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).
List of specifications for the assembly of Unit No.6 for endurance testing.
| Identifier | ExFiles\Box 155\2\ scan0179 | |
| Date | 20th December 1937 | |
| -6- Nos 4, 5, and 6 tappet blocks non plated, cloudburst hardened tappets. These were run in on Hi press oil. Continental 6.5 : 1 ratio cylinder heads Rm.{William Robotham - Chief Engineer}160. E.88447 strengthened KE.965 valves. E.88165 S/SLV inlet valves hollow stems. Std. double springs with hydraulic mechanism stopped off. No.6. Unit to be assembled as follows for further endurance. Obsolete type crankcase. Packard type balance weight crank. EX.28937/8 Hall's forked rod bushes in centricast AC.6. 3 rods with Eleven H Whitemetal on blade rod face and 3 with std. W/M.{Mr Moon / Mr Moore} Front centre and rear main bearings in std. W/M.{Mr Moon / Mr Moore} Inter main bearings in Centricast A.C.6. Bottom tappets in accordance with the modified scheme LeC.5667 rectangular section 6 in I/C and 6 in S/ZN cloudburst hardened face. Liners No.1 and 2 Brico. No.3. and 4 Sheepsbridge. No.5. and 6 R.R. I/C. Cylinder heads ex No.13. Latest 4 port with improved water passages. Std.EB.175 springs 4" - 6" grummets. Std. valves KE.965 exhaust and S/SLV inlet. S/SLV exhaust seats on A side. Latest camshaft (E.88760) for solid rockers. | ||