Detroit Diesel 6-71 Manuals, Bolt Torques, Specs

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Detroit Diesel 6-71
Main Bearing Bolts
Step 1 = 100 lb.ft, 135 Nm
Step 2 = 184 lb.ft, 250 Nm

Detroit Diesel 6-71
Connecting Rod Bolts
67, lb.ft, 90 Nm

Detroit Diesel 6-71
Cylinder Head Bolts
Step 1 = 100 lb.ft, 135 Nm
Step 2 = 184 lb.ft, 250 Nm

Detroit Diesel 6-71
Arrangement, Displacement,
Bore, Stroke and
Compression Ratio

Arrangement
6-71N
6 Cyl In-Line, Naturally Aspirated

6-71T
6 Cyl In-Line, turbocharged

6-71TA
6 Cyl In-Line,
turbocharged, aftercooled

6-71TI
6 Cyl In-Line,
turbocharged, intercooled

Displacement
6-71 - 7.0 liter, 426 CID

Bore
4.25 in, 108 mm

Stroke
5.0 in, 127 mm

Compression Ratio
6-71N 18.7:1
6-71T 17.0:1
6-71TA 17.0:1
6-71TI 17.0:1

Detroit Diesel 6-71
Power and Torque

Power
6-71N
230 hp, 172 kW @ 2100 rpm

6-71T
290 hp, 216 kW @ 2100 rpm

6-71TA
310 hp, 231 kW @ 2500 rpm

6-71TI
485 hp, 362 kW @ 2500 rpm

Torque
6-71N
609 lb.ft, 826 Nm @ 1600 rpm

6-71T
785 lb.ft, 1064 Nm @ 1000 rpm

6-71TA
777 lb.ft, 1053 Nm @ 1400 rpm

Detroit Diesel 6-71
Dimensions and Weight

Dimensions approx
6-71N
Length 1372 mm, 54 in
Width 737 mm, 29 in
Height 991 mm, 39 in

6-71T
Length 1421 mm, 56 in
Width 813 mm, 32 in
Height 1321 mm, 52 in

6-71TA
Length 1421 mm, 56 in
Width 813 mm, 32 in
Height 1321 mm, 52 in

6-71TI Marine
Length 1803 mm, 71 in
Width 813 mm, 32 in
Height 998 mm, 39 in

Weight approx
6-71N 993 kg, 2190 lb
6-71T 996 kg, 2195 lb
6-71TA 1000 kg, 2200 lb
6-71TI Marine 1293 kg, 2850 lb