Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSMITSUBISHI1995MONTERO LS, AUTOMATIC, V4AW3REPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE MECHANICALTIMING BELT3.0L V6 ENGINE - VIN [H]GENERAL ENGINE SPECIFICATIONS

1995 Mitsubishi Montero LS, Automatic, V4AW3

General Engine Specifications

1995 Mitsubishi Montero LS, Automatic, V4AW3SECTION General Engine Specifications

GENERAL SPECIFICATIONS

Application			Specification
Displacement			181.4 Cu. In.
Bore			3.587" (91.1 mm)
Stroke			2.992" (76.0 mm)
Compression Ratio
12-Valve			8.9:1
24-Valve			9.0:1
Fuel System			MFI/SFI
Horsepower @ RPM
12-Valve			143 @ 5000
24-Valve
California			168 @ 5000
Federal			177 @ 5000
Torque Ft. Lbs. @ RPM
12-Valve			168 @ 2500
24-Valve
California			183 @ 2500
Federal			188 @ 2500

CRANKSHAFT, MAIN & CONNECTING ROD BEARINGS

Application			In. (mm)
Crankshaft End Play
Standard			.0020-.0098 (.050-.250)
Limit			.012 (.30)
Main Bearings
Journal Diameter			2.36 (59.9)
Journal Out-Of-Round			.0002 (.005)
Journal Taper			.0002 (.005)
Oil Clearance
Standard			.0008-.0020 (.020-.050)
Limit			.004 (.10)
Connecting Rod Bearings
Journal Diameter			1.965 (49.91)
Journal Out-Of-Round			.0002 (.005)
Journal Taper			.0002 (.005)
Oil Clearance
Standard			.0008-.0020 (.020-.050)
Limit			.004 (.10)

CONNECTING RODS

Application		In. (mm)
Maximum Bend		.0020 (.050)
Maximum Twist (Total Rod Length)		.004 (.10)
Side Play
Standard		.0039-.0099 (.099-.251)
Limit		.016 (.41)

PISTONS, PINS & RINGS

Application

In. (mm)

Piston Clearance

.0008-.0016 (.020-.040)

Piston Diameter

3.587 (91.11)

Pins

Piston Fit

⁽¹⁾

Rod Fit

⁽²⁾

Rings

No. 1

End Gap

Standard

.0120-.0170 (.300-.450)

Limit

.031 (.79)

Side Clearance

Standard

.0012-.0027 (.030-.070)

Limit

.004 (.10)

No. 2

End Gap

Standard

.0180-.0230 (.450-.600)

Limit

.031 (.79)

Side Clearance

Standard

.0008-.0024 (.020-.060)

Limit

.004 (.10)

No. 3 (Oil)

End Gap

Standard

.008-.024 (.20-.60)

Limit

.039 (.99)

⁽¹⁾

Slip.

⁽²⁾	At press load of 1653-3858 lbs. (750-1750 kg).

CYLINDER BLOCK

Application		In. (mm)
Cylinder Bore
Standard Diameter		3.590 (91.19)
Maximum Taper & Out-Of-Round		.0008 (.020)
Maximum Deck Warpage
Standard		.001-.002 (.03-.05)
Limit		.004-.007 (1.00-0.20)

VALVES & VALVE SPRINGS

Application			Specification
Intake Valves
Face Angle			45-45.5°
Minimum Margin			.028" (.71 mm)
Stem Diameter
12-Valve			.315" (8.00 mm)
24-Valve			.236" (6.00 mm)
Exhaust Valves
Face Angle			45-45.5°
Minimum Margin			.059" (1.50 mm)
Stem Diameter
12-Valve			.311" (7.90 mm)
24-Valve			.236" (6.00 mm)
Valve Springs - Free Length
Standard
12-Valve			1.960" (49.78 mm)
24-Valve			2.010" (51.00 mm)
Limit
12-Valve			1.920" (48.77 mm)
24-Valve			1.970" (50.00 mm)
Installed Height
12-Valve			1.591" (40.41 mm)
24-Valve			1.740" (44.20 mm)
Out-Of-Square
Standard			2°
Limit			4°
Lbs. @ In. (kg @ mm)
Pressure - Valves Closed			74 @ 1.591 (33.6 @ 40.41)

CYLINDER HEAD

Application					Specification
Cylinder Head Height
12-Valve					3.310" (84.07 mm)
24-Valve					4.720" (120.00 mm)
Maximum Warpage					.008" (.20 mm)
Valve Seats (Intake & Exhaust)
Seat Angle					45-45.5°
Seat Width					.035-.051" (.90-1.30 mm)
Seat Bore Diameter					1.732-1.742" (44.00-44.25 mm)
Valve Guides
Intake Valve
Valve Guide Cyl. Head Bore I.D.
12-Valve					.516" (13.10 mm)
24-Valve					.433" (11.00 mm)
Valve Guide Length					1.732" (44 mm)
Stem-To-Guide Clearance
Standard
12-Valve					.0012-.0024" (.030-.060 mm)
24-Valve					.0008-.0020" (.020-.050 mm)
Limit					.004" (.10 mm)
Exhaust Valve
Valve Guide Cyl. Head Bore I.D.
12-Valve					.516" (13.10 mm)
24-Valve					.433" (11.00 mm)
Valve Guide Length					1.890" (48 mm)
Stem-To-Guide Clearance
Standard
12-Valve					.0020-.0035" (.051-.089 mm)
24-Valve					.0016-.0028" (.040-.070 mm)
Limit					.006" (.15 mm)

CAMSHAFT

Application				In. (mm)
End Play
Standard				.004-.008 (.10-.20)
Limit				.015 (.40)
Journal Diameter
12-Valve				1.34 (34.0)
24-Valve				1.77 (44.9)
Lobe Height
12-Valve
Standard				1.620 (41.15)
Limit				1.600 (40.64)
24-Valve
Intake
Standard				1.480 (37.60)
Limit				1.500 (37.00)
Exhaust
Standard				1.450 (37.00)
Limit				1.400 (36.50)
Oil Clearance				.0020-.0035 (.050-.090)

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.