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 engine components including main bearings, crankshaft, connecting rods, and pistons.
| Identifier | ExFiles\Box 124\2\ scan0261 | |
| Date | 30th October 1940 guessed | |
| Z Vandervell Main Bearings continued. Bearings have .003 clearance on crank. Crankshaft LOP EB 4796 2.750 Journal Complete to above LOP incorporating:- EB 4575 crankshaft. .4% Carbon Steel. EB 3960 Pinion Crankshaft damper LOP Exs 1878 Studebaker type damper complete to LOP. Exs 1421 35 Durometer rubbers Ex 36733 springs. Connecting Rods LOP EW 1764 Complete to above LOP incorporating:- EW 1750/1 Connecting rod and cap. Wraith type. ( No Oil feed hole to bore lubrication) AC9 Big end bearings. Pistons LOP EB 4318 Aerolite P482, flush top type. Standard piston rings:- EB 4737 Plain, EB 4738 "L" Section, EB 4739 Scraper Complete to above LOP NOTE. These pistons are .015" above face of cylinder block when on T.D.C. This is due to cylinder block being machined incorrectly. Two .030" thickness gaskets have been fitted. Cylinder head LOP EB 4131 PTO | ||