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).
And a diagram analyzing a Cadillac engine drawing.
| Identifier | ExFiles\Box 65a\2\ scan0001 | |
| Date | 6th July 1928 guessed | |
| Cadillac Drg 1413056 ① Pistons only out of bore by 3/8" at BDC our (Ph III .905)(Ben-1.30)(25/30-1.30). ② Comparitively short portion of bore which is water cooled. [Diagram showing a cylinder bore cross-section] TDC WATER BDC .250 2.675 4.075 3.75 UNSUPPORTED BORE 7.00" ③ Exceptional thickness of bore section. General section at water cooled length .225" Section at top of unsupported portion .300 Tapering down to .225 at BDC ④ Large base circle camshaft 1.600 dia (Ph III 1.250). ⑤ Roller type cam followers (no bottom return springs). | ||