Detroit Diesel 4-53 Manuals, Bolt Torques, Specs

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Detroit Diesel 4-53
Main Bearing Bolts
(9/16 NC)
Step 1 = 60 lb.ft, 80 Nm
Step 2 = 130 lb.ft, 177 Nm

Detroit Diesel 4-53
Connecting Rod Bolts
Earlier type had 5/16 in Bolts
24 to 28 lb.ft, 33 to 38 Nm

Later type has 3/8 in Bolts
40 to 45 lb.ft, 54 to 61 Nm

Detroit Diesel 4-53
Cylinder Head Bolts
(5/8 NC)
Step 1 = 60 lb.ft, 80 Nm
Step 2 = 110 lb.ft, 150 Nm
Step 3 = 180 lb.ft, 240 Nm

Detroit Diesel
4-53 Arrangement,
Displacement, Bore, Stroke
and Compression Ratio

Arrangement
4 Cyl In-Line, Natural Aspiration

4-53T
4 Cyl In-Line, Turbocharged

Displacement
4-53N and 4-53T - 3.5 liter, 212 CID

Bore
3.875 in, 98.425 mm

Stroke
4.50 in, 114.30 mm

Compression Ratio
4-53 21:1
4-53T 18.7:1

Detroit Diesel 4-53
Power and Torque

Power
4-53N
140 hp, 104 kW @ 2800 rpm

4-53T
175 hp, 131 kW @ 2500 rpm

Torque
4-53
282 lb.ft, 382 Nm @ 1560 rpm

4-53T
420 lb.ft, 569 Nm @ 1800 rpm

Detroit Diesel 4-53
Dimensions and Weight

Dimensions approx
4-53N
Length 991 mm, 39 in
Width 686 mm, 27 in
Height 940 mm, 37 in

4-53T
Length 991 mm, 39 in
Width 762 mm, 30 in
Height 991 mm, 39 in

Weight approx
4-53N 503 kKg, 1110 lb

4-53T 572 Kg, 1260 lb