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).
Modifications to white metal bearings and oil pump for a 3 1/2 litre engine.
| Identifier | ExFiles\Box 100\3\ scan0138 | |
| Date | 7th July 1937 | |
| J.{Mr Johnson W.M.} Eyston. B24DG 3 1/2 litre White Metal Bearings for Rods Rm{William Robotham - Chief Engineer} memo Rm.{William Robotham - Chief Engineer}/R 7-7-37 3 1/2 litre. Removing crank Drilling additional Holes Grooving intermediate bearings and fitting new big ends & large oil pump Rm{William Robotham - Chief Engineer} 16/MH{M. Huckerby} 25-10-37 B: Big End Bearing changed and Large Oil Pump. At 20,000 miles or when an R90 is carried out the opportunity should be taken of putting a groove in the lower half of all the intermediate bearings. If when this modification is carried out the big end bearings show signs of breaking up they should be replaced by new white metal bearings as hitherto. It is not necessary to fit a larger oil pump to 3 1/2 litres which are treated in this manner. | ||