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Detroit Diesel 12v-71 Essential Diesel Engine Bolt Tightening Torques
Detroit Diesel 12V-71
Main Bearing Bolts
Step 1 = 100 lb.ft, 135 Nm
Step 2 = 184 lb.ft, 250 Nm
Detroit Diesel 12V-71
Connecting Rod Bolts
67, lb.ft, 90 Nm
Detroit Diesel 12V-71
Cylinder Head Bolts
Step 1 = 100 lb.ft, 135 Nm
Step 2 = 184 lb.ft, 250 Nm
Detroit Diesel 12v-71 Diesel Engine Specs
Detroit Diesel 12v-71
Arrangement, Displacement, Bore, Stroke and Compression Ratio
12v-71N Arrangement
12v engine,
naturally aspirated
12v-71T Arrangement
12v engine,
turbocharged
Displacement
12v-71 - 14.0 liter, 852 CID
Bore
4.25 in, 108 mm
Stroke
5.0 in, 127 mm
Compression ratio
12v-71N 18.7:1
12v-71T 17.0:1
Detroit Diesel 12v-71
Power and Torque
Power
12v-71N
476 hp, 355 kW @ 2100 rpm
12v-71T
553 hp, 412 kW @ 2100 rpm
12v-71TA
600 hp, 448 kW @ 2100 rpm
Torque
12v-71N
1200 lb.ft, 1627 Nm @ 1600 rpm
12v-71T
1530 lb.ft, 2074 Nm @ 1400 rpm
12v-71TA
1738 lb.ft, 2357 Nm @ 1200 rpm
Detroit Diesel 12v-71
Dimensions and Weight
Dimensions
Approx
12v-71N
length 2362 mm, 93 in
width 1219 mm, 48 in
height 1626 mm, 64 in
12v-71T
length 1778 mm, 70 in
width 1168 mm, 46 in
height 1390 mm, 55 in
Weight
Approx
12v-71N
2132 kg, 4700 lb
12v-71T
1610 kg, 3542 lb