Cummins 6C, 6CT, 6CTA, 8.3 liter engine specs at Barrington Diesel Club

Barrington Diesel club provides Cummins engine specs and technical Data

Cummins 6C, 6CT, 6CTA, 8.3 liter engine specs are to be found at Barrington Diesel Club, whose aim it is to provide technical data, specs and bolt torques relevant to Cummins, Detroit Diesel, EMD and ADE engines.
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 6CT Cummins diesel engines and technical data provided courtesy of Barrington Diesel Club

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Cummins 6CTA Engine Specs, at sea level.

Description	Continuous Power Rating (CPL 2833)
RPM	800	1000	1200	1400	1600	1800
Horse Power SAE	76	136	201	230	248	255
Power Kw	57	101	150	172	185	190

Torque Ft lbs	499	713	880	863	813	745
Torque Nm	677	967	1193	1170	1102	1010

Fuel consumption Marine - Propeller output
Prop - liters per hour	5.6	9.8	15.9	23.7	34.4	50.9
Prop Curve - US gallons per hour	1.5	2.6	4.2	6.3	9.1	13.4
RATED Full load - fuel consumption Crankshaft output
RATED - Fuel Consumption liters per hour	17.0	31.0	36.0	41.0	45.0	50.9
RATED - Fuel Consumption US gallons per hour	4.5	8.2	9.5	10.8	11.9	13.4

Cummins 6CTA Engine Specs, at sea level.

Description

Continuous Power Rating (CPL 2833)

RPM

800

1000

1200

1400

1600

1800

Horse Power SAE

136

201

230

248

255

Power Kw

101

150

172

185

190

Torque Ft lbs

499

713

880

863

813

745

Torque Nm

677

967

1193

1170

1102

1010

Fuel consumption Marine - Propeller output

Prop - liters per hour

5.6

9.8

15.9

23.7

34.4

50.9

Prop Curve - US gallons per hour

1.5

2.6

4.2

6.3

9.1

13.4

RATED Full load - fuel consumption Crankshaft output

RATED - Fuel Consumption liters per hour

17.0

31.0

36.0

41.0

45.0

50.9

RATED - Fuel Consumption US gallons per hour

4.5

8.2

9.5

10.8

11.9

13.4

6CTA Physical Characteristics
Weight - Engine only	1570 lbs	712 kg
Weight - Engine with heat exchanger	1690 lbs	767 kg
Length	45"	1140 mm
Width	33"	849 mm
Height	37"	954 mm
Compression Ratio	16.8:1
Displacement	504 cu Inches	8.3 liter
Bore	4.49 inches	114 mm
Stroke	5.32 inches	135.00 mm

6CTA Physical Characteristics

Weight - Engine only

1570 lbs

712 kg

Weight - Engine with heat exchanger

1690 lbs

767 kg

Length

45"

1140 mm

Width

33"

849 mm

Height

37"

954 mm

Compression Ratio

16.8:1

Displacement

504 cu Inches

8.3 liter

Bore

4.49 inches

114 mm

Stroke

5.32 inches

135.00 mm

Cummins 6CT, 6CTA Valve Settings
Set	Inches	mm
Valves Inlet (cold)	0.012	0.30
Valves Exhaust (cold)	0.024	0.61

Cummins 6CT, 6CTA Valve Settings

Set

Inches

Valves Inlet (cold)

0.012

0.30

Valves Exhaust (cold)

0.024

0.61

Selected Torque specifications Cummins 6CT, 6CTA Engine
Torques (Non standard)	Bolt Size	Ft Lbs	Nm
* Mains Step 1	M14-2.00 x 128mm	37	50
* Mains Step 2	M14-2.00 x 128mm	70	95
* Mains Step 3	M14-2.00 x 128mm	Plus 60°	Plus 60°
* Con Rod bolts, Step 1	.	30	40
* Con Rod bolts, Step 2	.	52	70
* Con Rod bolts, Step 3	.	Plus 60°	Plus 60°
* Cylinder Head (Short Bolts) Step 1	M14-2.00 x 70mm	27	40
* Cylinder Head (Short Bolts) Step 2	M14-2.00 x 70mm	52	70
* Cylinder Head (Short Bolts) Step 3	M14-2.00 x 70mm	Plus 90°	Plus 90°
* Cylinder Head (Long Bolts) Step 1	M14-2.00 x 150mm	27	40
* Cylinder Head (Long Bolts) Step 2	M14-2.00 x 150mm	104	142
* Cylinder Head (Long Bolts) Step 3	M14-2.00 x 150mm	Plus 90°	Plus 90°
Torques (Non standard)	Bolt Size	Ft Lbs	Nm
*	Lubricate with 'International Compound No 2, or Copper-Slip' or equivalent.

Selected Torque specifications Cummins 6CT, 6CTA Engine

Torques (Non standard)

Bolt Size

Ft Lbs

* Mains Step 1

M14-2.00 x 128mm

* Mains Step 2

M14-2.00 x 128mm

* Mains Step 3

M14-2.00 x 128mm

Plus 60°

* Con Rod bolts, Step 1

* Con Rod bolts, Step 2

* Con Rod bolts, Step 3

Plus 60°

* Cylinder Head (Short Bolts) Step 1

M14-2.00 x 70mm

* Cylinder Head (Short Bolts) Step 2

M14-2.00 x 70mm

* Cylinder Head (Short Bolts) Step 3

M14-2.00 x 70mm

Plus 90°

* Cylinder Head (Long Bolts) Step 1

M14-2.00 x 150mm

* Cylinder Head (Long Bolts) Step 2

M14-2.00 x 150mm

104

142

* Cylinder Head (Long Bolts) Step 3

M14-2.00 x 150mm

Plus 90°

Torques (Non standard)

Bolt Size

Ft Lbs

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

Selected Sizes Cummins 6CT, 6CTA Engine
Data for Serial Number 4487830 and Up
Component	Item	Min inches	Max inches	Limits inches	Min mm	Max mm	Limits mm
Block	Main Bearing Bore	4.1333	4.1344	.	104.987	105.013	.
Block	Camshaft Bore	2.5192	2.5202	.	63.987	64.013	.
Block	Cylinder Sleeve Bore	5.1535	5.1555	.	130.900	130.950	.
Block	Cylinder Sleeve Counterbore	5.1550	5.1558	.	130.938	130.958	.

Cylinder Sleeve	OD of Sleeve at top of piston	5.1554	5.1555	.	130.947	130.949	.
Cylinder Sleeve	ID of Sleeve	4.4882	4.4898	4.6109	114.000	114.040	117.117
Cylinder Sleeve	Protrusion above block	0.0005	0.0043	.	0.013	0.109	.

Piston Ring Gap	No1 Compression	0.016	0.028	.	0.40	0.70	.
Piston Ring Gap	No2 Compression	0.016	0.028	.	0.40	0.70	.
Piston Ring Gap	No3 Oil Control (two piece)	0.012	0.024	.	0.30	0.60	.
Component	Item	Min inches	Max inches	Limits inches	Min mm	Max mm	Limits mm
Cylinder Head	Thickness	4.5571	.	.	115.75	.	.
Cylinder Head	Material Removal	.	0.0394	.	.	1.00	.

Con Rod	Small end Bush ID (reamed)	1.7726	1.7730	.	45.023	45.035	.
Con Rod	Big End ID	3.1885	3.1895	.	80.987	81.013	.

Crankshaft	End Float (Clearance)	0.006	0.013	0.015	0.157	0.334	0.381
Crankshaft	Con Rod Journal OD Std	2.9916	2.9926	2.9906	75.987	76.013	75.962
Crankshaft	Main Bearing Journal OD Std	3.8578	3.8588	3.8568	97.987	98.013	97.962
Component	Item	Min inches	Max inches	Limits inches	Min mm	Max mm	Limits mm

Selected Sizes Cummins 6CT, 6CTA Engine

Data for Serial Number 4487830 and Up

Component

Item

Min inches

Max inches

Limits inches

Min mm

Max mm

Limits mm

Block

Main Bearing Bore

4.1333

4.1344

104.987

105.013

Block

Camshaft Bore

2.5192

2.5202

63.987

64.013

Block

Cylinder Sleeve Bore

5.1535

5.1555

130.900

130.950

Block

Cylinder Sleeve Counterbore

5.1550

5.1558

130.938

130.958

Cylinder Sleeve

OD of Sleeve at top of piston

5.1554

5.1555

130.947

130.949

Cylinder Sleeve

ID of Sleeve

4.4882

4.4898

4.6109

114.000

114.040

117.117

Cylinder Sleeve

Protrusion above block

0.0005

0.0043

0.013

0.109

Piston Ring Gap

No1 Compression

0.016

0.028

0.40

0.70

Piston Ring Gap

No2 Compression

0.016

0.028

0.40

0.70

Piston Ring Gap

No3 Oil Control (two piece)

0.012

0.024

0.30

0.60

Component

Item

Min inches

Max inches

Limits inches

Min mm

Max mm

Limits mm

Cylinder Head

Thickness

4.5571

115.75

Cylinder Head

Material Removal

0.0394

1.00

Con Rod

Small end Bush ID (reamed)

1.7726

1.7730

45.023

45.035

Con Rod

Big End ID

3.1885

3.1895

80.987

81.013

Crankshaft

End Float (Clearance)

0.006

0.013

0.015

0.157

0.334

0.381

Crankshaft

Con Rod Journal OD Std

2.9916

2.9926

2.9906

75.987

76.013

75.962

Crankshaft

Main Bearing Journal OD Std

3.8578

3.8588

3.8568

97.987

98.013

97.962

Component

Item

Min inches

Max inches

Limits inches

Min mm

Max mm

Limits mm