Detroit Diesel 16V-71 engine specs at Barrington Diesel Club

Barrington Diesel Club

Detroit Diesel 16V-71 engine specs are provided at Barrington Diesel Club. At Barrington diesel club bolt tightening torques and fuel consumption rates are provided for many engines beginning with Detroit Diesel,Cummins, and ADE. Our Web Log provides a forum for discussing diesel engine features and problems. We also provide general technical data such as Standard Torques for bolts and nuts, Properties of materials like the melting and boiling points of metals, metric to imperial cross references, SAE Flywheel housing sizes, as well as providing articles of general interest like discussions on fuel consumption and Detroit Diesel Air Box Pressures.

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Specs for Detroit Diesel 16V-71 engines and technical data provided courtesy of Barrington Diesel Club

Data provided based on Detroit Diesel printed literature

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Detroit Diesel 16v-71 Power at sea level (Industrial Engines)
description	16V-71N - N65 Injectors	description	16V-71T - N70 Injectors
rpm	1200	1400	1600	1800	2000	2100	rpm	1200	1400	1600	1800	2000	2100
Horse Power SAE	390	460	516	550	600	636	Horse Power SAE	440	516	580	650	680	724
Power Kw	291	343	385	410	447	474	Power Kw	328	385	433	485	507	540
.	.	.	.	.	.	.	.	.	.	.	.	.	.
Torque Ft lbs	1707	1726	1694	1605	1576	1591	Torque Ft lbs	1926	1936	1904	1897	1786	1811
Torque Nm	2315	2340	2297	2176	2137	2157	Torque Nm	2611	2635	2582	2572	2421	2455
.	.	.	.	.	.	.	.	.	.	.	.	.	.
Fuel Consumption l/hour	91.4	103.0	115.5	120.2	127.9	135.6	Fuel Consumption l/hour	97.3	110.0	120.5	133.4	137.7	148.5
.	.	.	.	.	.	.	.	.	.	.	.	.	.
Max Toque Ft lbs	1726 @ 1400 rpm	Max Toque Ft lbs	1936 @ 1400 rpm
Max Torque Nm	2340 @ 1400 rpm	Max Torque Nm	2625 @ 1400 rpm

Detroit Diesel 16v-71 Power at sea level (Industrial Engines)

description

16V-71N - N65 Injectors

description

16V-71T - N70 Injectors

rpm

1200

1400

1600

1800

2000

2100

rpm

1200

1400

1600

1800

2000

2100

Horse Power SAE

390

460

516

550

600

636

Horse Power SAE

440

516

580

650

680

724

Power Kw

291

343

385

410

447

474

Power Kw

328

385

433

485

507

540

Torque Ft lbs

1707

1726

1694

1605

1576

1591

Torque Ft lbs

1926

1936

1904

1897

1786

1811

Torque Nm

2315

2340

2297

2176

2137

2157

Torque Nm

2611

2635

2582

2572

2421

2455

Fuel Consumption l/hour

91.4

103.0

115.5

120.2

127.9

135.6

Fuel Consumption l/hour

97.3

110.0

120.5

133.4

137.7

148.5

Max Toque Ft lbs

1726 @ 1400 rpm

Max Toque Ft lbs

1936 @ 1400 rpm

Max Torque Nm

2340 @ 1400 rpm

Max Torque Nm

2625 @ 1400 rpm

Physical Characteristics Detroit Diesel 16V-71N
Weight	4600 lbs	2087 kgs
Length	79"	2007 mm
Width	45"	1143 mm
Height	58"	1473 mm
Compression Ratio	18.7:1
Displacement	1,136 Cu Inches	18,616 ml
Bore	4.250 inches	107.95 mm
Stroke	5.00 inches	127.00 mm

Physical Characteristics Detroit Diesel 16V-71N

Weight

4600 lbs

2087 kgs

Length

79"

2007 mm

Width

45"

1143 mm

Height

58"

1473 mm

Compression Ratio

18.7:1

Displacement

1,136 Cu Inches

18,616 ml

Bore

4.250 inches

107.95 mm

Stroke

5.00 inches

127.00 mm

Torque specifications Detroit Diesel 16V-71N Engine
Torques (Non standard)	Bolt Size	Ft Lbs	Nm
Air box cover	3/8 NC	15	20
Con Rod bolts / Big Ends	7/16 NF	67	90
Cam and Balance-shaft nuts	1 1/8 NF	300	407
Cam follower guide bolts	¼NC	15	20
* Crank end bolt	1" NF	290	393
* Cylinder head	5/8 NC	184	250
Flywheel Housing Bolts	1/2 NC	95	130
Fuel Connectors	7/16 NF	35	45
Fuel Line Nuts	3/8 NF	15	20
Idler gear hub bolts	3/8 NC	40	54
Injector clamp bolts	3/8 NC	25	34
* Mains	5/8 NC	184	250
Rocker shaft bolts	1/2 NC	96	130
Sump bolts	5/16 NC	10	14
* Flywheel bolts	9/16 NF	184	250
.	.	.	.
*	Lubricate with 'International Compound No 2, or Copper-Slip' or equivalent.

Torque specifications Detroit Diesel 16V-71N Engine

Torques (Non standard)

Bolt Size

Ft Lbs

Air box cover

3/8 NC

Con Rod bolts / Big Ends

7/16 NF

Cam and Balance-shaft nuts

1 1/8 NF

300

407

Cam follower guide bolts

¼NC

* Crank end bolt

1" NF

290

393

* Cylinder head

5/8 NC

184

250

Flywheel Housing Bolts

1/2 NC

130

Fuel Connectors

7/16 NF

Fuel Line Nuts

3/8 NF

Idler gear hub bolts

3/8 NC

Injector clamp bolts

3/8 NC

* Mains

5/8 NC

184

250

Rocker shaft bolts

1/2 NC

130

Sump bolts

5/16 NC

* Flywheel bolts

9/16 NF

184

250

Lubricate with 'International Compound No 2, or Copper-Slip' or equivalent.

71 Series Pistons

On Cross-Head pistons - Torquing con rod to piston/gudgeon pin

Caution - Failure of piston pin retainer bolts is always catastrophic, often a hole in the block - it happened on two occasions to me while dyna-testing engines
Suggestion - Apply locktite (or equivalent thread lock compound) to the 7/16 NF bolts
torque to 60 lb-ft, 80 Nm; do not exceed torque

Installing piston/gudgeon pin retainer plates

Caution - Leaking retainer plates are only remedied by extensive rework, i.e. head and sump at least must be removed again.
Suggestion - Apply shellac (or equivalent compound) to rim of retainer plates
Rap retainer plate into place with a domed/rounded object of similar size to the plate. (small machined nylon rod is ideal)
Allow shellac to dry (overnight)
Test piston plate seal by pouring power-paraffin or diesel into the inverted piston, the outside of the plate must remain completely dry, let it stand for a few minutes before using it to make sure.

Common Settings Detroit Diesel 16V-71N
Set	Inches	mm
Injectors (N60)	1.460	37.10
Injectors (N65 brown tag)	1.484	37.69
Valves (4v head -cold)	0.016	0.41
Valves (2v head -cold)	0.012	0.30

Common Settings Detroit Diesel 16V-71N

Set

Inches

Injectors (N60)

1.460

37.10

Injectors (N65 brown tag)

1.484

37.69

Valves (4v head -cold)

0.016

0.41

Valves (2v head -cold)

0.012

0.30

Standard Sizes and useful clearances Detroit Diesel 16V-71N
Part	Min inches	Max inches	Limits ins	Min mm	Max mm	Limits mm
Con Rod - ID Small End Bush	1.5025	1.5030	1.5080	38.1635	38.1762	38.3032
Con Rod - Length centre to centre	10.1240	10.1260	.	257.1496	257.2004	.
Crankshaft end float	0.0040	0.0160	.	0.10	0.41	.
Crankshaft Big end Std Diameter	2.9990	3.0000	.	76.1746	76.2000	.
Crankshaft Mains Std Diameter	4.4990	4.5000	.	114.2746	114.3000	.
Cyl liner - flange below block	0.0450	0.0500	0.0500	1.1430	1.2700	.
Cyl Liner - flange below block variation	0.0000	0.0020	.	0.00	0.05	.
Cyl Liner - ID	4.2495	4.2511	.	107.9373	107.9779	.
Cyl Liner - OD Std	4.6250	4.6260	.	117.4750	117.5004	.
Piston skirt diameter	4.2428	4.2450	.	107.7671	107.8230	.
Ring gap - compression rings	0.0180	0.0430	0.0600	0.4572	1.0922	1.5200
Ring gap - oil rings	0.0050	0.0140	0.0340	0.1270	0.3556	0.8636

Standard Sizes and useful clearances Detroit Diesel 16V-71N

Part

Min inches

Max inches

Limits ins

Min mm

Max mm

Limits mm

Con Rod - ID Small End Bush

1.5025

1.5030

1.5080

38.1635

38.1762

38.3032

Con Rod - Length centre to centre

10.1240

10.1260

257.1496

257.2004

Crankshaft end float

0.0040

0.0160

0.10

0.41

Crankshaft Big end Std Diameter

2.9990

3.0000

76.1746

76.2000

Crankshaft Mains Std Diameter

4.4990

4.5000

114.2746

114.3000

Cyl liner - flange below block

0.0450

0.0500

1.1430

1.2700

Cyl Liner - flange below block variation

0.0000

0.0020

0.00

0.05

Cyl Liner - ID

4.2495

4.2511

107.9373

107.9779

Cyl Liner - OD Std

4.6250

4.6260

117.4750

117.5004

Piston skirt diameter

4.2428

4.2450

107.7671

107.8230

Ring gap - compression rings

0.0180

0.0430

0.0600

0.4572

1.0922

1.5200

Ring gap - oil rings

0.0050

0.0140

0.0340

0.1270

0.3556

0.8636

Tune up & useful information 16V-71N Detroit Diesel engines
Item	Condition
Altitude deration	2.5% for every 300 m or 1000 ft
Cooling System - capacity	55.0 litres
Firing Order RH Rotation Engine	1L-2R-8L-6R-2L-4R-6L-5R-4L-3R-5L-7R-3L-1R-7L-8R
Oil consumption	normal 150 to 450 ml per hour
Oil pan capacity	average 82 litres, full mark 50 mm below sump top
Speed full load max	Most common at 2100 rpm
Speed no load max	Most common at 2275 rpm
Speed at idle	commonly at 680 rpm

Tune up & useful information 16V-71N Detroit Diesel engines

Item

Condition

Altitude deration

2.5% for every 300 m or 1000 ft

Cooling System - capacity

55.0 litres

Firing Order RH Rotation Engine

1L-2R-8L-6R-2L-4R-6L-5R-4L-3R-5L-7R-3L-1R-7L-8R

Oil consumption

normal 150 to 450 ml per hour

Oil pan capacity

average 82 litres, full mark 50 mm below sump top

Speed full load max

Most common at 2100 rpm

Speed no load max

Most common at 2275 rpm

Speed at idle

commonly at 680 rpm

Operating Conditions 16V-71N series engines
Item	Condition
Compression (sea level)	New parts - average 39 bar
Compression (sea level)	New parts - min 35 bar @ 600 rpm
Fuel Pressure @ 1500 rpm	3 bar
Oil Pressure - normal operation	3.5 bar
Oil Pressure - idle	0.8 bar
Oil Temperature - sump	90-113°C
Water Temperature	77-91°C

Operating Conditions 16V-71N series engines

Item

Condition

Compression (sea level)

New parts - average 39 bar

Compression (sea level)

New parts - min 35 bar @ 600 rpm

Fuel Pressure @ 1500 rpm

3 bar

Oil Pressure - normal operation

3.5 bar

Oil Pressure - idle

0.8 bar

Oil Temperature - sump

90-113°C

Water Temperature

77-91°C