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).
Engine oil leaks, general running performance, and a post-dismantling inspection of parts.
| Identifier | ExFiles\Box 111\3\ scan0086 | |
| Date | 27th April 1939 | |
| -6- OIL LEAKS. Leaks were mainly confined to the tappet door nuts due to the inaccurate face on the sheet metal covers, these being cured by a soft washer, leather or fibre. The stiffened tappet doors are a considerable improvement and withstand the tightening down of the nuts, GENERAL. Other than what has been reported, the general running of the engine was satisfactory and listed as follows:- (1) Good distribution with the mock up Continental Bentley V.{VIENNA} induction system. (2) Reasonable idling at 300 R.P.M. with normal .010 tappet clearance. (3) Engine gears quiet without attention. (4) Valve gear satisfactorily quiet. (5) From the start there was an intermittent squeak on this engine and in the time available were unable to define the reason for it. (6) Maximum power obtained on Shell petrol without detonations, on redline, slight drop in power by retarding to clear detonations. INSPECTION. On dismantling prior to being assembled for the chassis, the following points were noted on the condition of the parts. (1) Petrol pump push rod badly worn. From observation there appears very little oil between the rod and the cam eccentric. Has been erected for further trial with a new push rod and an oil feed hole drilled from the tappet chamber to register with the eccentric. | ||