The Churchill engine was a 12-cylinder, 4 stroke, water-cooled, horizontally opposed petrol engine. It developed a nominal 350 B.H.P. at 2,200 r.p.m.

Rear 3/4 view of the engine. On this example the clutch is in place, bolted to the fly wheel which forms one friction plate of the clutch. Clearly visible on the front face are the 24 retainers for the helical springs used to apply the pressure to the driven plate. Also, on the front face of the clutch can be seen the toggle levers (radiating from the centre) which relieve the spring pressure from the driven plate when disengaging the clutch.

The long cylinder to the right of the engine is the oil filter and de-aerator. Mounted on top of the engine the two black cylinders are the distributors in front of which can be seen the governor.

(Above) Front view of the engine. Missing from the top of the engine is the main generator but the curved 'seat' where it would have been attached is clearly visible. The silver 'hoses' that can be seen are the shielded conduits for the inginition wiring - connecting the distributor units on the top to the spark plugs at the side.

(Below) This engine has the grenerator in place (top front left). Note that each cylinder has two spark plugs.

(Above) Front view of the engine. To the top behind the black box is the front pully wheel of the main generator a belt from which would run vertically down to the main drive pully below.
Note the large air filter unit to the left of the engine. These were mounted inside and to the rear of the fighting compartment.

(Below) Unlike the 'restored' engine this one does not have the clutch fitted revealing the fly wheel.