YS 140 FZ conversion to L

[Frank Bis]

You are correct.  The crankshaft is different.  However, the L crank has a
grove on the counter weight which requires a ring like on the old 120SC in
fact it is the same ring.  To sum up you need a L-crank and a 120SC crank
ring to convert from a 140FZ to a 140L.
----- Original Message -----
From: <VicenteRC at aol.com>
To: <discussion at nsrca.org>
Sent: Thursday, November 14, 2002 11:13 AM
Subject: YS 140 FZ conversion to L


> Few weeks ago we discussed the conversion of YS 140 FZ motors to L.  I
think the conclusion was to replaced the crankshaft only.  Is this correct?
I have two FZs that are in very good conditions and I would like to gain
some power.
>
> I have the opportunity to check the head and the valves are equal in both
engines.  The only difference looking the part numbers is the crankshaft.
>
> I would like to get respond from someone that have done the conversion.
>
> Thanks,
>
> Vicente Bortone
>
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