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Isuzu 4JA1 Series Engine

Isuzu 4JA1 Series Engine

Store / Engine Spare parts / Isuzu
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Isuzu 4JA1 Series Engine

The J-series direct injection diesel engine was introduced in 1985, in 2.5 or 2.8 liter displacements. Initially installed only in lighter duty versions of the Isuzu Elf, it soon found its way into other Isuzu products. It replaced the somewhat smaller C engine; later on 3.1- and 3.0-liter versions were also introduced - still with four cylinders in line.
  • PRODUCT DETAILS
Engine Model 4JA1
Engine type Water cooled, four-cycle, in-line, overhead valve
Combustion chamber type Direct injection
Cylinder liner type Dry
No. of cylinders - Bore x Stroke mm(in.) 4 - 93.0 x 92.0
(3.66 x 3.62)
Displacement lit(cid) 2.449 (152.4)
Compression ratio 18.4
Engine dimensions L*W*H (mm) 805 x 625 x 729
(31.7 x 24.6 x 28.7)
Engine weight (Dry) kg(lb.) 218 (480)
Fuel injection order 1 – 3– 4 – 2
*Fuel injection timing (B.T.D.C.) 14
degrees
Specified fuel Diesel fuel
Injection pump In-line plunger, Bosch A type
Governor Variable speed mechanical type
Low idle speed rpm 850 – 1000
Injection nozzle Multi-hole type
Lubrication method Pressurized circulation
Oil pump Trochoid type
Main oil filter type Cartridge paper element, full flow
Alternator V/A 12 – 35
Starter V-kW 12-2.2

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Isuzu 4JA1 Series Engine
Store / Engine Spare parts / Isuzu
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