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).
Issue with Bosch spark plugs being too large for the cylinder head casting.
| Identifier | WestWitteringFiles\J\March1923\ Scan6 | |
| Date | 7th March 1923 | |
| To E.{Mr Elliott - Chief Engineer} from Hs.{Lord Ernest Hives - Chair} RE. SMALL SPARKING PLUGS. X.4560. You may find, on the latest Bosch Plugs we sent to you, that the collar on the plug is too large to go into the recess in the cylinder head casting. If you cannot get the collar reduced locally, if you will return them, we will alter them and send them back by return. We will be sending you two adaptors and a spare plug for Mr. Jenner. Hs.{Lord Ernest Hives - Chair} | ||