Aeromarine B-90
# Aeromarine B-90

The Aeromarine B-90 is an aircraft engine built by the Aeromarine Plane and Motor Company in 1915. Aeromarine made two series of V-8 engines. The B series was developed by Joseph Boland and the L series by Charles F. Willard.

## Specifications

Data from Airplane Engine Encyclopedia

### General characteristics

* Type: 8-cylinder 90° 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)
* Dry weight: 460 lb (210 kg)
* Designer: Joseph Boland

### Components

* Valvetrain: 2 intake and 2 exhaust valves per cylinder, single DOHC camshaft operating rockers
* Fuel system: Single 1.75 in. duplex Zenith carburetor
* Fuel type: gasoline
* Oil system: triple gear pump pressure system; HP to crankshaft; LP to camshaft; LP to oil cooler in radiator
* Cooling system: Water
* Reduction gear: .571:1
* Ignition: 2 Dixie magnetos

### Performance

* Power output: maximum 166 hp (124 kW) nominal at 2,635 rpm
* Compression ratio: 5 to 1
* Power-to-weight ratio: 0.3226 hp/lb (0.5304 kW/kg)
