B&M 174 REPLACEMENT ROTOR SET [#9364]

These are TBS replacement rotors for an original B&M 174 Supercharger with rear ROLLER bearings.  These rotors include the IKO (IR 1212) rear bearing race already installed on the rear shafts.  Rotors are machined to include Teflon OD strips and turned to stock OD Diameter for the B&M 174 case.  Approx Rotor length is 10.489″

Single row front bearing (6204) superchargers require the use of TBS #4560 gear set (192/250 gear set).

Double row front bearing (5204) superchargers require the use of TBS #9369 gear set (192/250 gear set modified for B&M double row bearing).  These gears are modified with the .260″ already machine off the back side for proper clearance for the added thickness of the double row bearing.

Please note that this Rotor set is for an original B&M Supercharger with a rear ROLLER bearing.  These rotors will NOT work in a Holley built B&M supercharger with sealed rear ball bearings.  Installation of these rotors should be done by an experienced blower builder as all clearances and timing will need to be adjusted on assembly.