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).
Details for manufacturing a High Power Single Inlet Valve Head in aluminium instead of cast iron.
| Identifier | ExFiles\Box 134\2\ scan0082 | |
| Date | 15th October 1936 | |
| To RHC.{R. H. Coverley - Production Engineer} Copy Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Da{Bernard Day - Chassis Design}: BY Hs{Lord Ernest Hives - Chair}/Edwards. X1129 E/PSN.1/MN.15.10.36. CAR UNIVERSAL UNIT. High Power Single Inlet Valve Head. We send you herewith the following details for making a High Power Head in aluminium instead of cast iron. RS.{Sir Henry Royce's Secretary}315. Cylinder Head. RS.{Sir Henry Royce's Secretary}316. Valve Seat - Inlet. The existing pattern EB.1989 should be used modified as shown to RS.{Sir Henry Royce's Secretary}315. The seat should be bored initially to take the standard 1.750" diameter inlet valve EB.2026 but can be bored out to 1.850" to take a larger valve if required. E/PSN. Att: RS.{Sir Henry Royce's Secretary}315 (3 prints) RS.{Sir Henry Royce's Secretary}316 (2 prints). | ||