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).
Weight breakdown of S.S. Jaguar engine components.
| Identifier | ExFiles\Box 126\5\ scan0066 | |
| Date | 10th June 1938 | |
| 1040 also 1115 c. Files. c. Board S.S.JAGUAR. 10th. June 1938 ENGINE WEIGHT. lbs. ozs. Section 1A Cyls. and Crankcase. 207 - " 1B Cylinder Head. 82 7 1/2 " 1C.D. Crankshaft and Pistons. 106 5 1/2 " 1E.F.G. Sump. Front engine Mt. 42 4 " 1H.I.J.K. Water Pump & Fan & Carbs. 59 11 1/2 " 1L Borg & Beck Clutch. 21 12 1/2 " 1M Valves & Mech. 32 9 3/4 " 1N Engine Electrical System. 50 14 3/4 603 1 1/2 | ||