The six cylinder version (6BD1) was also known as the QD150. Approx 1980 this engine became available as an industrial and marine engine, it also used in Isuzu light trucks known as the K series.
As a marine and industrial engine the 4BD1 and 4BD1T continue to be sold in some countries. Isuzu still offer 4BG1 and 4BG1T industrial and marine engines which while larger displacement are the same engine family and offer power outputs of up to 200hp.
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Engine: |
Isuzu 3.9L4BD1-T(AKA QD100T) |
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Applications: |
1986-1991 ISUZU NPR/Chevrolet W4500 |
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Type: |
4 stroke direct injection diesel |
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Configuration: |
Inline 4 cylinder (I-4/L-4) |
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Displacement: |
3.856 liters, 236.08 CID |
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Firing Order: |
1-3-4-2 |
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Engine Block: |
Cast iron, dry type cylinder liner |
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Cylinder head: |
Cast iron |
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Compression Ratio: |
17.5:1 |
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Cylinder Bore: |
4.02 in (102 mm) |
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Cylinder Stroke: |
4.65 in (118 mm) |
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valvetrain: |
OHV,solid lifter camshaft |
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Injection: |
Mechanical inline injection pump, direct injection |
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Aspiration: |
Turbocharged, IHI 6HB6or Garrett T25 models |
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Engine Dimensions (approx): |
Length: 31.3 in |
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Width: 27.8 in |
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Height: 29.7 in |
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Engine Weight(aporox): |
~770 lbs |
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Peak Horsepower: |
Up to 135 hp @ 3,000 RPM (varies by application,135 hp rating common for Isuzu NPR/Chevrolet W4 applications) |
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Peak Torque: |
Up to 243 Ib-ft @ 1,800 RPM(varies by application) |
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Idle Speed: |
~650 RPM |
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Max Engine Speed: |
-3,500 RPM |
