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).
Drawing showing modifications to the exhaust valve and port for a high power head.
Identifier | ExFiles\Box 133\1\ scan0095 | |
Date | 30th July 1934 | |
SCT 39 HIGH POWER HEAD 1.700" DIA 1.600" DIA .125"R.{Sir Henry Royce} 15° .100R .500"R .200"R .250"R .875" R 1.450" R MODIFICATIONS TO EXHAUST VALVE AND PORT ALL OTHER DIMENSIONS FROM E.B. 1993. NOTE:- THE DOTTED LINES SHOW THE ULTIMATE EXTENSIONS OF THE MODIFICATIONS. JCS | ||