| Description | Date | Identifier | |
| Confirming the issue of four blueprints for an Inlet Pipe (Ex.S.1346) for the Bentley V. Chassis. | 30th Dec 1938 | Box 99 \ 1 scan0036 | |
| Requesting instruction to release altered drawings for the B.V. Induction System, deleting automatic devices and retaining hand control. | 25th Feb 1939 | Box 99 \ 1 scan0037 | |
| The issue of blueprints for a modernised induction pipe (EXS.1507) for the Bentley V chassis. | 1st Mar 1939 | Box 99 \ 1 scan0038 | |
| Cancelling instructions for a hand mixture control and reverting to the automatic starting carburetter. | 13th Mar 1939 | Box 99 \ 1 scan0039 | |
| Issuing blueprints for a Support Bracket for the Carburettor Air Silencer on a Bentley V Chassis. | 17th Mar 1939 | Box 99 \ 1 scan0040 | |
| Modifications to the engine controls for the Bentley V model. | 21th Mar 1939 | Box 99 \ 1 scan0041 | |
| Agreeing to proposals concerning the B.V. Induction System. | 22th Mar 1939 | Box 99 \ 1 scan0042 | |
| Request for a revised scheme for the B.V. Induction System to incorporate fully automatic mixture control on S.U. carburettors. | 1st Apr 1939 | Box 99 \ 1 scan0043 | |
| Specification sheet for the S.U. Carburetter Type H.4 with an automatic starting device. | 19th Apr 1939 | Box 99 \ 1 scan0044 | |
| Modification to the throttle controls on the Bentley V engine to cure a persistent rattle. | 21th Apr 1939 | Box 99 \ 1 scan0045 | |
| Modification of throttle controls for the Bentley V engine to cure a rattle. | 21th Apr 1939 | Box 99 \ 1 scan0046 | |
| Instruction to hold up the supply of S.U. Carburetter and Induction Pipe for the Bentley 5 model. | 26th Apr 1939 | Box 99 \ 1 scan0047 | |
| Proposing a modified throttle control scheme for Bentley V cars for production. | 3rd May 1939 | Box 99 \ 1 scan0048 | |
| Requesting a drawing for an alteration to the Bentley V automatic carburation system to improve fuel distribution. | 12th May 1939 | Box 99 \ 1 scan0049 | |
| New design for a Bentley V induction manifold with a cast-in starter passage. | 25th May 1939 | Box 99 \ 1 scan0050 | |
| Modifications to the Bentley V S.U. starter carburetter to prevent it from freezing up. | 25th May 1939 | Box 99 \ 1 scan0051 | |
| Modification of the induction pipe and starter carburetter connections using a cast starter passage. | 2nd Jun 1939 | Box 99 \ 1 scan0052 | |
| Fitting induction manifolds (EB.4995) for production confirmation trials. | 30th Jun 1939 | Box 99 \ 1 scan0053 | |
| Request to revert modifications to S.U. Startex Needles due to the new design being useless. | 10th Jul 1939 | Box 99 \ 1 scan0054 | |
| Requesting a report on the B.V. starting carburetter and induction pipe programme. | 3rd Aug 1939 | Box 99 \ 1 scan0055 | |
| Modification to the cast-in starter passage for the B.V. model, highlighting the process for production parts. | 22th Aug 1939 | Box 99 \ 1 scan0056 | |
| Comparison of two inlet pipe designs for the B.V. induction system to improve starting mixture distribution. | 22th Aug 1939 | Box 99 \ 1 scan0057 | |
| Modifications to induction pipes on early production Corniche units. | 22th Aug 1939 | Box 99 \ 1 scan0058 | |
| Hole to be added to the cast-in starter passage for the B.V. and Corniche models. | 23th Aug 1939 | Box 99 \ 1 scan0059 | |
| Summary report on the disadvantages of the Bentley V. S.U. Startex Carburetter and proposed solutions. | 21th Feb 1940 | Box 99 \ 1 scan0060 | |
| The disadvantages and potential modifications for the Bentley V, S.U. Startex carburetter. | 21th Feb 1940 | Box 99 \ 1 scan0061 | |
| Carburetter modifications and design considerations to prevent icing and improve starting. | 1st Aug 1940 | Box 99 \ 1 scan0062 | |
| Analysis of engine starting problems, including freezing in rich positions and bad fuel distribution. | 21th Feb 1940 | Box 99 \ 1 scan0063 | |
| Schematic comparing the Standard S.U. Startex with two proposed antifreeze schemes. | 16th Feb 1940 | Box 99 \ 1 scan0064 | |
| Requesting a covering order for an anticipated charge for an instrument overhaul. | 28th Mar 1940 | Box 99 \ 1 scan0065 | |
| Request for details on the Startex anti-freeze scheme for the Bentley V S.U. Startex Carburetter. | 13th May 1940 | Box 99 \ 1 scan0066 | |
| Freezing defect in the B.V. starting carburettor and the decision to implement Scheme 1. | 25th Apr 1940 | Box 99 \ 1 scan0067 | |
| Modification to the S.U. Startex carburetter to prevent freezing up. | 29th May 1940 | Box 99 \ 1 scan0068 | |
| Bentley publicity, car trials, and gearbox modifications. | 13th Feb 1941 | Box 99 \ 1 scan0069 | |
| Correspondence with S.U. Carburetter Co. Ltd. regarding throttle body distortion and potential reversion to original type carburettors for the Bentley V. | 16th Feb 1941 | Box 99 \ 1 scan0070 | |
| Confirming a discussion about B.V. Carburation and potential reversion to B.II carburetters. | 27th Feb 1941 | Box 99 \ 1 scan0071 | |
| The agreed test programme for carburetter performance on the Bentley V model. | 28th Feb 1941 | Box 99 \ 1 scan0072 | |
| Request to the S.U. Carburetter Co Ltd. for the supply of specific carburetter needles. | 25th Mar 1941 | Box 99 \ 1 scan0073 | |
| Outlining the next steps for testing B.V. carburation systems. | 2nd Jul 1941 | Box 99 \ 1 scan0074 | |
| Arguing against making the Bentley III flywheel and clutch identical with the Wraith III, recommending the retention of the standard 10' clutch. | 21th Apr 1937 | Box 99 \ 1 scan0075 | |
| Short memo regarding the specifications for the Bentley III clutch. | 23th Aug 1937 | Box 99 \ 1 scan0076 | |
| The design of the clutch casing and clutch actuation for the Bentley 111 model. | 23th Aug 1937 | Box 99 \ 1 scan0077 | |
| The Bentley 111 Clutch Casing and Clutch Actuation. | 25th Aug 1937 | Box 99 \ 1 scan0078 | |
| The clutch assembly for the Wraith III and Bentley III models. | 11th Nov 1937 | Box 99 \ 1 scan0079 | |
| Modifications to the crankcase and clutch casing for the Wraith and Bentley 111 models. | 10th Mar 1938 | Box 99 \ 1 scan0080 | |
| Comparing a 10-inch and 11-inch clutch for the Bentley III & 50 chassis, recommending the smaller size. | 5th Aug 1938 | Box 99 \ 1 scan0081 | |
| Instruction memo regarding the fitting of a new flexible flywheel and clutch to a chassis unit. | 9th Aug 1938 | Box 99 \ 1 scan0082 | |
| The flywheel and clutch, specifically changing from an 11-inch to a 10-inch clutch on Bentley units. | 26th Oct 1938 | Box 99 \ 1 scan0083 | |
| B.III and B.50 flywheel and clutch. | 2nd Nov 1938 | Box 99 \ 1 scan0084 | |
| Confirming receipt of Bentley III 'Top Dog' clutch facings and requesting an official order. | 7th Nov 1938 | Box 99 \ 1 scan0085 | |
| Flywheels for B.III units numbers 6 and 7. | 11th Nov 1938 | Box 99 \ 1 scan0086 | |
| Confirming an agreement to fit a Wraith type standard flywheel and clutch to get an engine running, with a request for a future replacement. | 16th Nov 1938 | Box 99 \ 1 scan0087 | |
| Fitting a new clutch pedal mechanism to car 9.B.V. | 22th Dec 1938 | Box 99 \ 1 scan0088 | |
| To hold the sinking of dies for a Bentley V clutch pedal due to a contemplated alteration. | 4th Jan 1939 | Box 99 \ 1 scan0089 | |
| Production of B.V. Flywheels and their required components from specific forgings. | 11th Jan 1939 | Box 99 \ 1 scan0090 | |
| Requesting new drawings for a flexible flywheel and 10 inch clutch for experimental production. | 13th Jan 1939 | Box 99 \ 1 scan0091 | |
| Instruction to fit a flexible flywheel with a 10' Long clutch to Unit B.V.4, Chassis 9.B.V. | 27th Feb 1939 | Box 99 \ 1 scan0092 | |
| Alterations for a flexible flywheel disc for a Bentley V, including a sketch. | 20th Apr 1939 | Box 99 \ 1 scan0093 | |
| Requesting the preparation and testing of a new flat disc flywheel for a Bentley V engine. | 26th Apr 1939 | Box 99 \ 1 scan0094 | |
| Drawing for a special spigot bearing housing for the Bentley V flywheel. | 8th Jul 1939 | Box 99 \ 1 scan0095 | |
| Alteration instructions for the Bentley V. Clutch friction face, part number GB.4416. | 17th Jul 1939 | Box 99 \ 1 scan0096 | |
| Letter to Borg & Beck Co. Ltd. regarding difficulties with a new 10' Long Clutch. | 18th Aug 1939 | Box 99 \ 1 scan0097 | |
| Issues and agreed arrangements for the Bentley V Long 10' Clutch with supplier Borg & Beck. | 17th Aug 1939 | Box 99 \ 1 scan0098 | |
| Difficulties with balancing clutches due to flywheel hole inconsistencies and cover pressing distortion. | 17th Aug 1939 | Box 99 \ 1 scan0099 | |
| Requesting the thrust race to be changed on car 10-B-V. | 8th Apr 1940 | Box 99 \ 1 scan0100 | |
| Confirming the replacement of a failed clutch throwout bearing and modification of the trunnion housing. | 13th Apr 1940 | Box 99 \ 1 scan0101 | |
| Testing 10' clutch discs to diagnose and resolve transmission rattle issues. | 30th Jun 1941 | Box 99 \ 1 scan0102 | |
| Graph plotting the results of a torsional deflection test on a 10 inch clutch disc. | 27th Jun 1941 | Box 99 \ 1 scan0103 | |
| Note about a connecting rod bush without shims for a Wraith III and Bentley III. | 8th Feb 1938 | Box 99 \ 1 scan0104 | |
| Wraith III and Bentley III Connecting Rods. | 15th Sep 1937 | Box 99 \ 1 scan0105 | |
| Note regarding a Wraith III or Bentley III crankshaft with Packard type balance weights. | 18th Jan 1938 | Box 99 \ 1 scan0106 | |
| Standardisation of turned finish for Wraith III and Bentley III crankshafts following a 40hr endurance test. | 13th May 1938 | Box 99 \ 1 scan0107 | |
| Concerning the Spring Drive and Crankshaft Damper for Wraith III, B.III and B.50 models. | 4th Aug 1938 | Box 99 \ 1 scan0108 | |
| Specifications for the Bentley 111 cylinder head and valves. | 7th Oct 1937 | Box 99 \ 1 scan0109 | |
| Recommendations for the Bentley III cylinder head design and testing. | 11th Oct 1937 | Box 99 \ 1 scan0110 | |
| Order request for 6 experimental cylinder head gaskets made from Klingerit 1000 material for a Bentley III. | 11th Oct 1937 | Box 99 \ 1 scan0111 | |
| Parts list concerning a modified fan adjustment for a Bentley 111 Chassis. | 5th Apr 1938 | Box 99 \ 1 scan0112 | |
| Scheme to modify fan adjustment to align with the Wraith III for experimental purposes. | 5th Apr 1938 | Box 99 \ 1 scan0113 | |
| Modified fan adjustment for the Bentley III chassis, listing required and obsolete parts. | 6th Apr 1938 | Box 99 \ 1 scan0114 | |
| Instructions regarding modifications to the Bentley III Chassis Cylinder Head for increased push rod clearance. | 5th Jul 1938 | Box 99 \ 1 scan0115 | |
| Note regarding W.III & B.III cylinder blocks, referencing another file. | 1st Sep 1938 | Box 99 \ 1 scan0116 | |
| Requesting the inclusion of modified cylinder blocks for B.III & Wraith III units to assist the foundry and create an economy in production. | 9th Sep 1938 | Box 99 \ 1 scan0117 | |
| Modification memo regarding the cylinder head gasket for the B.III and Wraith cored cylinder block. | 15th Sep 1938 | Box 99 \ 1 scan0118 | |
| Request for a new drawing for a modified and strengthened Wraith & B.III cylinder head. | 8th Nov 1938 | Box 99 \ 1 scan0119 | |
| Supply of two blueprints for a Bentley 111 cylinder head. | 21th Nov 1938 | Box 99 \ 1 scan0120 | |
| Requesting the production of new Bentley V cylinder blocks and heads from alternative alloys due to cracking issues. | 1st Apr 1939 | Box 99 \ 1 scan0121 | |
| Proposed alteration to the cylinder head of the Wraith III and Bentley III models to improve valve seat cooling. | 11th May 1939 | Box 99 \ 1 scan0122 | |
| Advisability of introducing a raised engine mounting on the Bentley. | 18th Jun 1937 | Box 99 \ 1 scan0123 | |
| Detachable rear engine support brackets for the Bentley lll. | 7th Oct 1937 | Box 99 \ 1 scan0124 | |
| Query regarding engine dimensions for a Wraith engine fitted with Bentley carburettors and air silencer. | 25th Oct 1937 | Box 99 \ 1 scan0125 | |
| Sketch of the standard Bentley carburettors, air intake, and silencer arrangement with key dimensions. | 16th Nov 1937 | Box 99 \ 1 scan0126 | |
| Variance in mathematical calculations for the Bentley III engine mounting position. | 16th Nov 1937 | Box 99 \ 1 scan0127 | |
| High front engine mounting with an offset nose for the Bentley 111. | 3rd Dec 1937 | Box 99 \ 1 scan0128 | |
| Temporary scheme for a torque re-action damper for the Bentley 111 model. | 9th Dec 1937 | Box 99 \ 1 scan0129 | |
| Revised rear engine support brackets for the Bentley 111 to suit a modified chassis frame. | 17th Dec 1937 | Box 99 \ 1 scan0130 | |
| Engine rear suspension for the first Bentley 111 chassis, model 422. | 21th Dec 1937 | Box 99 \ 1 scan0131 | |
| Requesting the use of existing standard engine rubber mountings in new designs to save time and money. | 17th Mar 1938 | Box 99 \ 1 scan0132 | |
| Proposal for the Bentley 111 engine rear suspension, referencing drawing G.CD.543 and comparing it to the Wraith III. | 18th Mar 1938 | Box 99 \ 1 scan0133 | |
| Modifications to the Bentley 111 rear engine suspension to reduce gear change lever movement. | 29th Aug 1938 | Box 99 \ 1 scan0134 | |
| Recurring breakages of Bentley III engine mounting brackets and a request for inspection. | 31th Oct 1938 | Box 99 \ 1 scan0135 | |
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