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 various engine components across multiple units.
| Identifier | ExFiles\Box 123\5\ scan0196 | |
| Date | 30th November 1938 | |
| -2- Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}1/MH.{M. Huckerby}30.11.38. Valves and Fittings - Cont'd.{John DeLooze - Company Secretary} Nos. 1, 2 and 3 units to incorporate sodium filled exhaust valves EB.4378. No.4 unit to have solid exhaust valves EB.3854 as per LOP. Nos. 1 and 2 units have exhaust guides to EB.4377 to suit sodium filled valves. No.3 unit exhaust guides to EB.4377. No.4 unit exhaust guides as EB.4034 modified to suit PD.206 raising of the bosses. Cylinder Head LOP.EB.4131. All 4 units to incorporate modification to transfer throat, PD.292, in cylinder head No.1 unit to have R/MC inlet seats as LOP. No.2 unit to have S/SLV seats. Nos. 3 and 4 units have S.65 seats. Crankshaft LOP.EB.4121. All 4 units to above LOP. Connecting Rods. Nos. 1 and 2 units as LOP.EB.4313. Nos. 3 and 4 units to LOP.EB.4295 (forged to size) and to include the fitting of Vandervell little end bushes which Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} will supply. Oil Pump details. In accordance with the specification Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}2/MH.{M. Huckerby}17.11.38. | ||