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Detroit Diesel 4-71 Essential Diesel Engine Bolt Tightening Torques

 

Detroit Diesel 4-71 Main Bearing Bolts
step 1 = 100 lb.ft, 135 Nm
step 2 = 184 lb.ft, 250 Nm

Detroit Diesel 4-71 Cylinder Head Bolts
step 1 = 100 lb.ft, 135 Nm
step 2 = 184 lb.ft, 250 Nm


Detroit Diesel 4-71 Diesel Engine Specs

 

Detroit Diesel 4-71 Arrangement, displacement, bore, stroke and compression ratio

Arrangement
4-71N
4 Cyl In-Line, Naturally Aspirated

4-71T
4 Cyl In-Line, turbocharged

Displacement
4-71 - 4.7 liter, 284 CID

Bore
4.25 in, 180.0 mm

Stroke
5.0 in, 127.0 mm

Compression ratio
4-71N 18.7:1
4-71T 17.0:1

Detroit Diesel 4-71 Power and torque

Power
4-71N
160 hp, 119 kW @ 2100 rpm

4-71T
211 hp, 157 kW @ 2300 rpm

Torque
4-71N
407 lb.ft, 552 Nm @ 1600 rpm

4-71T
533 lb.ft, 723 Nm @ 1400 rpm

Detroit Diesel 4-71 Dimensions and weight

Dimensions approx
4-71N
length 1067 mm, 42 in
width 737 mm, 29 in
height 1067 mm, 42 in

4-71T
length 1128 mm, 44 in
width 790 mm, 31 in
height 1120 mm, 44 in

Weight approx
4-71N 807 kg, 1780 lb
4-71N 830 kg, 1830 lb


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