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).
List of parts and weights for Bentley front and rear engine mountings and exhaust systems.
| Identifier | ExFiles\Box 88\3\ scan0077 | |
| Date | 10th December 1934 | |
| BENTLEY WEIGHTS FLEXIBLE FRONT ENGINE MOUNTING FB 1571 Socket REPLACES FB 247 FB 1572 " " FB 248 FB 579 Crossmember " FB 249 FB 1575 Centre Support Bckt. Roo REPLACES FB 474 & FB 745 EB 2043 Suspension Tube " EB 183 EB 2044 Pivot " EB 499 EB 2045 Engine Suspension Arm " EB 182 (The following 5 lines are grouped with a bracket pointing to 'NEW DETAILS') FB 1576 Cover — FB 1584 Distance Piece FB 1577 Top Plate — FB 1588 " FB 1578 Locating Piece — F60400 Top Washer FB 1579 Bolt — F60398 " Rubber FB 1580 Support Washer — F60399 Bottom " FB 475 Radiator Bracket — Standard E.71433 Nuts (The following 2 lines are grouped with a bracket pointing to 'FOR BEARER') F58547 Collar F58548 Insert TOTAL WEIGHT 22 LBS 9 OZS. REAR ENGINE MOUNTING F 1225 Cross Member F 60348 Bracket F 60349 Bottom Plate F 60350 Top Plate F 60351 Top Rubber Pad F 60515/0/7 Bottom Rubber Pad F 60353 Distance Piece F 60354 Bush F 60355 Packing F 60360 Support Bracket F 60361 " " F 60362 Cup F 60363 Adjusting Screw F 60364 Rubber (Side) F 60481 Stiffener F 60482 Rivet TOTAL WEIGHT 12 LBS 13 OZS. EXHAUST SYSTEMS Lightened Type As Fitted To 5 B IV — 54.5 LBS Standard Type — 61.75 LBS | ||