Aeromarine B-45
# Aeromarine B-45

The Aeromarine B-45 is an aircraft engine built by the Aeromarine Plane and Motor Company in 1915. The B-45 shares the same bore, stroke and valve configuration as the B-90, except in a 45° Vee configuration. The other primary difference are cast aluminum cylinders in place of the B-90's cast iron resulting in a 40 lb (18 kg) weight savings.

## Specifications

Data from Airplane Engine Encyclopedia

### General characteristics

* Type: 8-cylinder 45° Vee piston engine
* Bore: 3.625 in (92.08 mm)
* Stroke: 5.125 in (130.18 mm)
* Displacement: 423.2 cu in (6.94 L)
* Length: 42.875 in (1,089.02 mm)
* Width: 22.375 in (568.32 mm)
* Height: 36.875 in (936.62 mm)
* Dry weight: 420 lb (190 kg)
* Designer: Joseph Boland

### Components

* Valvetrain: 2 intake and 2 exhaust valves per cylinder, DOHC
* Fuel system: Single 1.75 in. duplex Zenith carburetor
* Fuel type: gasoline
* Cooling system: Water
* Reduction gear: .571:1
* Ignition: 2 Dixie 800 magnetos

### Performance

* Power output: 170 hp (130 kW) nominal at 2,635 rpm
* Compression ratio: 5 to 1
* Power-to-weight ratio: 0.40 hp/lb (0.66 kW/kg)
