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).
Agreeing to modification LeC.5275 and discussing issues with push-in versus screw-in valve inserts.
| Identifier | ExFiles\Box 96\2\ scan0146 | |
| Date | 21th September 1936 | |
| FILES. x354 21th September, 1936. We agree with modification LeC.5275, will instruct for car and bed units, also get one sent out for 35-EX. Originally both main and relief valve inserts were a push in job, and had to revert to screwing in on account of coming adrift. Non return ball seat is still a push in job, and though we have not had any trouble, production have had one come loose causing oil to tappets to be cut off. Is included to stop siphoning and draining from rockers. Hs{Lord Ernest Hives - Chair}/Swdl.{Len H. Swindell} | ||