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).
Performance graph comparing different Bentley cylinder head configurations, materials, and compression ratios.
Identifier | ExFiles\Box 86\1\ scan0065 | |
Date | 9th March 1934 | |
B.V.22 COMPARISON OF CYLINDER HEADS (BENTLEY) UNIT - B.4.A. 1 ALUMINIUM CYLINDER HEAD (COMPRESSION RATIO 7.38:1) LEC3LLS 2 CAST IRON (COMPRESSION RATIO 7.38:1) NO AIR SILENCER - INLET 1.450 OPEN EXHAUST - EXHAUST 1.200 4 STANDARD HEAD - INLET 1.40 E.B. 615 COMP. RATIO 6.45 EX: 1.30 B.H.P. B.M.E.P. (LBS/☐") R.P.M. VALVE TIMING (.020 CLEARANCE) T.D.C. 3° 7° EXH INL. 51.5° 49° R.M. 9.3.34 | ||