Michigan Aero-Engine Rover
The Rover features ribbed, die-cast aluminium alloy cylinder heads, cast nickel iron cylinders, and an integral five bearing crankshaft. Connecting rods are dropped forged Dural.
An inverted type, valve gear ports are completely enclosed. The lubrication system is designed completely within the engine. With a dry sump, all oil is carried in an external tank. There is an independent scavenger system for each end of the crankcase.
All accessories are arranged at the rear. Standard equipment was a main cooling air scoop, complete exhaust system, carburettor air heater with control, propeller hub, tool kit and instruction book.
Available at extra cost was a hand or electric starter.
Type: 4 cylinder inverted inline air cooled
Commercial Rating: 75 hp at 1970 rpm
Displacement: 267.28 cu.in
Compression ratio: 5.15-1
Bore: 4 1/8 in
Stroke: 5 in
Length: 42 1/4 in
Width: 11 1/8 in
Height: 31 7/8 in
Weight: 232 lb
Fuel consumption: not more than .18 lb/hp/hr
Oil consumption: not more than .055 lb/hp/hr
Lubrication: 3 gear scavenging pump, 2 gear pressure pump
Ignition: 2 Scintilla magnetos
Carburation: 1 Stromberg NA*R3 with altitude adj.
Spark plugs: 2 per cylinder AC