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).
Sketch and report on a broken exhaust valve from a Bentley No 4 cylinder.
| Identifier | ExFiles\Box 88\4\ scan0204 | |
| Date | 17th March 1937 | |
| BENTLEY - 6.BTV EXHAUST VALVE. S/SLV. NO 4 CYLINDER. BROKEN AFTER 6447 MILES RUNNING. 17-3.37. | ||