Knucklehead Engine Case Set

Oil from top end returns through pushrod tubes. Does not return through cylinder base. Case accepts loose roller bearings on the sprocket and pinion shaft side. Case set required line lapping of the main case races. Order case race available separately. Case set is designed for replacement of the original cases. Case sets do not include pinion and sprocket shaft races. *NOTE: Case races should be line bored to 1.500 inch to accept standard rollers. Use 2 gaskets when mounting the oil pump body for proper clearance. **NOTE: Numeral inch7 inch stamped on rear motor mount halves to denote 74 cubic inch. Builder may stamp these numbers in. *NOTE: Must order the following required components separately: cam distributor gear breather gear pump and bushing.
Tech Notes: *NOTE: To confirm the main bearing fitment clearance you must take the standard bearing measurement and multiply it by 2 then add that answer to the left side sprocket shaft meaurement. For example the standard bearing measures .250 multiplied by 2 equals .500. The left side sprocket shaft measures 1.000 adding them together you get 1.500 which means you're running 1.501 fitment with .001 clearance. Required to use with #10-8215 Lightning Knucklehead Cam Shaft. Required to use with #12-1502 Distributor Drive Gear. Required to use with #12-1947 Replica Oil Pump Assembly. Required to use with #10-0714 Cam Case Bushing.
Instructions: http://www.vtwinmfg.com/Instructions/10/10-0104.pdf