| Description | Date | Identifier | |
| Test report comparing bearing wear and oil flow times for several Bentley chassis. | 26th Aug 1938 | Box 103 \ 2 scan0080 | |
| Log sheet detailing vehicle complaints, test results, and measurements for four different owners. | 26th Aug 1938 | Box 103 \ 2 scan0081 | |
| Log of vehicle test results, owner complaints, and measurements for four separate vehicles. | 26th Aug 1938 | Box 103 \ 2 scan0082 | |
| Log of vehicle test results, owner complaints, and related measurements. | 26th Aug 1938 | Box 103 \ 2 scan0083 | |
| Log of vehicle test results and complaints for four different owners. | 26th Aug 1938 | Box 103 \ 2 scan0084 | |
| Log sheet detailing test results for four different jobs or vehicles. | 11th Aug 1938 | Box 103 \ 2 scan0085 | |
| Cylinder block and piston measurements with associated vehicle service history for a Bentley. | 11th Aug 1938 | Box 103 \ 2 scan0086 | |
| Vehicle component checks, mileage, and observations on the owner's driving style. | 11th Aug 1938 | Box 103 \ 2 scan0087 | |
| Oil consumption threshold for cylinder re-grinding from a customer's perspective. | 16th Jun 1938 | Box 103 \ 2 scan0088 | |
| Report on cylinder rebores for the month of May, including case examples and general reasons for regrinding. | 10th Jun 1938 | Box 103 \ 2 scan0089 | |
| List of Bentley chassis fitted with replacement cylinder blocks during March 1938. | 2nd Apr 1938 | Box 103 \ 2 scan0090 | |
| Cylinder wear measurements for various chassis taken during March 1938. | 31th Mar 1938 | Box 103 \ 2 scan0091 | |
| Log sheet from March 1938 detailing numerical measurements and remarks for various chassis. | 1st Mar 1938 | Box 103 \ 2 scan0092 | |
| Graph on Bentley cylinder bore wear. | 2nd Apr 1938 | Box 103 \ 2 scan0093 | |
| Graphical comparison of rebored cylinder block wear and piston mileage across different series. | 31th Mar 1938 | Box 103 \ 2 scan0094 | |
| Confirming a telephonic request regarding Bentley cylinder wear and the dispatch of a cylinder block for inspection. | 26th Mar 1938 | Box 103 \ 2 scan0095 | |
| Cylinder re-boring intervals and related maintenance for Bentley cars based on mileage and usage. | 25th Mar 1938 | Box 103 \ 2 scan0096 | |
| Severe case of exhaust valve seat hammering in a Bentley B.19.KU cylinder head. | 30th Dec 1937 | Box 103 \ 2 scan0097 | |
| Query regarding the primary reasons for cylinder re-grinds and the associated customer costs. | 2nd Jun 1938 | Box 103 \ 2 scan0098 | |
| Wear measurements for engine bores and pistons for chassis B.86.G.A. | 11th Dec 1934 | Box 103 \ 2 scan0099 | |
| Service complaints of sticking throttle controls on Bentley cars and the proposed solution. | 22th May 1937 | Box 103 \ 2 scan0100 | |
| Bentley car towed in due to engine bearing trouble and the findings upon dismantling. | 11th May 1937 | Box 103 \ 2 scan0101 | |
| Figures of excessive cylinder wear on a vehicle, with notes on its ownership history. | 7th Apr 1937 | Box 103 \ 2 scan0102 | |
| Complaint of poor oil consumption for a Bentley chassis, detailing engine replacement and testing. | 5th Apr 1937 | Box 103 \ 2 scan0103 | |
| Engine and road tests to determine the oil consumption for a Bentley Chassis. | 5th Apr 1937 | Box 103 \ 2 scan0104 | |
| Distortion in a 4¼ Litre Bentley Cylinder Head and proposing modifications to the heat treatment. | 31th Mar 1937 | Box 103 \ 2 scan0105 | |
| Customer complaints and analysis regarding excessive oil consumption in Bentley vehicles. | 31th Aug 1936 | Box 103 \ 2 scan0106 | |
| Investigation into water leaks from a Bentley cylinder plate and water bend joint, detailing causes and recommended solutions. | 31th Mar 1937 | Box 103 \ 2 scan0107 | |
| Apologizing for a delay caused by an investigation into poor oil consumption on a Bentley chassis B.97.GP. | 20th Mar 1937 | Box 103 \ 2 scan0108 | |
| Specifying the correct replacement part number for broken Bentley exhaust manifold studs. | 22th Mar 1937 | Box 103 \ 2 scan0109 | |
| Flatness error discovered during testing of Bentley cylinder heads. | 24th Mar 1937 | Box 103 \ 2 scan0110 | |
| 4¼-litre chassis with excessive oil consumption being returned for investigation. | 24th Mar 1937 | Box 103 \ 2 scan0111 | |
| Customer annoyance over a prolonged delay caused by experiments on their car. | 22th Mar 1937 | Box 103 \ 2 scan0112 | |
| Issues with Bentley piston rings, comparing heat stressed vs. hammered stressed types. | 11th Mar 1937 | Box 103 \ 2 scan0113 | |
| Investigation into high oil consumption in 4¼-litre Bentley engines, finding cylinder heads were hollow. | 9th Mar 1931 | Box 103 \ 2 scan0114 | |
| Sparking plug tests conducted on two chassis to investigate complaints of misfires. | 5th Feb 1937 | Box 103 \ 2 scan0115 | |
| Cylinder wear caused by S.U. carburetters and cold starting procedures. | 6th Feb 1937 | Box 103 \ 2 scan0116 | |
| Response memo addressing issues with mixture controls, trial cars, and sparking plugs. | 4th Feb 1937 | Box 103 \ 2 scan0117 | |
| Logistics and progress of 15,000-mile car testing involving chassis 6B4 and 3B4. | 4th Feb 1937 | Box 103 \ 2 scan0118 | |
| Blueprint diagram showing a modification for a Bentley 25/30 cylinder to address cracking. | 2nd Feb 1937 | Box 103 \ 2 scan0119 | |
| Cylinder block wear, linking it to the carburettor's strangling action during starting and proposing a control modification. | 2nd Feb 1937 | Box 103 \ 2 scan0120 | |
| Cracking cylinder blocks on Bentley and 25/30 models due to the water pump inlet studs, with a suggested design alteration. | 1st Feb 1937 | Box 103 \ 2 scan0121 | |
| Potential clogging of Voke's air filters on Bentleys and proposing tests on an oilcarb cleaner for the Phantom III model in Africa. | 25th Jan 1937 | Box 103 \ 2 scan0122 | |
| Broken valve spring for Bentley chassis B.30-HK, belonging to Capt. J.P. Howey. | 7th Jan 1937 | Box 103 \ 2 scan0123 | |
| The return of damaged parts removed from chassis B.30.HK. | 2nd Jan 1937 | Box 103 \ 2 scan0124 | |
| Cover sheet regarding the seizure of big end bearings. | 1st Dec 1936 | Box 103 \ 2 scan0125 | |
| Cylinder bore regrinds and resulting oil consumption figures for various cars. | 22th Dec 1936 | Box 103 \ 2 scan0126 | |
| Issues with Bentley cylinder blocks, rectifications by grinding, and piston ring performance. | 7th Dec 1936 | Box 103 \ 2 scan0127 | |
| Inspection and investigation of Bentley cylinder blocks. | 3rd Dec 1936 | Box 103 \ 2 scan0128 | |
| Cylinder bore wear for a Bentley 3½-Litre, chassis B.3.CW. | 22th Dec 1936 | Box 103 \ 2 scan0129 | |
| Big end bearing failure and comparing cylinder honing versus grinding techniques. | 30th Nov 1936 | Box 103 \ 2 scan0130 | |
| The grinding and sizing issues of two Bentley cylinder blocks. | 30th Nov 1936 | Box 103 \ 2 scan0131 | |
| Cover note for correspondence regarding the grinding of cylinder bores. | 25th Nov 1936 | Box 103 \ 2 scan0132 | |
| Cost breakdown and charges for engine regrinding and new pistons. | 23th Nov 1936 | Box 103 \ 2 scan0133 | |
| Comparative costs of regrinding cylinders at Derby and London. | 21th Nov 1936 | Box 103 \ 2 scan0134 | |
| Comparative cost analysis for oversize cylinder bore services between Derby and London. | 20th Nov 1936 | Box 103 \ 2 scan0135 | |
| Supervising 10,000-mile tests, investigating owner complaints, and managing repairs. | 18th Nov 1936 | Box 103 \ 2 scan0136 | |
| Issues with noisy tappets in 3½ & 4¼-Litre Bentley engines caused by bent and worn push rods. | 18th Nov 1936 | Box 103 \ 2 scan0137 | |
| Cover note for enclosed information regarding Bentley Fabroil Timing Gears. | 11th Nov 1936 | Box 103 \ 2 scan0138 | |
| Complaints of bending push rods on the Bentley chassis and proposed material modifications. | 17th Nov 1936 | Box 103 \ 2 scan0139 | |
| Increasing complaints of bending push rods on the 4 1/4 litre Bentley engine. | 13th Nov 1936 | Box 103 \ 2 scan0140 | |
| The despatch of two Bentley cylinder blocks to the Kingsbury Service Station. | 21th Nov 1936 | Box 103 \ 2 scan0141 | |
| Poor finish of replacement cylinder bores for 3 1/2-litre Bentley engines, its impact on oil consumption and other issues. | 10th Nov 1936 | Box 103 \ 2 scan0142 | |
| Cylinder bore finish, its effect on oil consumption, and comparing grinding versus mirror finishing techniques. | 10th Jan 1936 | Box 103 \ 2 scan0143 | |
| Oil consumption and a comparison between cars with and without 'L' shaped rings during London Trials. | 2nd Nov 1936 | Box 103 \ 2 scan0144 | |
| Short memo thanking for further information on Bentley cylinder bore wear. | 9th Oct 1936 | Box 103 \ 2 scan0145 | |
| Enclosed cylinder wear results for a Bentley from Kingsbury, with further results expected from Paris. | 8th Oct 1936 | Box 103 \ 2 scan0146 | |
| The examination of a Bentley B-8-GA cylinder block and piston rings due to excessive oil consumption. | 24th Sep 1936 | Box 103 \ 2 scan0147 | |
| Stripping down a 6-B-IV engine for inspection of its crank journals and bearings. | 24th Sep 1936 | Box 103 \ 2 scan0148 | |
| Blueprint showing cylinder wear measurements for the Paris Trials Car B 8 G.A. cylinder block. | 24th Sep 1936 | Box 103 \ 2 scan0149 | |
| Measurement chart for the B8 G.A. Cylinder Block from the Paris Trials Car. | 24th Sep 1936 | Box 103 \ 2 scan0150 | |
| On the resolution of excessive oil consumption after fitting oversized cylinders and pistons to a Kingsbury. | 18th Sep 1936 | Box 103 \ 2 scan0151 | |
| Cylinder wear, replacements, and regrinding procedures. | 2nd Sep 1936 | Box 103 \ 2 scan0152 | |
| Report from J.B. Dixon to GWH detailing issues with valve gear, brake squeaks, and oil consumption on specific vehicles. | 10th Jul 1936 | Box 103 \ 2 scan0153 | |
| Re-boring limits for Bentley cylinders. | 6th Jul 1936 | Box 103 \ 2 scan0154 | |
| Typed memo discussing customer complaints and repair policies for Bentley vehicles. | 3rd Jul 1936 | Box 103 \ 2 scan0155 | |
| Modifications and experiments for EAC & Goshawk connecting rods. | 12th Jun 1925 | Box 103 \ 2 scan0156 | |
| Proposed redesign of the 20 HP chassis connecting rods based on the Phantom model. | 7th Jan 1926 | Box 103 \ 2 scan0157 | |
| Instruction regarding the use of connecting rods with separate liners for the 20 HP model's 10,000-mile run. | 19th Jan 1926 | Box 103 \ 2 scan0158 | |
| Design modifications for connecting rods on a 20 HP car. | 23th Jan 1926 | Box 103 \ 2 scan0159 | |
| Standardisation of chassis parts for connecting rods with loose big end bearings. | 18th May 1926 | Box 103 \ 2 scan0160 | |
| Report regarding complaints from the Sydney repair depot about blocked oil leads in 20 HP engines. | 31th Mar 1927 | Box 103 \ 2 scan0161 | |
| Report comparing the weights of tubular section connecting rods from various car models. | 18th Oct 1927 | Box 103 \ 2 scan0162 | |
| Comparison of engine component dimensions and weights for 20 HP, Lorraine, 40/50 HP, and Hispano engines. | 21th Oct 1927 | Box 103 \ 2 scan0163 | |
| Issue of choked oil tubes in 20HP Connecting Rods. | 21th Oct 1927 | Box 103 \ 2 scan0164 | |
| Modifications to the 20 HP crankshaft and connecting rod, increasing dimensions and introducing a new tubular pattern rod. | 12th Oct 1927 | Box 103 \ 2 scan0165 | |
| Letter discussing clogged oil passages in gudgeon pin bushes and potential causes of heavy carbon deposits. | 14th Mar 1928 | Box 103 \ 2 scan0166 | |
| Connecting rod oil pipe obstruction and a related laboratory report. | 13th Apr 1928 | Box 103 \ 2 scan0167 | |
| Laboratory report on deposits from oilways of connecting rods and gudgeon pin bushes. | 14th Feb 1928 | Box 103 \ 2 scan0168 | |
| Secret memo comparing two connecting rod designs (E.55304/5 and LeC.2703) for the China Chassis. | 3rd Jun 1929 | Box 103 \ 2 scan0169 | |
| The specification for China Chassis connecting rods. | 6th Jun 1929 | Box 103 \ 2 scan0170 | |
| Design decisions for connecting rods across various engine types. | 19th Nov 1930 | Box 103 \ 2 scan0171 | |
| Specification note on the design of rods and the lining of mild steel bushes. | 11th Jan 1931 | Box 103 \ 2 scan0172 | |
| Connecting rod length for the Improved 25HP model, analyzing its impact on engine vibration and inertia with a comparative graph. | 11th Jan 1931 | Box 103 \ 2 scan0173 | |
| Table and notes detailing actual rod lengths for different engine specifications. | 16th Jan 1931 | Box 103 \ 2 scan0174 | |
| Ratio of connecting rod to stroke for 25HP and 45HP car engines. | 16th Jan 1931 | Box 103 \ 2 scan0175 | |
| Calculations on crank radius to rod length ratio and its effect on engine forces and flywheel inertia. | 29th Jan 1931 | Box 103 \ 2 scan0176 | |
| Engine design choices including crank pins, governors, and connecting rod lengths for the 'JAPAN 3. ENGINE'. | 29th Jan 1931 | Box 103 \ 2 scan0177 | |
| Issue where the connecting rod big end no longer fits through the cylinder bore. | 7th Feb 1931 | Box 103 \ 2 scan0178 | |
| Fitting 'Japan' connecting rods to 'China' engines to achieve higher compression ratios. | 11th Jul 1931 | Box 103 \ 2 scan0179 | |
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