A large amount of added insurance and block longevity will be had by running a 8 counter weight crank, and this true even if your only spinning the thing up to 6K.
Keep in mind that the G force loads on the main web will be twice as great at 6000 rpm as they where at 4000 rpm.
not having those 2 center counter weights will bit a big chunk out of your *** sooner or later.
Keep in mind that the G force loads on the main web will be twice as great at 6000 rpm as they where at 4000 rpm.
not having those 2 center counter weights will bit a big chunk out of your *** sooner or later.