Tractors > Allis Chalmers > D21 Series II

Allis Chalmers D21 Series II Engine



Allis Chalmers D21 Series II tractor photo
1963 - 1969
Model year
D Series
Row-Crop tractor
Series map:
D21
134.4hp*
*Estimated engine power for comparison only.
Engine Detail
Allis Chalmers 3500
turbocharged diesel
6-cylinder
liquid-cooled
Displacement426 ci
7.0 L
Bore/Stroke4.25x5.00 inches
108 x 127 mm
Compression16.0:1
Rated RPM2200
Firing order1-5-3-6-2-4
Oil capacity15 qts
14.2 L
Coolant capacity31 qts
29.3 L
Intake valve clearance0.015 inches
0.381 mm
Exhaust valve clearance0.015 inches
0.381 mm
Page information
Peter Easterlund - owner of TractorData.com
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Updated on August 18, 2025
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