The Hirth HM 508 was an air-cooled, inverted, 60° V8 aircraft engine built in Germany in the 1930s. It had a bore and stroke of 105 mm × 115 mm (4.1 in × 4.5 in) and developed 210 kW (280 hp) at 3,000 rpm.

Variants HM 8U HM 508A HM 508B HM 508C HM 508D at 3000 rpm HM 508E HM 508F HM 508G HM 508H , low fuel consumption variant, with centrifugal supercharger geared at 3.86:1 crankshaft speed for long-range record breaking aircraft.

Applications Ambrosini S.7 Gotha Go 146 Gotha Go 149 Heinkel He 116 IMAM Ro.63 Messerschmitt Bf 108 Siebel Fh 104 Weserflug We 271 Experimental aircraft

Specifications (HM 508D)

See also

References