This also necessitated a slight change in the valvetrain, with the two pushrods now placed separately to both sides of the intake duct, instead of both pushrods being placed at one side of the combined intake duct in the older design.

Cast iron cylinders like in the previous engine design were also available, although in updated form to match the redesigned engine parts (i.e. separate intake ducts, new pushrod arrangement and increased number of crankcase mounting bolts).

Small amounts of fresh oil were augmented by the piston pump automatically.

The camshaft was driven from the crankshaft via an intermediate spur gear on the control end, and two additional vertical layshafts, both driven from the crankshaft via bevel gears, were used to drive the magnetos and the water- as well as the oil pump.

The upper layshaft provided the tachometer output and also was used to drive the two magnetos, which were mounted transversely and driven via separate bevel gears.