Pretty in Pink, dunno why
Join Date: Feb 2009
Location: Redondo Beach
OK, I'm gonna say 'no'.
The 600 had a 96mm bore and a 78mm stroke.
It looks like they bored and stroked it to 100X83 to get to 650. And that's assuming they DID save the case and do a bore and stroke and didn't just start over from scratch, dunno.
If you do the three piece swap you'll be 5mm short on stroke and have no compression, plus you'll have issues with cam and balancer chain length. And who knows what else. If they had just bored it and the 600 had a 100mm stroke, you might have been in business.
To make the 600 into a 650 you'd have to replace everything from the crank up.
I don't even think you could bore the 600 jug for the 650 piston and make something like a 635 (I didn't do the math, that's a guess) because you'd be boring 2mm (.080") on a side.
Sorry, that's all I got!
Tom [email protected]
On the way downtown I stopped at a bar and had a couple of double Scotches. They didn't do me any good. All they did was make me think of Silver-Wig, and I never saw her again.
'How' are words so important they cannot be too often used.
Sting like a butterfly.
Noli Timere Messorem
Last edited by Tom Schmitz; 07-28-2010 at 08:48 PM.