International Harvester Hydro 86 Engine


International Harvester Hydro 86 tractor photo
1976 - 1980
86 Series
Row-Crop tractor
Series map:
Hydro 86
77.2hp*
*Estimated engine power for comparison only.
Engine options
International Harvester 5.1L 6-cyl diesel
International Harvester 4.8L 6-cyl gasoline
Engine Detail
International Harvester D-312
diesel
6-cylinder
liquid-cooled
Displacement312 ci
5.1 L
Bore/Stroke3.875x4.410 inches
98 x 112 mm
Air cleanerdual dry element with unloader
Compression17:1
Rated RPM2400
Starter volts12
Engine Detail
International Harvester
gasoline
6-cylinder
liquid-cooled
Displacement290.8 ci
4.8 L
Bore/Stroke3.75x4.39 inches
95 x 112 mm
Air cleanerdual stage dry with dust unloader
Compression7.5:1
Rated RPM2400
Starter volts12
Engine Detail
International Harvester D-310
diesel
6-cylinder
liquid-cooled
The D-310 diesel was used on the Hydro 86, replacing the 312, during production in 1979.
Displacement310 ci
5.1 L
Bore/Stroke3.875x4.375 inches
98 x 111 mm
Air cleanerdry
Compression15.1:1
Rated RPM2400
Page information
Peter Easterlund - owner of TractorData.com
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Updated on February 6, 2024
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