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).
Oil and water leaks found in a No. 3 unit after a 15-hour test run.
| Identifier | ExFiles\Box 4\1\ 01-page230 | |
| Date | 25th January 1935 | |
| To RHC.{R. H. Coverley - Production Engineer} V300 Hs{Lord Ernest Hives - Chair}/Swdl.{Len H. Swindell}5/KW. 25.1.35. We have returned No. 3 unit after 15 hours running on the bed, the dynamo drive having tightened up. Prior to this happening, the gears are a good set, no whine and very little rattle, with the exception of the oil pump gears which are noisy. The pistons are quiet under hot or cold conditions. The following is a list of jobs which need attention. Oil Leaks. (1) Leaks into flywheel casing from the crankcase and presumably from the rear bearing. (2) Leaks into the dynamo coupling housing above the engine foot. (3) Leaks from the base of the stud which clamps the oil pipes to the camshaft cover in the V.{VIENNA} Suspect the boss as being cracked in the cam cover. (4) Leak from a plug in the relief valve, marked. (5) Leaks from rocker cover joints, previous engines cured by fitting cork washers. (6) Engine overoiling at high speeds on A side bank. B side O.K. Water Leaks. Very bad leaks from both A & B side cylinder head gaskets, being worst at the rear end of the blocks when running at high speeds. We suspect some restrictions in the cylinder head water passages, will you please check as far as possible to drawing dimensions, also that the jointing washers under the top water rails are not overlapping the bores of the flanges. Unit to be assembled with the new crankcase, and modified water holes in the cylinder head (Lec.4074). | ||