Armen wrote on 09/25/16 at 08:36:00:Hey Lance,
What cam would you recommend for a stock motor with a 40mm Flatslide Mikuni (with K+N Pod), and a RYCA long muffler?
Not touching the piston/cylinder for now, but I'll do a high compression 97mm eventually.
My idea of a good time is a bike that pulls from 2K RPMs and has a wide power band. Don't love revving the nuts of the motor.
thanks,
-Armen
I make just the Stage 3 Camshaft now, and as stated it is a middle of the road design that takes advantage of a large single cylinder engine, and the type of power it makes. The peak torque happens around 4500 rpm and the peak power at about 5500 rpm. Power and torque does not stop there but peaks out at those levels. You will feel the effects of this camshaft shortly after you come off idle, when compared to the stock camshaft. I think this is ideal for the LS650 engine.
For a piston, I favor the 94mm High Compression piston we now have available. You get all of the benefits from the higher compression but do not need to bore your cylinder, and thus save a good bit of money. Keep in mind that with the 97mm piston, you gain 42cc in engine volume, which is a minor effect compared to the rise in compression ratio from 8.5:1 to 10.5:1.