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).
The fitting of a high-compression cylinder head to a customer's car.
| Identifier | ExFiles\Box 89\3\ scan0004 | |
| Date | 10th August 1936 | |
| Per Bag. Y Bly.{B. W. Bleaney - Bentley Sales} From Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}1/MJ.10.8.36. Re. Mr. Cunningham. Replying to Bly.{B. W. Bleaney - Bentley Sales}16/SM.7.8.36. As I told you on Frdiay I have been able to discover a high compression cylinder head which I can let you have for this gentleman's car. The head is actually the one which was used in last year's Tourist Trophy Race and will be considerably higher ratio than we have previously put on a cutomer's car, probably about 8 : 1. We are satisfied that this head will give Mr. Cunningham satisfaction providing that - (1) He runs on 85 Octane fuel. (2) He has Hall's metal bearings fitted with big ends. If the engine is going to be stripped down the cost of fitting Hall's metal to the big ends will be negligible compared with the expense of dismantling the engine. We should be glad if you could pass our remarks on to C. so that he will be aware of exactly what is being done because in this case you are definitely to fit a cylinder head to a customer's car which has not been standardised. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||