| Description | Date | Identifier | |
| Experimental test report on the air silencer and distribution for a 25/30 HP engine. | 7th Jan 1937 | Box 155 \ 2 scan0028 | |
| Report concluding that a new system is significantly noisier and showed a 2% economy gain in bench tests, requiring further road tests. | 7th Jan 1937 | Box 155 \ 2 scan0029 | |
| Graph showing results from Test No. 4, plotting air/fuel ratio distribution for a standard open carburetter across different cylinder pairs. | 7th Jan 1937 | Box 155 \ 2 scan0030 | |
| Performance graph showing air/fuel ratio versus RPM for an air silencer under full and part load conditions. | 7th Jan 1937 | Box 155 \ 2 scan0031 | |
| Graph of Test No. 2 results for a Rocker Cover Air Silencer, showing Air/Fuel ratio vs R.P.M. for various cylinders at full and part throttle. | 7th Jan 1937 | Box 155 \ 2 scan0032 | |
| Graph comparing air/fuel ratios across different cylinders under full and part throttle conditions. | 12th Jan 1937 | Box 155 \ 2 scan0033 | |
| Programme of work for various engine test beds, detailing specific tasks and component assemblies. | 12th Jan 1937 | Box 155 \ 2 scan0034 | |
| Engine testing and modification report for a 25/30 BED model, detailing bearing replacement, endurance tests, and further cooling system trials. | 12th Jan 1937 | Box 155 \ 2 scan0035 | |
| Programme of test bed work for engine units from the Phantom III, Bentley, and Wraith models. | 18th Jan 1937 | Box 155 \ 2 scan0036 | |
| Engine test results and required modifications for multiple units. | 18th Jan 1937 | Box 155 \ 2 scan0037 | |
| Programme of test bed work for Phantom III, Bentley, and Wraith engine units. | 18th Jan 1937 | Box 155 \ 2 scan0038 | |
| Technical notes on engine testing, modifications, and troubleshooting for units W.1, O.H.C. No. 23, and C.15. | 18th Jan 1937 | Box 155 \ 2 scan0039 | |
| Rm/Swdl to HPS requesting a promise on a list of urgent jobs for various models. | 20th Jan 1937 | Box 155 \ 2 scan0040 | |
| Progress of urgent designed jobs for Bentley and Phantom III models. | 22th Jan 1937 | Box 155 \ 2 scan0041 | |
| The start of work on a new Test House and ensuring all necessary equipment is on order. | 28th Jan 1937 | Box 155 \ 2 scan0042 | |
| Programme of test bed work for the Phantom III, covering Continental Unit tests and a sump overfilling complaint. | 29th Jan 1937 | Box 155 \ 2 scan0043 | |
| Technical memorandum detailing engine testing, modifications, and issues for various car models. | 29th Jan 1937 | Box 155 \ 2 scan0044 | |
| Instructions for testing and comparing cylinder blocks and an external Packard damper. | 29th Jan 1937 | Box 155 \ 2 scan0045 | |
| Programme of test bed work for the Phantom III, including exhaust system comparisons and an investigation into oil overfilling. | 29th Jan 1937 | Box 155 \ 2 scan0046 | |
| Engine testing, modifications, and issues for Bentley, Wraith, and Phantom III models. | 29th Jan 1937 | Box 155 \ 2 scan0047 | |
| Work on units C.14 and C.15, involving parts comparison and endurance testing. | 29th Jan 1937 | Box 155 \ 2 scan0048 | |
| Programme of test bed work for Phantom III engines, detailing experiments and modifications. | 9th Feb 1937 | Box 155 \ 2 scan0049 | |
| Test procedures and investigations for various Bentley engine units, covering oil consumption, crank replacement, valve springs, and water leaks. | 9th Feb 1937 | Box 155 \ 2 scan0050 | |
| Test instructions and notes for various engine units, including a Bentley Unit. | 18th Feb 1937 | Box 155 \ 2 scan0051 | |
| Programme of test bed work for the O.H.C. Bentley Unit No. 23 and the Wraith No. 2. | 18th Feb 1937 | Box 155 \ 2 scan0052 | |
| Engine testing procedures for oil pressure, gears, bearings, and valve bounce. | 18th Feb 1937 | Box 155 \ 2 scan0053 | |
| Test procedures and observations for engine components, focusing on tappets, springs, and oil consumption. | 18th Feb 1937 | Box 155 \ 2 scan0054 | |
| Programme of test bed work for Wraith, Bentley, and other experimental engine units. | 27th Feb 1937 | Box 155 \ 2 scan0055 | |
| List of special parts and testing procedures for a Phantom III engine unit, numbered No.3. | 27th Feb 1937 | Box 155 \ 2 scan0056 | |
| Tappet clearance settings and comparative oil consumption test procedures for the Phantom No.6 unit. | 27th Feb 1937 | Box 155 \ 2 scan0057 | |
| Programme of test bed work for Wraith and Bentley engine units, detailing modifications and test procedures. | 27th Feb 1937 | Box 155 \ 2 scan0058 | |
| List of engine components and test specifications for a Phantom III unit. | 27th Feb 1937 | Box 155 \ 2 scan0059 | |
| Engine testing instructions for a Phantom No. 6 unit, focusing on tappet clearances and comparative oil consumption tests. | 27th Feb 1937 | Box 155 \ 2 scan0060 | |
| Programme of test bed work for the Wraith No.2, O.H.C. No. 23, and B-18 units. | 9th Mar 1937 | Box 155 \ 2 scan0061 | |
| Engine component endurance and performance testing procedures. | 27th Feb 1937 | Box 155 \ 2 scan0062 | |
| Requesting summary reports and details on tests carried out on engine test beds. | 16th Mar 1937 | Box 155 \ 2 scan0063 | |
| Programme of test bed work for O.H.C. No. 23 and B.18 units, including endurance, noise, and performance tests. | 16th Mar 1937 | Box 155 \ 2 scan0064 | |
| Ignition advance test procedures for an engine on test bed No. 5. | 16th Mar 1937 | Box 155 \ 2 scan0065 | |
| Summary report on fitting a unit with a modified crankshaft, specific bearings, and completing an endurance test. | 16th Mar 1937 | Box 155 \ 2 scan0066 | |
| Programme of test bed work for O.H.C. B.23 and B.17 units, detailing investigations on exhaust systems and oil pumps. | 23th Mar 1937 | Box 155 \ 2 scan0067 | |
| Engine testing procedures, including endurance tests, component analysis, and specific instructions for various units. | 23th Mar 1937 | Box 155 \ 2 scan0068 | |
| Outlining the status and requirements for endurance and consumption tests on units B.19 and B.9. | 23th Mar 1937 | Box 155 \ 2 scan0069 | |
| Programme of test bed work for O.H.C. unit B.23 outlining investigations, and noting unit B.24 is next for testing. | 2nd Apr 1937 | Box 155 \ 2 scan0070 | |
| Engine testing procedures and instructions for various units and components. | 2nd Apr 1937 | Box 155 \ 2 scan0071 | |
| List of new parts fitted to an engine and the subsequent testing programme. | 2nd Apr 1937 | Box 155 \ 2 scan0072 | |
| Programme of test bed work for various engine units and their components. | 9th Apr 1937 | Box 155 \ 2 scan0073 | |
| Required engine component tests, power curves, and preparations for various engine units. | 9th Apr 1937 | Box 155 \ 2 scan0074 | |
| Programme of test bed work for the Ph.III No.10 Unit, detailing preparatory tests before being fitted into car 33.EX. | 19th Apr 1937 | Box 155 \ 2 scan0075 | |
| Testing plans and specifications for various engine units and components. | 19th Apr 1937 | Box 155 \ 2 scan0076 | |
| Assembly instructions for unit B.20 to replace an O.H.C. unit, and a list of related running reports. | 19th Apr 1937 | Box 155 \ 2 scan0077 | |
| Test bed work programme for a Phantom III No.16 Unit, detailing non-standard parts and test procedures. | 28th Apr 1937 | Box 155 \ 2 scan0078 | |
| List of checks and modifications for engine valve gear lubrication and oil consumption. | 19th Apr 1937 | Box 155 \ 2 scan0079 | |
| Summary of endurance tests and instructions for engine units B.17, B.18, B.19, B.20, and Phantom III. | 19th Apr 1937 | Box 155 \ 2 scan0080 | |
| Test bed programme for a Phantom III No. 16 Unit, detailing special non-standard parts and planned work. | 28th Apr 1937 | Box 155 \ 2 scan0081 | |
| List of checks and modifications for engine valve gear lubrication and performance. | 19th Apr 1937 | Box 155 \ 2 scan0082 | |
| Progress and instruction report on endurance testing for various engine units. | 19th Apr 1937 | Box 155 \ 2 scan0083 | |
| Urgent internal request for the manufacture of 24 distributor governor springs using a different wire gauge. | 10th May 1937 | Box 155 \ 2 scan0084 | |
| Programme of test bed work for an engine unit with special non-standard parts, prior to a 15,000 miles test. | 10th May 1937 | Box 155 \ 2 scan0085 | |
| Required tests and modifications for various engine units. | 10th May 1937 | Box 155 \ 2 scan0086 | |
| Programme of test bed work for Ph.III. No.10 Unit, detailing new parts and test procedures. | 19th Apr 1937 | Box 155 \ 2 scan0087 | |
| The status and testing specifications for various engine units and components. | 19th Apr 1937 | Box 155 \ 2 scan0088 | |
| Details on the assembly of a B.20 unit to replace an O.H.C. unit, and a list of running reports for other units. | 19th Apr 1937 | Box 155 \ 2 scan0089 | |
| The programme of test bed work for various engine units and components. | 22th May 1937 | Box 155 \ 2 scan0090 | |
| Endurance test specifications for engine units B.19, B.24, and B.18, detailing new parts and testing parameters. | 22th May 1937 | Box 155 \ 2 scan0091 | |
| Programme of work outlining various engine test bed procedures and requirements. | 22th May 1937 | Box 155 \ 2 scan0092 | |
| Endurance test procedures and specifications for various engine units. | 6th Jun 1937 | Box 155 \ 2 scan0093 | |
| Requesting performance comparisons on a test bed are made with the standard silencer and chassis layout. | 6th Jun 1937 | Box 155 \ 2 scan0094 | |
| Programme of test bed work for the Wraith III No.1 Unit, detailing investigations into engine components and performance. | 8th Jun 1937 | Box 155 \ 2 scan0095 | |
| Instructions for endurance checks and component testing on various engine units, including a Phantom III. | 8th Jun 1937 | Box 155 \ 2 scan0096 | |
| Programme of test bed work for the Wraith III No.1 Unit, investigating noise, performance, and lubrication. | 8th Jun 1937 | Box 155 \ 2 scan0097 | |
| Instructions for endurance tests and checks on various engine components, including a Phantom III unit. | 8th Jun 1937 | Box 155 \ 2 scan0098 | |
| Programme of test bed work for a Wraith III No.1 Unit, detailing various endurance and performance trials. | 15th Jun 1937 | Box 155 \ 2 scan0099 | |
| Continued testing instructions for B.24, Phantom No.3 Unit, and B.9, involving part fitting and performance tests. | 15th Jun 1937 | Box 155 \ 2 scan0100 | |
| Power and detonation tests on a single cylinder unit, examining compression ratio, timing, and valve head design. | 15th Jun 1937 | Box 155 \ 2 scan0101 | |
| Request to expedite job Ex.28029 for a torsional indicator to compare various crankshaft dampers. | 18th Jun 1937 | Box 155 \ 2 scan0102 | |
| Programme of test bed work for Wraith No.1 and No.2 units, detailing tappet noise investigation and new parts for a 15,000-mile test. | 24th Jun 1937 | Box 155 \ 2 scan0103 | |
| List of engine tests to be included, covering running-in, performance, and component checks for specific units. | 24th Jun 1937 | Box 155 \ 2 scan0104 | |
| List of required engine tests, modifications, and component checks for various units. | 24th Jun 1937 | Box 155 \ 2 scan0105 | |
| Page detailing tests including freezing a Bentley cylinder block and comparative power and detonation tests on a single-cylinder unit. | 30th Jun 1937 | Box 155 \ 2 scan0106 | |
| Request to refit a battery conduit wire on a Phantom III test bed due to shorting and fire risk. | 30th Jun 1937 | Box 155 \ 2 scan0107 | |
| Programme of test bed work for a Wraith No.2 unit, detailing tests on gears, damper loadings, and oil heat flow. | 30th Jun 1937 | Box 155 \ 2 scan0108 | |
| Test procedure document outlining oil temperature checks and investigations into crankshaft and unit performance. | 30th Jun 1937 | Box 155 \ 2 scan0109 | |
| Engine testing procedures for the Phantom No.3, B.9, and a Single Cylinder Unit. | 30th Jun 1937 | Box 155 \ 2 scan0110 | |
| Request to replace an undersized water feed pipe for a D.P.X.4 dynamometer to resolve issues with holding a Ph.III unit at a constant speed. | 1st Jul 1937 | Box 155 \ 2 scan0111 | |
| Programme of test bed work for the Wraith III No.3 unit. | 6th Jul 1937 | Box 155 \ 2 scan0112 | |
| List of engine testing procedures and checks for various components and configurations. | 6th Jul 1937 | Box 155 \ 2 scan0113 | |
| The position of and tests being carried out on Wraith III, II, and 25/30 units. | 13th Jul 1937 | Box 155 \ 2 scan0114 | |
| Specifications for various engine units detailing modifications and components. | 13th Jul 1937 | Box 155 \ 2 scan0115 | |
| Specifications for various engine units including U-7-S, W.7.2, and Wraith II. | 13th Jul 1937 | Box 155 \ 2 scan0116 | |
| Specification sheet for Wraith III engine units No. 1, No. 2, and No. 3 (Test Bed). | 13th Jul 1937 | Box 155 \ 2 scan0117 | |
| Programme of test bed work for Wraith No. 4 and No. 3 engine units. | 16th Jul 1937 | Box 155 \ 2 scan0118 | |
| Technical progress report on various component tests and parts for multiple car models. | 16th Jul 1937 | Box 155 \ 2 scan0119 | |
| Note concerning the completion of test tackle for fitting the No.6 unit to the Phantom III. | 16th Jul 1937 | Box 155 \ 2 scan0120 | |
| Programme of test bed work for a Wraith III No.2 unit, focusing on oil leaks and supply distribution. | 3rd Aug 1937 | Box 155 \ 2 scan0121 | |
| Test procedures for engine units, including comparative analysis of exhaust and induction systems. | 3rd Aug 1937 | Box 155 \ 2 scan0122 | |
| Request to Mr. Peskett to cover the benches in test house No.5 with aluminium sheet. | 3rd Aug 1937 | Box 155 \ 2 scan0123 | |
| Engine endurance and component testing report for Bentley and Phantom III units. | 3rd Aug 1937 | Box 155 \ 2 scan0124 | |
| Test bed programme for the Wraith III No.5 Unit, detailing special parts and performance checks. | 18th Aug 1937 | Box 155 \ 2 scan0125 | |
| List of engineering tasks, checks, and tests for specific vehicle units and test beds. | 18th Aug 1937 | Box 155 \ 2 scan0126 | |
| List of tasks for testing engine components including Bentley Units, pistons, and valve springs. | 3rd Aug 1937 | Box 155 \ 2 scan0127 | |
| | | | |
