Leave the BS in w/o the belt?

[Shane@DBPerformance]

There are 2 balance shafts. Only one of them is driven off the BS belt. So, if you just cut that belt, then one will still be spinning and the motor will probably vibrate quite badly. Running a turned down ballance shaft is good for keeping the same oil pressure, doing it for other reasons is debateable. The oil pump gear does not directly run the balance shaft, so there isn't tremendous sideloading on it. Most of the high HP guys have had no problems with stubby style shafts with the oiling groove, even at very high RPMs. There are cheap eliminator kits out there though that have stub shafts with no oiling groove though.