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 modifications for the carburetter and oil system components.
| Identifier | ExFiles\Box 169\4\ img136 | |
| Date | 18th September 1932 | |
| -4- RHC{R. H. Coverley - Production Engineer}/WSC{W. S. Cassel}3/18.9.11.32. Oil Filter LOP.E.57551 - LeC.2949. Complete to the above LOP. Oil Level Indicator LOP.E.57554 - LeC.2954. Complete to the above LOP. E.57437 Float Assembly. Oil Relief Valve LOP.E.57903 - LeC.2975. Complete to the above LOP. Carburetter LOP.E.100762 - LeC.3181-3-7-3245. Complete to the above LOP. & Schemes, incorporating the following modifications.- (1) Strengthened Diffusers Ex.9611-2 to LeC.3245. (2) Throttle Body E.100662 modified to Ex.9611. (3) Choke Tube E.100660 " " Ex.9612. (4) Suction Chamber Piston V.1437. (5) Needle Valve V.1439. (6) Main Jet E.100715 opened out to .120, and .161 dia. hole opened out to .171 dia. (7) Sleeve E.100710 having Outlet holes opened out to .105. (8) Throttle Valve E.100722 - Chamfered to allow 1/4' dia. of top hole for slow running in Throttle Body, to show above Throttle Valve when closed. (9) Float Chamber Pipe V.1443. (10) Plug Ex.9714 fitted - replacing Filter. Controls LOP.E.100819 - N.S.3542. Complete to the above LOP. and Scheme. -continued- | ||