Marine Engines - John Deere
6068SFM Power Tech 6.8

john deere 6068SFM
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TIER II Performance Data
  M5 M4 M3 M2 M1
Rated Gross Power—bhp (kW) 300 (224) 267 (199) 236 (176) 208 (155) 182 (136)
Rated Speed—rpm 2600 2500 2400 2300 2200
Low Idle Speed—rpm 650 650 650 650 650
Peak Torque—lb-ft (N • m) 741 (1005) 719 (975) 674 (914) 629 (853) 612 (830)
Peak Torque Speed—rpm 2000 1800 1600 1600 1600
Fuel Consumption—gal/hr (L/h)          
2600 15.61 (59.1) N/A N/A N/A N/A
2500 13.26 (50.2) 13.63 (51.6) N/A N/A N/A
2400 11.6 (43.9) 11.97 (45.3)
12.02(45.5)
 N/A N/A
2300 10.09 (38.2) 10.38 (39.3) 10.57 (40) 10.59 (40.1) N/A
2200 8.69 (32.9) 9.01 (34.1) 9.17 (34.7) 9.22 (34.9) 9.62 (36.4)
2100 7.71 (29.2) 7.9 (29.9) 7.98 (30.2) 7.9 (29.9) 8.3 (31.4)
2000 6.68 (25.3) 6.71 (25.4) 6.89 (26.1) 6.92 (26.2) 7 (26.5)
1800 4.99 (18.9) 5.05 (19.1) 5.12 (19.4) 4.97 (18.8) 5.07 (19.2)
1600 3.54 (13.4) 3.54 (13.4) 3.59 (13.6) 3.57 (13.5) 3.59 (13.6)
1400 2.46 (9.3) 2.48 (9.4) 2.48 (9.4) 2.48 (9.4) 2.48 (9.4)
1200 1.61 (6.1) 1.61 (6.1) 1.64 (6.2) 1.64 (6.2) 1.61 (6.1)
1000 1.03 (3.9) 1.03 (3.9) 1.03 (3.9) 1.03 (3.9) 1.06 (4.0)


PROPULSION & AUXILIARY POWER
General Data
Model 6068SFM50
Number of Cylinders 6
Displacement— (cu. in.) 414 (6.8)
Bore and Stroke—in.(mm) 4.56 X 5.06 (106 x 127)
Aspiration Turbo
Engine Type In-line, 4-Cycle
Compression Ratio 17.0:1
Aftercooling System Seawater
Length—in. (mm) 46.6 (1183)
Width—in. (mm) 28.4 (721)
Height—in. (mm) 24.4 (619)
Weight, dry—lb. (kg) 1402 (636)
Maximum Installed Angle
Front Up—degrees 15°
Front Down—degrees 0°

 
FEATURES & BENEFITS
 
Watercooled Turbocharger and Exhaust Manifold
Heat Exchanger
Cooler and quieter environment for vessel and crew High-capacity heat exchanger designed for reliable operation in adverse conditions
Reduced external connections eliminates hoses and fittings that can leak or break Integrated expansion tank, heat exchanger and exhaust manifold reduce chances of leaks
 
Replaceable wet-type cylinder liners
 High Torque and low rated rpm
Excellent heat dissipation Enables the engine to turn larger propellers at lower speed for best efficiency
Hardened and precision machined for long life Excellent vessel control and maneuvering
Rebuild to original specifications Lower rated rpm limits vibration and noise for better crew comfort
 
Corrosion Resistant Components
 Fuel System
Provides engine protection from the effects of seawater Electronically controlled rotary fuel injection pump with variable timing resulting in excellent fuel economy and excellent performance
  Either-side Service Self-diagnostics and protection
Oil fill and dipstick combinations
Electronic instrument panel with plain text messaging
Remote oil filter for easier service access Emissions
Application and service flexibility to provide installation convenience plus fast and easy maintenance US EPA Marine Tier II Compliant
Has an internal air to water after-cooler which is available at 236Hp @ 2400RPM,  267Hp @ 2500RPM and 300Hp @2600RPM. IMO Compliant

 
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Lilliston & Associates
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