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).
Urgent work required on car cylinder heads and associated components.
| Identifier | ExFiles\Box 86\1\ scan0114 | |
| Date | 17th January 1935 | |
| +219 To RHC.{R. H. Coverley - Production Engineer} Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}4/KW.17.1.35. Car Cylinder Heads. We know there has been a bit of congestion in the cylinder head section owing to pressure of aero work lately, but we have one or two jobs we should like to get through in the immediate future :- (1) EB.2050. This is the high compression head which it is proposed to use on production, and it should go to France on 5-B-IV at the end of the month. The only modification from the existing specification is that we should like 1.250" exhaust valves to be fitted. Will you please urge completion of this. Also prepare another set of exhaust valves to EB.2037 but with 1.30 throat. (2) Will you please urge the head with the large inlet ports and high compression ratio, which is at present going through, to V.1732. (3) We hand you herewith a head to EX.16041. Will you please machine the turbulent lip as per attached sketch. (4) Will you please put in hand 6 inlet valves to EX.15603, throat diameter to be 1.550". Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||