Motorcycle Forum / General / Yamaha / February 2007

if you bashed an 850cc kit for the xs750 and got a hotter
cam, they were very fast. a guy did a build article is one
of the cycle mags in the early 80's. he used pistons from
some jap motor that be lightened and modded for a 9.5
compression ratio. the cam was a one-off and cost him almost
$1000, so it wasn't cheap.
personally, i would find a good used sr500 and spend the
$400 for the minton mods, a better piston and the white bros
stage 2 cam. you can do these in a weekend and the bike will
go from 28 hp to over 40. makes a 300lb bike fly! i have one
thus modded and it's a blast to ride, takes almost no
maintencance and gets 45+ mpg.
with the current prices, you can get the whole thing, bike
and all, for less than $1500!