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).
Specifications for cylinder head gaskets and pistons, including materials, dimensions, and part numbers.
| Identifier | ExFiles\Box 97\2\ scan0030 | |
| Date | 14th March 1939 | |
| -2- (2) Cylinder Head Gasket. To EW.1933 in Klingerit "1000" 'c' type heat treat. A note should be made to the effect that the gasket should be liberally smeared with clean engine oil on both sides on assembly. (3) Pistons. 7 : 1 Compression ratio pistons with raised crowns in accordance with the Aerolite drawing P.451. We wish to adhere to the skirt dimensions and grinding similar to the original Aerolite piston EB.2844. Regarding the piston rings, all should be tin plated by Aerolites, and supplied with the pistons. Other than tin plating the rings are as follows:- Top compression................ E.60820. 2nd. compression L section.... E.61123. Scraper rings.................. EW.3122. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||