batman wrote on 06/06/17 at 16:15:47:I think it might be likely that you could use a stock s-40 piston in an st400 cylinder,and end up with a short throw 450 cc, redline should be the same as the st400 -7000rpm and give about 30hp .
The LS400 and Temptor have a different bore than the 650 (87mm vs 94mm)....I am not sure what the stroke is on the LS400. Suzuki does use a different crank, rod and piston so you cannot just change the piston and cylinder as the pin is a different diameter.
We had one member (paulmarshall from NZ) that was active 3-4 years ago that did the conversion, and he supplied this forum with all the details.
http://suzukisavage.com/cgi-bin/YaBB.pl?num=1366243636/0
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