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The Nissan K25 engine is a highly reliable, durable, and fuel-efficient power source for industrial use. It is a 2.5-liter inline four-cylinder diesel engine that Nissan produces for industrial and commercial applications.
It can deliver just the right amount of power needed to easily carry out lifting jobs – from hauling heavy loads up into warehouses all day to providing energy for horns, lights, and cooling systems on forklifts used in harsh terrain.
It is typically found in internal combustion forklifts and is used to power the hydraulic systems that control the lift and movement of the forks.
Nissan K25 Engine
Make
Nissan
Engine Model
K25
Litre
2.5L
Engine Displacement CC
2488
Bore
3.5
Oil Capacity w/Filter
4.0L
Compression Ratio
8.7:1 for Gas, 9.3:1 for LPG
Engine Compression
177.8 for Gas 185 for LPG
Engine Cylinders
4
Engine Displacement CID
151.8
Firing Order
1-3-4-2
Stroke
3.94
Spark Plug Type
NI22401-FU412
Spark Plug Gap
0.35
Idle RPM
700
Cylinder Bore Clearance
0.00098-0.0017
Piston Pin Diameter
0.7871-0.7877
Piston Diameter
3.502-3.504
Ring Gap-Top
0.011-0.017
Ring Gap-2nd
0.0177-0.0236
Side Clearance Oil
0.0026-0.0053
Side Clearance Top
0.0017-0.0031
Side Clearance 2nd
0.0012-0.0027
Ring Gap-Oil
0.0078-0.0236
Main Run Clearance
0.0008-0.0029
Main Journal Diameter
2.478
End Play
0.0002
1st Journal Diameter
1.789
2nd Journal Diameter
1.728
3rd Journal Diameter
1.624
Cam End Play
0.00098-0.01004
Intake Head Diameter
1.5
Intake Stem Diameter
0.275
Intake Clearance
0.015 HOT
Exhaust Head Diameter
1.26
Exhaust Stem Diameter
0.274
Exhaust Clearance
The Nissan 89625-K25 engine comes with a 1-year limited warranty.
Nissan Forklift
The Nissan K25 engine is an ideal choice for forklifts, providing reliable performance at lower running costs with its capability to run on regular unleaded gasoline.
The Nissan K25 engine is naturally aspirated, meaning it does not use a turbocharger to compress the incoming air and increase power.
The compression ratio of the Nissan K25 engine is 8.7:1 on Gas and 9.3:1 on LPG.
The oil capacity of the Nissan K25 engine is typically around 4 liters.
Nissans come with a range of engine types that require different oil recommendations. For their K25 engines, they suggest either 5W-30 or 5W-40 oils depending on your forklift model and operating conditions. When you doubt the right oil, it's best to ask our experts, who will provide more exact guidance tailored just for you!
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