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).
List of components and specifications for Bentley III engine units No.3 and No.4.
| Identifier | ExFiles\Box 155\2\ scan0257 | |
| Date | 11th November 1938 | |
| -2- Bentley III No.3 (1.B.50). Main bearings as Units (1) and (2) Big ends thin section non flanged A.C..6. Oil jet holes in con. rods. Crankshaft Bentley balance weights, modified rear end to suit oil retaining device ECD.238 (no felts). Std. Wraith high oil level indicator. Original large valve cylinder head. Marseline rocker cover joint. Rubbers in place of springs under rocker nuts, .030" Klinger head joint 6 : 1 : 1 ratio. Original 1 5/8 S.U. carbs. with mixture control. Standard Aerolite pistons. E.B. 3466 camshaft (original B.III type). Original Attwaters camwheel. Delco distributor and spring drive. General oil filter. B.III No.4 Unit (9.B.V.). Main bearing as 1, 2, and 3 units. High oil level indicator. Crankshaft with Bentley balance weight. Upte-date con. rods and bearings, i.e. A.C.9. die cast thin section flanged bearings. Oil jet holes in rods. Standard Aerolite pistons. | ||