Doosan GC25P-3 User Manual

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Engine Mechanical Specifications (1 of 2)
Application Metric English
General Data
Engine Type L4
Displacement 3.0L 181 CID
Bore 101.60 mm 4,000 in
Stroke 91.44 mm 3.60 in
Compression Ratio 9.25:1
Firing Order 1-3-4-2
Spark Plug Gap 0.9 mm 0.035 in
Lubrication System
Oil Pressure (Minimum-Hot) 41.4 kPa at 6.0 psig at
1,000 engine rpm 1,000 engine rpm
124.1 kPa at 18.0 psig at
2,000 engine rpm 2,000 engine rpm
165.5 kPa at 24.0 psig at
4,000 engine rpm 4,000 engine rpm
Oil Capacity 3.81 4.00 qts
Oil Pump Type Gear Driven
Cylinder Block
Bore Diameter 101.5873-101.6635 mm 3.9995-4.0025 in
Bore Out-of-Round Production 0.0254 mm (Maximum) 0.001 in (Maximum)
Bore Out-of-Round Service Limit 0.0508 mm (Maximum) 0.002 in (Maximum)
Bore Taper Thrust Side Production 0.0127 mm (Maximum) 0.0005 in (Maximum)
Bore Taper Thrust Side Service Limit 0.0254 mm (Maximum) 0.001 in (Maximum)
Bore Taper Relief Side Production 0.0127 mm (Maximum) 0.0005 in (Maximum)
Bore Taper Relief Side Service Limit 0.0254 mm (Maximum) 0.001 in (Maximum)
Runout-Rear Face of Block to Crankshaft Center Line 0.05 mm (Maximum) 0.002 in (Maximum)
Piston
Piston-To-Bore Clearance Production 0.0635-0.0889 mm 0.0025-0.0035 in
Piston-to-Bore Clearance Service Limit 0.0889 mm 0.0035 in (Maximum)
Piston Rings
Piston Compression Ring Groove Clearance Production Top 0.03048-0.07366 mm 0.0012-0.0029 in
Piston Compression Ring Groove Clearance Production 2nd 0.03048-0.07366 mm 0.0012-0.0029 in
Piston Compression Ring Groove Clearance Service Limit 0.09906 mm (Maximum) 0.0039 in (Maximum)
Piston Compression Ring Gap Top Production* 0.254-0.508 mm 0.01-0.02 in
Piston Compression Ring Gap 2nd Production* 0.4318-0.635 mm 0.017-0.025 in
Piston Compression Ring Gap Top Service Limit* 0.88 mm (Maximum) 0.035 in (Maximum)
Piston Compression Ring Gap 2nd Service Limit* 0.88 mm (Maximum) 0.035 in (Maximum)
Piston Oil Ring Groove Clearance Production 0.0254-0.1524 mm 0.001-0.006 in
Piston Oil Ring Groove Clearance Service Limit 0.1778 mm (Maximum) 0.007 in (Maximum)
Piston Oil Ring Gap Production* 0.25-0.76 mm 0.01-0.03 in
Piston Oil Ring Gap Service Limit* 1.016 mm (Maximum) 0.04 in (Maximum)
Piston Pin
Diameter 23.545-23.548 mm 0.9270-0.927 in
Clearance in Piston Production 0.00762-0.01651 mm 0.0003-0.00065 in
Clearance in Piston Service Limit 0.0254 mm (Maximum) 0.001 in (Maximum)
Fit in Connecting Rod 0.02032-0.050292 mm 0.0008-0.00198 in
(Interference) (Interference)
*Measured in cylinder bore
LP Engine G430(3.0L) Specifications

Doosan GC25P-3 Specifications

General

Brand	Doosan
Model	GC25P-3
Category	Engine
Language	English