| Description | Date | Identifier | |
| Material substitutions and makeshift parts for a Buick Type Water Pump due to phosphor bronze unavailability. | 10th Jan 1941 | Box 124 \ 2 scan0292 | |
| Advice note from Machining Ltd. for the dispatch of six exhaust valves against order number 36358. | 15th Jan 1941 | Box 124 \ 2 scan0293 | |
| Instruction to the Iron Foundry to produce twelve pump casings for a B.60 water pump from a newly completed pattern. | 28th Jan 1941 | Box 124 \ 2 scan0294 | |
| To the Iron Foundry requesting castings for B.60 & B.80 water pump parts. | 30th Jan 1941 | Box 124 \ 2 scan0295 | |
| Crankshaft torsional vibrations in B.60 and flat 12-cylinder engines. | 17th Feb 1941 | Box 124 \ 2 scan0296 | |
| Technical discussion on magnification factor at resonance, with formulas for stress and amplitude in crankshafts. | 17th Feb 1941 | Box 124 \ 2 scan0297 | |
| Analysis of engine vibration amplitudes and torque settings for constant friction dampers, comparing 6 and 12 cylinder engines. | 17th Feb 1941 | Box 124 \ 2 scan0298 | |
| Technical analysis of engine vibration, focusing on damper energy dissipation, friction torque, and order vibrations. | 17th Feb 1941 | Box 124 \ 2 scan0299 | |
| Comparing torque component and vibration between 6 and 12 cylinder engines, with notes on future design. | 17th Feb 1941 | Box 124 \ 2 scan0300 | |
| Commentary on a memo concerning crankshaft torsional vibrations in B.60 and Flat 12 engines. | 16th Dec 1940 | Box 124 \ 2 scan0301 | |
| Series of engine power and camshaft comparison graphs for various engine models. | 21th May 1940 | Box 124 \ 2 scan0302 | |
| Four engine performance comparison graphs for Wraith, Ripple, Corniche, and Phantom III models. | 1st Dec 1938 | Box 124 \ 2 scan0303 | |
| Performance graphs for B.80, B.60, and B.V. engines under various test conditions. | 18th Mar 1941 | Box 124 \ 2 scan0304 | |
| Specification for a new 8-cylinder B.80 aluminium engine, detailing design changes. | 18th Mar 1941 | Box 124 \ 2 scan0305 | |
| List of 15 requested features for a new design, including engine and drivetrain components. | 18th Mar 1941 | Box 124 \ 2 scan0306 | |
| Modified combustion chamber design (PL.525) for 3 1/4 bore engines. | 28th Mar 1941 | Box 124 \ 2 scan0307 | |
| Production of universal patterns for various 6-cylinder engines. | 12th May 1941 | Box 124 \ 2 scan0308 | |
| Experimental super reach spark plugs and their suitability for different cylinder heads. | 14th May 1941 | Box 124 \ 2 scan0309 | |
| Analysis of the potential causes for a central journal bearing failure. | 19th May 1941 | Box 124 \ 2 scan0310 | |
| Requesting the re-boring of bearing houses for a B.60 block. | 26th May 1941 | Box 124 \ 2 scan0311 | |
| Comparison table of camshaft acceleration, deceleration, and tappet velocity data for various engines. | 26th May 1941 | Box 124 \ 2 scan0312 | |
| Technical discussion on cam loading, valve lift, and valve striking velocities. | 26th May 1941 | Box 124 \ 2 scan0313 | |
| Design of a single inlet valve spring to replace a double spring, detailing changes in poundage and stress. | 20th May 1941 | Box 124 \ 2 scan0314 | |
| Mileage report for cast iron engines and other components, split into B.80 and B.60 units. | 5th Jun 1941 | Box 124 \ 2 scan0315 | |
| Forwarding blueprints for an R.A.F. 80 Alum. Engine cylinder liner. | 30th Jun 1941 | Box 124 \ 2 scan0316 | |
| Test results on B.60 oil pumps regarding improved oil pressure at idling speed by reducing gear clearance. | 1st Jul 1941 | Box 124 \ 2 scan0317 | |
| Test results for B.60 Oil Pumps, showing increased oil pressure with reduced end float of gears. | 1st Jul 1941 | Box 124 \ 2 scan0318 | |
| Modification to the bye-pass filter pipework for Cast Iron Engines B.40-60-80, replacing banjo joints with olive joints. | 2nd Jul 1941 | Box 124 \ 2 scan0319 | |
| Issuing prints for bevel gears for a steering drive mock-up on the Senior Range Rear Axle. | 7th Jul 1941 | Box 124 \ 2 scan0320 | |
| Outlining a scheme and modifications for an interlocking mechanism in a Senior Range Gearbox. | 6th Nov 1941 | Box 124 \ 2 scan0321 | |
| The production of lightened connecting rods using blueprints from existing parts. | 11th Jul 1941 | Box 124 \ 2 scan0322 | |
| Modification of a B.60 crankcase, including boring out bearing housings and supplying a new main bearing. | 12th Jul 1941 | Box 124 \ 2 scan0323 | |
| Valve bounce and surge issues for B.60 & B.80 engines. | 16th Jul 1941 | Box 124 \ 2 scan0324 | |
| Technical note on engine valve train components, specifically push rod design and performance. | 16th Jul 1941 | Box 124 \ 2 scan0325 | |
| Retaining washer and oil cap for a crankshaft with increased journal bores. | 16th Jul 1941 | Box 124 \ 2 scan0326 | |
| Calculations and test results for inlet valve bounce. | 16th Jul 1941 | Box 124 \ 2 scan0327 | |
| Performance analysis of a lightened push rod compared to a standard set up. | 16th Jul 1941 | Box 124 \ 2 scan0328 | |
| Issues with valve bounce, spring surge, and engine idling, with proposed solutions and actions. | 16th Jul 1941 | Box 124 \ 2 scan0329 | |
| From the Iron Foundry regarding B.40 Engine cylinder block compositions and the feasibility of a new aluminium casting. | 17th Jul 1941 | Box 124 \ 2 scan0330 | |
| Modification to the rocker oil feed filter for the R.A.F. B.80 Alum engine. | 26th Jul 1941 | Box 124 \ 2 scan0331 | |
| Blueprint for a Crankshaft Fan Pulley made of Ferobestos for a B.60 engine. | 29th Jul 1941 | Box 124 \ 2 scan0332 | |
| Specification revision for a Bentley 60 Unit No.1 on a Lorry Chassis, detailing changes to connecting rods and clutch. | 29th Jul 1941 | Box 124 \ 2 scan0333 | |
| The dispatch of blueprints for the R.A.F. B.80 Alum engine. | 30th Jul 1941 | Box 124 \ 2 scan0334 | |
| Listing blueprints being sent for the R.A.F. B.80 Alum engine. | 30th Jul 1941 | Box 124 \ 2 scan0335 | |
| Provision of blueprints for the R.A.F. B.80 Alum. crankcase and cylinders. | 5th Aug 1941 | Box 124 \ 2 scan0336 | |
| The specification and proposed rebuild of the B.60 No.2 engine. | 16th Aug 1941 | Box 124 \ 2 scan0337 | |
| Investigation into suspected cracks and inclusions on a Bentley V8 cylinder crankshaft. | 19th Aug 1941 | Box 124 \ 2 scan0338 | |
| Suggesting the testing of a Cotal gearbox on the Ripple car, with potential engine and brake modifications. | 21th Mar 1941 | Box 124 \ 2 scan0339 | |
| The running and issues of two experimental cars, 9.B.V. and 4.B.50. | 21th Aug 1941 | Box 124 \ 2 scan0340 | |
| Request to investigate the repeated failure of the flywheel on 8-cylinder cars. | 22th Aug 1941 | Box 124 \ 2 scan0341 | |
| Wear on a car and proposing a test by blocking lubricating holes in certain cylinders. | 22th Aug 1941 | Box 124 \ 2 scan0342 | |
| Production plan for rationalized cylinder blocks for a range of engines. | 22th Aug 1941 | Box 124 \ 2 scan0343 | |
| Examination and causes of a cracked crankshaft centre bearing. | 22th Aug 1941 | Box 124 \ 2 scan0344 | |
| Notification regarding the removal of gearbox No.1-B-V and the fitting of gearbox 10-B-V to chassis 1-B-50. | 27th Aug 1941 | Box 124 \ 2 scan0345 | |
| Parts list for an R.A.F. B.80 Alum 3 1/2' Bore engine, concerning S.U. carburetter components. | 27th Aug 1941 | Box 124 \ 2 scan0346 | |
| New and previously issued parts for a Senior Range R.A.F. B.80 engine. | 27th Aug 1941 | Box 124 \ 2 scan0347 | |
| Continued parts list page, showing part numbers, descriptions, and quantities. | 27th Aug 1941 | Box 124 \ 2 scan0348 | |
| Parts list with quantities and a note about manufacturing requirements and blueprint orders. | 27th Aug 1941 | Box 124 \ 2 scan0349 | |
| Correspondence regarding an incorrect parts delivery of brake drums for chassis B.34.AW. | 30th Aug 1941 | Box 124 \ 2 scan0350 | |
| Examination of an obstructed oil drilling in a B.80 No.6 Crankcase. | 11th Sep 1941 | Box 124 \ 2 scan0351 | |
| Analysis of possible causes for a series of engine failures, focusing on crankshafts, bearings and oil system blockages. | 11th Sep 1941 | Box 124 \ 2 scan0352 | |
| Providing instructions for completing pattern work to produce B.60 six-cylinder engine crankcase castings. | 12th Sep 1941 | Box 124 \ 2 scan0353 | |
| Photograph of connecting rod bearings from a B80 No. 1 Unit, run in a 4 B50 car. | 15th Sep 1941 | Box 124 \ 2 scan0354 | |
| Photographic record of A.C.9. connecting rod bearings after mileage accumulation and test bed hours. | 29th Aug 1941 | Box 124 \ 2 scan0355 | |
| The replacement of a gearbox on Bentley Chassis 12-B-V, engine unit Silver Ripple No.2. | 16th Sep 1941 | Box 124 \ 2 scan0356 | |
| Work on the Silver Ripplet Chassis 1-RT-1, specifically the removal and fitting of a gearbox. | 16th Sep 1941 | Box 124 \ 2 scan0357 | |
| Parts to be manufactured for an R.A.F. B.80 Alum engine. | 16th Sep 1941 | Box 124 \ 2 scan0358 | |
| Continued list of parts with their respective part numbers, descriptions, and quantities. | 16th Sep 1941 | Box 124 \ 2 scan0359 | |
| Confidential memo discussing the reluctance to dismantle a chassis due to a scarcity of skilled workmen. | 9th Sep 1941 | Box 124 \ 2 scan0360 | |
| Scheme for fitting a Renold Duplex chain driven camshaft to a B.60 engine. | 18th Sep 1941 | Box 124 \ 2 scan0361 | |
| Suggesting a chassis examination be postponed until the end of the war due to a labour shortage. | 20th Sep 1941 | Box 124 \ 2 scan0362 | |
| The specifications of a 14 HP car, including its speedometer, wheelbase, and power/weight ratio. | 20th Sep 1941 | Box 124 \ 2 scan0363 | |
| Listing blueprints being sent for an R.A.F. B.80 Alum engine with a 3 1/4' bore. | 20th Sep 1941 | Box 124 \ 2 scan0364 | |
| Parts list for a Joint Washer and a Water Pump Casing with quantities. | 23th Sep 1941 | Box 124 \ 2 scan0365 | |
| Acknowledging a previous message and confirming instructions will be sent to Hythe Road. | 23th Sep 1941 | Box 124 \ 2 scan0366 | |
| Parts required for a B.60 2nd Engine, focusing on a Renolds chain-driven camshaft modification. | 23th Sep 1941 | Box 124 \ 2 scan0367 | |
| Continuation of a parts list detailing component replacements, exclusions, and modifications for an experimental build. | 23th Sep 1941 | Box 124 \ 2 scan0368 | |
| Specification revision for a Bentley chassis, detailing changes to the flywheel and clutch assembly. | 24th Sep 1941 | Box 124 \ 2 scan0369 | |
| Confirming the price of six steering cams is reasonable. | 6th Oct 1941 | Box 124 \ 2 scan0370 | |
| Requesting a report on a chain drive bench test and cylinder castings for the Senior Rationalised Range. | 7th Oct 1941 | Box 124 \ 2 scan0371 | |
| Minutes of a chassis meeting held at Clan Foundry regarding mileage, faults, and engine development. | 7th Oct 1941 | Box 124 \ 2 scan0372 | |
| Minutes of a chassis meeting held at Clan Foundry discussing mileage, faults, and engine developments. | 9th Oct 1941 | Box 124 \ 2 scan0373 | |
| Senior range engine development, chain sprockets for the Mark VI, and V.60 castings. | 11th Oct 1941 | Box 124 \ 2 scan0374 | |
| Memo on chassis engine development, detailing parts delays and a testing strategy to address 'running on'. | 1st Jan 1941 | Box 124 \ 2 scan0375 | |
| Progress report on the production of new six-cylinder engines, detailing castings, pistons, and gudgeon pins. | 16th Oct 1941 | Box 124 \ 2 scan0376 | |
| Confirming a telephone message, requesting the collection of patterns from the Iron Foundry to produce one 6-cylinder engine casting in aluminium. | 16th Oct 1941 | Box 124 \ 2 scan0377 | |
| Requesting the relocation of wheel changing kits and the fixing of S.U. starter carburettors on experimental cars. | 21th Oct 1941 | Box 124 \ 2 scan0378 | |
| Need to prototype the largest version of a new post-war six-cylinder engine. | 14th Dec 1941 | Box 124 \ 2 scan0379 | |
| Design and fitment of a special 25-gallon petrol tank for the Senior Range and Bentley 5 chassis. | 9th Jan 1942 | Box 124 \ 2 scan0380 | |
| List of failures experienced on car unit 3-B-60 No.4 up to a mileage of 50,524. | 18th Feb 1942 | Box 124 \ 2 scan0381 | |
| The fitting and performance of a cast iron water pump and rubber glands. | 18th Feb 1942 | Box 124 \ 2 scan0382 | |
| Accident damage repairs and part replacements for Chassis 30.G.VII Unit B.80.No.5. | 12th Mar 1942 | Box 124 \ 2 scan0383 | |
| Inspection and repair report detailing work on the front suspension, front dampers, and steering components. | 12th Mar 1942 | Box 124 \ 2 scan0384 | |
| Repairs and maintenance on a vehicle's steering, radiator, hubs, brakes, and engine. | 12th Mar 1942 | Box 124 \ 2 scan0385 | |
| Repairs to an engine, bonnet strips, and battery, including a list of personnel involved. | 12th Mar 1942 | Box 124 \ 2 scan0386 | |
| Specification of revisions for a Silver Riplet Chassis 1-RT-1 and Bentley 40 Unit No.1. | 26th Mar 1942 | Box 124 \ 2 scan0387 | |
| Suggestions for detail design simplification and rationalisation of the chassis and B.80 engine. | 3rd Nov 1943 | Box 124 \ 2 scan0388 | |
| List of engineering suggestions for engine and chassis design modifications, based on photographs. | 12th Jan 1944 | Box 124 \ 2 scan0389 | |
| Outlining the main problems with the 16 HP engine and proposed testing solutions. | 12th Jan 1944 | Box 124 \ 2 scan0390 | |
| Improvement of volumetric efficiency and flow through high power engine inlet valves and ports. | 15th Jan 1944 | Box 124 \ 2 scan0391 | |
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