the parts book quotes 450 stuff as staring in 2003 but I think it is an error. to have been 450cc they would have has to have put the 57mm stroke crank in a year early! (or gone down on the bore which they didn't do).
interestingly, manufacturers will lie about the CC of an engine!
I once bought a very rare bike: a Ducati 400SS which was a Japan only bike and flopped!
they brought them back from Japan and each country in Europe tried to sell a few of them. they were the only 'Pantah' based engine ever to get the 6-speed gearbox so within a day I'd had the box out and fitted an old 5-speed I had.
anyway, I then went to tune the *** off it and I swopped the "51mm stroke" crank for the usual (for the 500/600) 58mm stroke. only the pistons popped out the top of the barrel! I'd bought and prepared a crank, I'd bought rare 86mm piston and barrels to make this a short stroke special - 86 x 51 = 600cc Ducati 600SSS.
I checked the stroke and it was indeed already a 58mm stroke and the real cc was 460cc!!!! the bike was standard and I know that nobody else had been in there. I guess nobody minded because in Japan against the ZXR400, FZR400 and RC30 the bike was still gutless!
so you never know, the last 470s could have been short stroke 450's - but I doubt it!
alligators in New York Sewage Systems anyone! :lol: :lol: :lol:
regards
Taffy