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).
Specification sheet detailing modifications for engine and fuel system components.
| Identifier | ExFiles\Box 3\4\ 04-page230 | |
| Date | 10th February 1933 | |
| -2- Section. Description. Design. Piston. E.56610 Turbulent Head type. Cylinder. Cylinder Block with circular water jacket covers and transverse induction passage deleted. Cylinder head E.29311 with 14 m/m plugs. 1.400 Inlet Valves. Comp. ratio 6.32 to 1, two end hot spot connections and modified to Boss for carrying ignition wires. Rocker Cover - 3 thumb nuts and Bentley monogram to Breather boss and modification to holding down bosses. Front Cylinder Head Cover to suit top water connections. Correct angle. Gasket modified by new position of dowel. Lec.3267, Lec.3369, Lec.3395, Lec.3289 & 3396, Lec.3393 Handwritten note: { Drilling should be staggered. } Valves & Fittings. 1.400 dia. Inlet Valve. Valve Spring Ex.8979. Tappet spring H.900. Stiffer push rod. Steel rocker pedestals. Rocker shaft. one piece completely detailed in BY/SS.{S. Smith}1/N.10.2.33. In conjunction with - Push rod .225 dia. Lec.3296, Lec.3393 Inlet Pipes. As already detailed to - modified in accordance with - Facings for carrying air silencer and cleaner. Balancing baffle on Ha/Em's Facing for throttle spring bracket. Lec.3277, Lec.3802, Lec.3395, Lec.3316 Carburetter. Two 1 1/2" S.U. Carburetters - An air cleaner and silencer will be required. Particulars of throttle spindles and stops shown on. Lec.3378, Lec.3395, Lec.3316 Handwritten note: Spindles should not be in brass | ||