Morini 420 v 650 Triumph . . .

[boris tarpit]

The ride back from the barbeque turned into a bit of an impromtu race. I'm pleased to say that thetuned/balanced/ported Bonneville was comprehensively blown off, and by something with 250 on the sidepanel too

[mick h]

how did your bike get to be 420, i need to rebore so could be a good time to think about bigger bores. Were these the lupo piston conversion i have read about elsewhere, and did you rework the heads at all?
Cheers mick h