The Kinner K-5 crankcase is manufactures from heat treated aluminium alloy castings, consisting of three pieces, the main cylinder sections and front and rear covers. The removal of the covers makes immediately accessable the crankshaft, bearings, master and link rods, cam gears, followers and magneto drice gears.
The crankshaft is of a special heat treated chrome nickel steel drop-forging, machined all over, counter balanced and supported on two main bearings of special bronze backed babbit. The thrust bearing is a Hoffman ball bearing. Special force feed lubrication is to the link pins.
A special air heater is provided permitting air to be drawn from top or side of the fuselage. A special annualar intake passage is cast in the main crankcase distributes the combustable mixture.
Valve rocker arms are enclosed in a streamlined cover. Inlet and exhaust valves are both necked type of special heat resisting steel alloy. There are individual camshafts for each cylinder.
Accessories available at extra cost were Heywood self starter, Eclipse hand turning gear, and propeller hub.
The Kinner K-5 was a popular engine for light general and sport aircraft developed by Winfield B. 'Bert' Kinner. With the boom in civilian aviation after Charles Lindberg's transatlantic flight the K-5 sold well. The K-5 was a rough running but reliable engine and the K-5 and its derivatives were produced in the thousands, powering many World War II trainer aircraft. The K-5 was followed by the B-5, R-5 and R-55. Circa 1928, the K-5 produced 100 hp at 1810 rpm, with 73 Octane fuel.
Type: Five-cylinder, air-cooled, radial
Approval Type Certificate No.3
Dept of Commerce Rating: 90 hp at 1810 rpm
Commercial Rating: 110 hp at 1880 rpm
Power cruise: 70hp at 1,650 rpm
Displacement: 327 cu.in / 6.1 liters
Compression ratio: 5.0-1
Bore: 4 1/4 in / 108mm
Stroke: 5 1/4 in / 133.3mm
Length: 32 1/4 in
Height: 43.5in (1,104mm)
Diameter: 43 in
Weight: 278 lb
Fuel consumption: not more than .60 lb/hp/hr
Oil consumption: not more than .025 lb/hp/hr
Lubrication: Circulating oil system, pressure feed to front & rear main bearingns, and to plain link pins, through grooved master rod bearings.
Ignition: Dual Scintilla
Carburation: 1 Stromberg NAR-5-A or Holley
Spark plugs: 2 per cylinder B.. No.4 Hornet
Valvetrain: 1 inlet and 1 exhaust valve per cylinder
Fuel type: 73 Octane
Price: $1800 f.o.b. Glendale