The Crossley 20-70 was manufactured between 1922 and 1926. Total production is estimated at 50 to 100. The chassis numbers were part of the 19.6 series. Known examples are 16430 and 17506. The engine was a tuned version of that fitted to the 19.6 featuring higher compression ratio, polished and balanced crankshaft and lightweight pistons .


Crossley 20/70 four seat tourer Crossley 20/70 Four seat tourer

Four seat sports.
Top - Type B Body, Bottom - Type C body
(The Type A was similar to the Type B but with hood fitted to the car as in the Type C rather than of the detachable type.)
£875 (1923) £900 (1924) £860 (1925)

Crossley 20/70 two seat tourer

Two seat sports
£845 (1923)

Crossley 20/70 saloon

Four seat V windscreen saloon

Crossley 20/70 speedforte

"Speedforte" 2/4 seater
£910 (1924)

Described as a two seater that could be made into a four seater by removing the rear deck. A rear windscreen would fold up. It was displayed at the 1924 Olympia show. (Note - although the car shown fits the description it is not certain that it is a "Speedforte")

The above are all Crossley factory bodies. The car could also be supplied in chassis form to independent coach builders. (chassis £675 in 1923)

The prices quoted are from contemporary advertisements.


capacity 3705cc
cylinders 4 monobloc
bore 3½ inches (89mm)
stroke 5 7⁄8 inches (150mm )
compression ratio 5.2:1
RAC Horse Power 19.6
carburettor Smiths 5 jet
valves side
lubrication pressure with drilled crankshaft
ignition magneto - Lucas type EB4 or GD4
max power 76 bhp at 3200 rpm
fuel consumption (typical) 22 mpg (12.8 l/100km)
max speed (approx) 75 mph (120 km/h)
Gears 4 forward + reverse gears.
ratios - 1:1, 1.56:1, 2.40:1, 3.8:1
Clutch cone
Rear axle spiral bevel
ratio 3.3:1