Motor case set features a blank number boss there are no serial numbers on the case. Sold with Bill of Sale only. 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. FITS 1937-1947 EL 1941-1947 FL ACCESSORIES 10-0942 - 1936 61 inch Knucklehead Engine Case Set 10-0980 - Knucklehead Engine Case Set 10-0945 - Knucklehead 74 inch Engine Case Set Natural 10-1209 - Knucklehead Engine Case Set TECHNICAL SPECIFICATIONS Required to use with #10-0714 Cam Case Bushing. Required to use with #12-1947 Replica Oil Pump Assembly. RESOURCES View in Catalog View Instructions
