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).
Blueprint for an exhaust manifold valve shaft bushing.
| Identifier | ExFiles\Box 124\3\ scan0286 | |
| Date | 18th January 1935 | |
| MUST BE SMOOTH FINISH. BUSHING - EXHAUST MANIFOLD VALVE SHAFT. .376 .377 .479 .480 GRIND. 1/32 45° 1/4 BUICK SPEC. X - 81705 BRINELL HARDNESS 170 TO 195 ON BAR STOCK. ROLLS-ROYCE, LTD PRINT ROOM 18 JAN 1935 DERBY. | ||