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).
Recommendation to not implement close inlet valve clearances on all production cars, but to test on a small batch first.
| Identifier | ExFiles\Box 142\2\ scan0378 | |
| Date | 28th September 1936 | |
| To By.{R.W. Bailey - Chief Engineer} X1200 Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}8/KW.28.9.36. With reference to By/Cgh.{W Clough}1/W.2.9.36, we recommend that we do not go over to close inlet valve clearances on all production cars, but put a small batch through to gain experience, as we have done in previous cases such as magnesium gearbox, etc. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||