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).
Parts list for Bentley valves, detailing part numbers, quantities, and costs for materials and labour.
| Identifier | ExFiles\Box 82\4\ scan0358 | |
| Date | 25th August 1936 guessed | |
| Bentley valves. Part No. Description. No.off. Material. Labour. E.50028 Cup (Adjusting screw) 12 624 4 930 E.50151 Bridge piece 6 1 380 1 111 E.50225 Roller pin 12 324 1 105 E.50226 Roller (Tappet) 12 648 3 864 E.51826 Lock nut (Tappet) 12 060 172 E.52874 Plug (Rocker shaft) 2 014 076 E.54970 Bush (Rockers) 24 8 040 911 E.54971 Distance piece 6 120 173 E.55337 Tappet 12 3 456 12 800 E.55338 Tappet Guide Bush 12 5 292 11 431 EB.632 Push rod 12 3 900 3 557 E.58178 Plug (Rocker arm) 12 012 220 E.59525 Tappet guide cover 12 1 104 3 800 EB.134 Rocker shaft pedestal (Centre) 1 292 569 EB.136 Rocker shaft pedestal (Rear) 1 416 869 EB.137 Rocker shaft pedestal (Inter) 2 416 897 EB.138 Rocker shaft pedestal (Inter) 2 416 897 EB.175 Valve spring (Inlet & Exhaust) 12 6 096 1 946 EB.176 Tappet spring 12 1 536 1 822 EB.1691 Rocker shaft 1 1 156 1 880 EB.1750 Rocker arm. (L.H.) 6 3 240 7 253 EB.1751 Rocker arm. (R.H.) 6 3 240 7 253 EB.1745 Valve (Inlet) 6 4 134 6 595 EB.1746 Valve (Exhaust) 6 8 526 9 220 EB.1747 Retaining ring 12 072 EB.1748 Wedge (Valve spring washer) 12 240 2 042 EB.1749 Valve spring washer (Top) 12 1 320 1 863 EB.1783 Valve spring washer (Bottom) 12 648 1 366 EB.1784 Valve stem packing 12 108 1 133 Assembly 5 227 56 830 94 982 £2-16-10d. £4-15-0d. | ||