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).
Graph plotting Brake Horse Power and Percentage Power Loss against RPM for a Super Sports Engine, comparing open exhaust ports with an exhaust manifold.
| Identifier | ExFiles\Box 14\6\ Scan031 | |
| Date | 26th October 1928 | |
| POWER LOSS TO EXHAUST MANIFOLD. SUPER SPORTS ENGINE. ENGINE No SS.{S. Smith}3. STD. 'PHANTOM' CARBURETTOR. OPEN EXHAUST PORTS. EXHAUST MANIFOLD TO LEC. 2518. PERCENTAGE LOSS TO MANIFOLD. BRAKE HORSE POWER. PERCENTAGE LOSS OF POWER. R.P.M. OF ENGINE. | ||