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).
Altering the exhaust manifold studs on the Phantom III cylinder head to a different material.
| Identifier | ExFiles\Box 93\4\ scan0114 | |
| Date | 22th March 1937 | |
| 319 TO: BY.{R.W. Bailey - Chief Engineer} [struck through] Copy to SA. [struck through] Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux} E.H. [struck through] E/PSN.3/MN.22.3.37. [Handwritten notes and signatures] WyM{G. Harold Whyman - Experimental Manager} Is this OK Yes Exhaust Manifold Studs in Cylinder Head - Phantom III. We note that the exhaust manifold studs in the cylinder head on the Phantom III are in S/N. although those on the 25/30 and Bentley are now in KE.965. This note confirms a conversation with you in which you have agreed to alter the Phantom III studs to KE.965 as trouble has been experienced in the past with exhaust manifold studs breaking. We feel that we should not take any risk on the Phantom III, although the cylinder head is in aluminium and the manifold stiffer and less liable to distortion than those on the 25/30 and Bentley. We should be pleased if you would arrange for these studs to come on to production as soon as possible. Detail drawing EB.268 of the studs is attached. E/PSN. Att:EB.268. | ||