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).
Six technical observations and issues with engine components, including carburetors and manifolds.
| Identifier | ExFiles\Box 173\4\ img190 | |
| Date | 7th December 1935 guessed | |
| (1) At least 5/8 asbestos packing between the Carb: and manifold (2) Venting of the float chamber lid{A. J. Lidsey} by an affair like our axle breathers with a flange to prevent bubbles of petrol escaping. They have never had a fire because of venting under the bonnet. (3) This makes driving possible behind the car and the bonnet top when the temperature is always high. (4) Cool pipe comes and passes so that boiling in one place does not vent through the float chamber. (5) Deflectors to prevent exhaust manifold heat reaching the carbs: (6) Not yet obtainable but the solution. Having tried out an updraught mixer buffered from this trouble & the engine was always restart. They asked for particulars of downdraught carbs. | ||