Blueprint detailing the modification of a 1 5/8 inch S.U. carburetor piston.
| Identifier | ExFiles\Box 31\5\ Scan118 | |
| Date | 5th October 1933 guessed | |
| Hs. {Lord Ernest Hives - Chair} 1139 4 HOLES DRILL EQUALLY SPACED .120 DIA .250 .125DIA .240 DIA .188 .750 .500 EXISTING INSERT DRILLED TO TAKE NEW SLEEVE WHICH IS THEN SWEATED IN POSITION. FINALLY DRILL THROUGH .125DIA TO TAKE SECURING SCREW FOR JET NEEDLE. 1 5/8 S.U. CARB. PISTON | ||
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).