Note:The naturally-aspirated 531 was an optional engine on the John Deere 6030 offered during the 1973 model year. The naturally-aspirated engine was dropped due to poor sales.
Type:John Deere 8.7L 6-cyl diesel
Rated RPM:2100
Air cleaner:dual paper elements with aspirator
Bore/Stroke:4.75x5.00 inches (121 x 127 mm)
Displacement:531 ci (8.7 L)
Firing order:1-5-3-6-2-4
Oil capacity:26 qts (24.6 L)
Starter volts:12
Coolant capacity:40 qts (37.9 L)
Compression ratio:15.4:1
Turbocharged engine:turbocharged intercooled diesel, 6-cylinder, liquid-cooled inline
Naturally aspirated engine:diesel, 6-cylinder, liquid-cooled inline
Naturally aspirated rated RPM:2200
Naturally aspirated bore/stroke:4.75x5.00 inches (121 x 127 mm)
Naturally aspirated displacement:531 ci (8.7 L)
Naturally aspirated oil capacity:20 qts (18.9 L)
Naturally aspirated compression ratio:16.5:1