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Nah, clutch/flywheel should be (and are) neutral balanced. The crank shouldn't be balanced with the flywheel/clutch, unless you want to rebalance the crank every time you change your clutch/fw.As far as higher RPM, I'd be fine spinning this bottom end up to 10+, the difference is up top. If the valves can't retract fast enough they're gonna still be hanging out down low when Mr. Piston comes up, and you'll have a lot bigger problems than a li'l OOB-misfire. Spring the valves for as high an RPM as the cams will make power, anything more than that just winds up making it more work for the engine to open the valves and you start losing power.
Nah, clutch/flywheel should be (and are) neutral balanced. The crank shouldn't be balanced with the flywheel/clutch, unless you want to rebalance the crank every time you change your clutch/fw.
As far as higher RPM, I'd be fine spinning this bottom end up to 10+, the difference is up top. If the valves can't retract fast enough they're gonna still be hanging out down low when Mr. Piston comes up, and you'll have a lot bigger problems than a li'l OOB-misfire. Spring the valves for as high an RPM as the cams will make power, anything more than that just winds up making it more work for the engine to open the valves and you start losing power.
