From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Technical data sheet for a Lincoln V-8 engine.
| Identifier | ExFiles\Box 127\2\ scan0026 | |
| Date | 8th May 1937 | |
| To HS{Lord Ernest Hives - Chair}/RM{William Robotham - Chief Engineer} from E/JNA X3429 8.5.37 LINCOLN - TECHNICAL DATA - V-8. -------------------------------- Wheelbase: 136". Bore and Stroke: 3⅛" x 5". Horsepower. 39.2 S.A.E.rating. Tire Size. 7.00-18 balloon. Valve Lift. Intake 11/32". Exhaust 5/16". Diameter of Valve. 1-7/8" exhaust - 2" inlet. Valve Stems. 3/8" in diameter. Valve Seat: Angle 45°. Carburetor: Stromberg type DD. "3" dual down draft. Piston Displacement: 384.8 cubic inches. Compression Pressure: 100 lbs. per square inch. Crankshaft Bearings: No.1.-front. Dia.2" Length 2¾". No.2.-intermediate. Dia.2" Length 1½". No.3.-centre Dia.2" Length 2¾". No.4.-intermediate Dia.2" Length 1½". No.5.-rear. Dia.2" Length 3½". Total length main bearing surface 11½". Overall length of crankshaft - 32⅝". Connecting Rod Bearings: 2¼" in diameter. 2¼" in width. Piston Rings: Three ⅛" concentric rings located above piston pin. Lower one is oil seal type. Piston Pin. Dia. ⅞" - Length 3¼". Length of Connecting Rods: Center to center 12½". Camshaft Bearings(6). Length Diameter. (1) 2-3/16" 1-1/4" (2) 1-1/32" 2-1/8" (3) 15/16" 2-1/8" (4) 1-11/16" 2-1/8" (5) 15/16" 2-1/8" (6) 3-1/16" 1-3/16" Timing Chain: Width 1-1/2" - 76 links. Valve Timing: Inlet opens 22½° before top dead center. Inlet closes 66° after bottom dead center. Exhaust opens 48½°before bottom dead center. Exhaust closes on top dead center. Angle between cylinders. 60 degrees. Ratio Starter to Flywheel. 12.6-1. Engine Speed: With standard rear axle ratio 12-55. 60 m.p.h. - 2798. 80 m.p.h. - 3728. Location of Engine Number - stamped on forward left-hand corner of crankcase between first and second cylinders. | ||