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).
Depot sheet regarding the corrosion of aluminium cylinder head tubes and the introduction of Nickel plated Copper replacements.
| Identifier | ExFiles\Box 14\3\ Scan056 | |
| Date | 21th March 1930 | |
| To Hm.{Capt. W. Hallam - Head Repairs} From Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} For Depot Sheet. Y7050. Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson}5/MJ. 21.3.30. X7250 Y7050 CORROSION OF CYLINDER HEAD TUBES. Several cases of water in the crankcase have been traced to corrosion of the aluminium cylinder head tubes. Tubes are now available in Nickel plated Copper which should be used for replacement. General experience has shewn that, if the cooling water in a car has been boiled frequently, due to a choked radiator such as we had on some of the small gap matrix Phantom ll's it is advisable to change the cylinder head tubes, as when exposed to steam they oxidise very rapidly. Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} | ||