in a 12
pound airplane that goes vertical with more authority than any of the others
in 10 &1/2 pounders. I have to admit that it is still a little overcompressed
despite the addition of 2 head shims. It will probably throw a rod one
of these days, but it has given me an awesome ride.
<BR>G.
<P>Lem Stevens wrote:
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<FONT FACE="Arial"><FONT SIZE=-1>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></FONT> <FONT FACE="Arial"><FONT SIZE=-1>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></FONT> <FONT FACE="Arial"><FONT SIZE=-1>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></FONT> <FONT FACE="Arial"><FONT SIZE=-1>Lem</FONT></FONT></BLOCKQUOTE>
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