Daimler Straight-Eight engines

The sleeve-valve engines with silence and great low-speed torque were unable to spin fast enough to make full use of new combustion technology and remain reliable.

[6] In the Daimler Twenty-Five the straight-eight was mounted using their Daimler-patented bi-axial design by which flexible support is given to the engine at five points.

The generator on the offside shares a triple belt drive with the water pump and the radiator cooling fan.

[5] The crankshaft was fully counterbalanced, mounted in nine main bearings, and fitted with a vibration damper.

[3] In September 1935 it was announced that the cylinder bore was now increased to 80 mm increasing the engine's capacity from 3.746 to 4.624 litres following the 25% reduction in horsepower tax which took effect on 1 January 1935. intended to provide improved performance but more important lighter running for the engines and a consequent extension of silent and comfortable service.

[11] During 1935 a 3½-litre Straight-Eight open car achieved a maximum timed speed at Brooklands of slightly in excess of 90 mph.

V26 gear selector and fascia
1934 Twenty-Five Straight-Eight limousine by Hooper
4-litre Thirty 1939 example
for the Lord Mayor of London
5½-litre Thirty-Six 1946 example
5½-litre Thirty-Six 1947 example
State landaulette
5½-litre Thirty-Six 1948 example
allweather in royal livery
5½-litre Thirty-Six 1949 example
Cars bought for George VI 's planned tour of New Zealand 1952
limousine, landaulette and allweather with perspex head
and their three backup cars