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).
Valve timing specifications for chassis 93-NK and 46-PK.
| Identifier | ExFiles\Box 66a\2\ scan0003 | |
| Date | 17th March 1925 guessed | |
| X8060 2-EAC-11 - CHASSIS 93-NK. VALVE TIMING. .010" CLEARANCE. I.O. 8.2º P.T.C. No.1 cyl. I.C. 56º P.B.C. E.O. 53º B.B.C. E.C. 4.6º P.T.C. ------------ 3-EAC-11 - CHASSIS 46-PK. I.O. 2º B.T.C. .010 CLEARANCE. No.1.cyl. I.C. 50º P.B.C. E.O. 55º B.B.C. E.C. 8.7º P.T.C. 110º Camsft. ------------ I.O. 10.2º B.T.C. No.6 cyl. E.C. 12º P.T.C. ------------ | ||