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| AEC Engines of the Post-war Years. Apart from there being Vertical (AV) and Horizontal (AH) versions of AEC's 6-cylinder in-line engines, there were many variants of these types, providing alternative power outputs; different maximum speeds; alternative fan types; alternative sumps; alternative fuel pumps, electrical equipment, etc. A V8 series of 8-cylinder vee-engines, as per the illustration, was also available in the latter years. AEC Engines were not only built for use in their own Goods and Passenger chassis, but as Stationary Units, Railcar Units, Marine Units, and for use by other commercial vehicle builders. The 6-cylinder in-line units were based around two main engine blocks. As bore diameters and outputs for each of these types increased, so their mounted auxiliary equipment also increased in size, so that, eg., an AV760 engine would not easily replace an AV690. The V8 units were 8-cylinder, 90-degree-Vee units. Engine Type (Vert/Horiz)..Bore/Stroke(mm)..Capacity(ltr)....Power Output(bhp)...Features. AV/AH410.....105/130..................6.7..... ................80-128..... wet liner. AV/AH470.....112/130..................7.7......................90-144..... wet liner. AV/AH471.....112/130..................7.7......................115-135.....dry liner. AV/AH505.....116/130..................8.2......................135-182.....dry liner. AV/AH506.....116/130.... .............8.2......................130-150.....dry liner, high-lift valve. (AV/AH515....116/130..................8.2.....................unknown.....dry liner, high-lift valve, turbocharged .....under development in 1973, but never introduced). AV/AH590.....120/142..................9.6.......................125-159.....wet liner. AV/AH690.....130/142................11.3.......................150-192.....wet liner. AVT/AHT690.130-142...............11.3.......................220-250.....wet liner, turbo-charged. AV/AH691.....130/142................11.3.......................180-206.....dry liner. AV/AH760.....136/142................12.4.......................160-265.....dry liner. L12...............136/142................12.4........................210-230.....dry liner, high-lift valve. TL12 (AV770).136/142..............12.4........................265-280.....dry liner, high-lift valve, cooled-pistons, turbo-charged. V8-800 (AV8-740)..130/114.........12.1.......................225-247.....dry liner. V8-801............135/114................13.1.......................240-275.....dry liner. (V8-810...........135/114................13.1..................... 352............dry liner, high-lift valve, turbo-charged .....under development in 1973, but never introduced). AV/AH1100.....156/156...............17.9.......................175-300.....wet liner. AVT/AHT1100..156/156.............17.9.......................300-400.....wet liner, turbo-charged. Approximate dates of introduction of engines: A410 & A470, 1953 AV471 and A505, 1964 A506, 1976. A590 & A690, 1958 A691 & A760, 1965 L12 & TL12, 1973. V8-800 (A740), 1968 V8-801, 1970? AEC Engines available in AEC road chassis in the late 1970's were: A505 until 1977; A506, A760, L12 and TL12 until 1979, although TL12 continued to be fitted to the Leyland Roadtrain until 1983. Eric A. Hayles (M/No. 1370) 19 May 2001. Last update 25/5/01. |
| Gardner Diesel Engines General information Engine data: 6LX & 6HLX LXB, 6LXC, 6HLXB 8LXB & 8LXC Bore 4¾in (120.65mm) Stroke 6in (152.40mm) Swept Volume 638in³ (10.45l) 851 (13.93l) Firing order 1,5,3,6,2,4 1,5,2,6,8,4,7,3 Engine rating tables For passenger & freight road vehicles, rail locomotives, shunters & railcars, etc. Engine type BHP kW RPM . 6LXB 180 (188) 134.23 (140.19) 1850 6HLXB 180 (188) 8LXB 240 (250) 6LXC 1920 8LXC Other models used in buses were the 5LW and 6LW |
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| The original factory of Norris, Henty & Gardners Ltd, Patricroft, Manchester. |
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