Home ReviewsRefund
Home/Kia/Optima/Kia Optima I (2000-2002)/Repair manual/Mechanical/2.5L V6 Engine: Specifications
Contents Wiring diagrams Section: Mechanical All sections

2.5L V6 Engine: Specifications Kia Optima I

Mechanical

Crankcase Capacity

Fill capacity including oil filter change is 4.76 qts. (4.5L).

TORQUE SPECIFICATIONS

ApplicationFt. Lbs. (N.m)
Air Intake Surge Tank
Mounting Bolt/Nut11-14 (15-19)
Auto Tensioner Arm Bolt26-40 (35-54)
Camshaft Sprocket Bolt65-80 (88-108)
Connecting Rod Cap Bolt
Step 112-14 (16-19)
Step 2Additional 90-94 Degrees
Crankshaft
Main Bearing Cap Bolt
M8 Bolt
Step 110-13 (14-18)
Step 2Additional 90-95 Degrees
M10 Bolt
Step 120-24 (27-33)
Step 2Additional 90-95 Degrees
Pulley Bolt130-138 (176-187)
Cylinder Head Bolt (1)
Step 118 (24)
Step 2Additional 60-64 Degrees
Step 3Additional 45-49 Degrees
Engine Mounts
Insulator Bolt65-80 (88-108)
Bracket Bolt/Nut43-58 (58-79)
Front Roll Stopper
Bracket-To-Subframe Bolt43-58 (58-79)
Bracket-To-Transaxle Bolt43-58 (58-79)
Insulator Bolt/Nut37-48 (50-60)
Rear Roll Stopper
Bracket-To-Subframe Bolt37-48 (50-60)
Bracket-To-Transaxle Bolt36-47 (49-64)
Insulator Bolt/Nut36-47 (49-64)
Transaxle Mount
Bracket Bolt/Nut43-58 (58-79)
Insulator Bolt65-80 (88-108)
Exhaust Manifold-To-Cylinder Head Nut18-22 (24-30)
Exhaust Pipe
Pipe-To-Manifold Nut22-29 (30-39)
Pipe-To-Catalytic Converter Bolt29-43 (39-58)
Flywheel-To-Crankshaft Bolt53-55 (72-75)
Intake Manifold Mounting Bolt/Nut14-15 (19-20)
Oil Pan Drain Plug26-32 (35-43)
Oil Pan Screen Bolt11-15 (15-20)
Oil Pump Relief Valve Plug29-36 (39-48)
Starter
Bolt20-25 (27-34)
Nut14-22 (19-30)
Thermostat Housing11-14 (15-19)
Throttle Body-To-Intake Manifold Bolt11-15 (15-20)
Timing Belt Assembly
Auto Tensioner Fixed Bolt14-20 (19-27)
Auto Tensioner Pulley Bolt31-40 (42-540
Idler Pulley Bolt36-43 (48-58)
Water Pump Mounting Bolt11-16 (15-22)
INCH Lbs. (N.m)
Camshaft Bearing Cap Bolt89-106 (10-12)
Cylinder Head Cover Bolts44-53 (5-6)
Exhaust Manifold Heat Shield Bolt106-133 (12-15)
Oil Pan Bolt
Lower Pan89-106 (10-12)
Upper Pan(2)
Oil Pressure Switch71-106 (8-12)
Oil Pump
Case Bolt106-133 (12-15)
Cover Screw71-106 (8-12)
Rear Oil Seal Case Bolt89-106 (10-12)
Timing Belt Assembly Cover Bolt89-106 (10-12)
Water Pump Pulley Bolt71-89 (8-10)
(1) Tighten in sequence with engine cold. (Схема №4) (2) See OIL PUMP under REMOVAL & INSTALLATION for bolt identification and tightening specifications.
(1)Tighten in sequence with engine cold. (Схема №4)
(2)See OIL PUMP under REMOVAL & INSTALLATION for bolt identification and tightening specifications.

TORQUE SPECIFICATIONS

GENERAL SPECIFICATIONS

ApplicationSpecification
Displacement149.5 Cu. In. (2.5L)
Bore3.31 In. (84.1 mm)
Stroke2.99 In. (75.9 mm)
Compression Ratio10:1
Fuel SystemMFI

GENERAL SPECIFICATIONS

CRANKSHAFT, MAIN BEARINGS & CONNECTING ROD BEARINGS SPECIFICATIONS

ApplicationIn. (mm)
Crankshaft
End Play.0028-.0098 (.071-.250)
Runout.012 (.30)
Main Bearings
Journal Diameter2.4402-2.4409 (61.981-62.000)
Journal Out-Of-Round.0001 (.003)
Journal Taper.0002 (.005)
Oil Clearance.0002-.0009 (.005-.023)
Connecting Rod Bearings
Journal Diameter1.8891-1.8898 (47.983-48.000)
Journal Out-Of-Round.0001 (.003)
Journal Taper.0002 (.005)
Oil Clearance.0007-.0014 (.018-.036)

CRANKSHAFT, MAIN & CONNECTING ROD BEARINGS

CONNECTING RODS SPECIFICATIONS

ApplicationIn. (mm)
Maximum Bend (1).002 (.05)
Maximum Twist (1).004 (.10)
Side Play
Standard.004-.010 (.10-.25)
Service Limit.016 (.40)
(1) Maximum bend per 3.937" (100 mm).
(1)Maximum bend per 3.937" (100 mm).

CONNECTING RODS

PISTONS, PISTON PINS & PISTON RINGS SPECIFICATIONS

ApplicationIn. (mm)
Pistons
Clearance.0004-.001 (.010-.025)
Diameter (2)3.3063-3.3075 (83.980-84.010)
Rings
Side Clearance
No. 1.0016-.0031 (.040-.080)
No. 2.0012-.0028 (.030-.071)
Service Limit.004 (.010)
End Gap
No. 1.0079-.0138 (.201-.350)
No. 2.0146-.0205 (.370-.520)
Service Limit (No. 1 & 2).031 (.80)
No. 3 (Oil).0079-.0276 (.201-.701)
Service Limit (No. 3).039 (1.00)
(1) Pin specifications are not available from manufacturer. (2) Diameter is measured at specified location, at 90 degree angle to piston pin. See CYLINDER BLOCK under OVERHAUL.
(1)Pin specifications are not available from manufacturer.
(2)Diameter is measured at specified location, at 90 degree angle to piston pin. See CYLINDER BLOCK under OVERHAUL.

PISTONS, PINS (1) & RINGS

CYLINDER BLOCK SPECIFICATIONS

ApplicationIn. (mm)
Cylinder Bore
Standard Diameter3.3091-3.3087 (84.000-84.040)
Maximum Taper.0008 (.020)
Maximum Out-Of-Round.0008 (.020)
Maximum Deck Warpage (1).0012 (.030)
(1) If deck warpage exceeds specification, machine deck surface. DO NOT remove more than a combined total of .008" (.20 mm) material from original surfaces of cylinder head and cylinder block.
(1)If deck warpage exceeds specification, machine deck surface. DO NOT remove more than a combined total of .008" (.20 mm) material from original surfaces of cylinder head and cylinder block.

CYLINDER BLOCK

ENGINE VALVES & VALVE SPRINGS SPECIFICATIONS

ApplicationSpecification
Intake Valves
Length3.7835" (96.101 mm)
Valve Head Thickness (Margin)
Standard.040" (1.00 mm)
Service Limit.02" (.5 mm)
Stem Diameter.2348-.2354" (5.964-5.980 mm)
Exhaust Valves
Length3.825" (97.15 mm)
Valve Head Thickness (Margin)
Standard.051" (1.30 mm)
Service Limit.032" (.081 mm)
Stem Diameter.2343-.2348" (5.951-5.964 mm)
Valve Face Angle45-45.5 Degrees
Valve Springs
Free Length
Standard1.673" (42.50 mm)
Service Limit1.634" (41.50 mm)
Installed HeightN/A
Out-Of-Square3 Degrees (Maximum)
Lbs. @ In. (kg @ mm)
Pressure @ Installed Height49 lbs. @ 1.378 In. (22 kg @ 35.00 mm)

VALVES & VALVE SPRINGS

CYLINDER HEAD SPECIFICATIONS

ApplicationSpecification
Maximum Warpage
Gasket Surface.0012" (.030 mm)
Manifold Surface.0059" (.150 mm)
Valve Guides
Intake Valve
Length1.53" (39.0 mm)
Valve Stem-To-Guide Oil Clearance
Standard.0009-.0020" (.020-.050 mm)
Service Limit.004" (.10 mm)
Exhaust Valve
Length1.69" (43.0 mm)
Valve Stem-To-Guide Oil Clearance
Standard.0014-.0026" (.035-.066 mm)
Service Limit.0059" (.150 mm)

CYLINDER HEAD

CAMSHAFT SPECIFICATIONS

ApplicationIn. (mm)
End Play.0039-.0059 (.100-.150)
Journal Diameter
Standard1.0222-1.0228 (25.964-25.980)
Service Limit1.0202 (25.913)
Lobe Height
Standard1.7303-1.7382 (43.950-44.150)
Service Limit1.7106 (43.450)
Oil Clearance
Standard.0039-.0059 (.100-.150)
Service Limit.0039 (.100)

CAMSHAFT

More articles — 2.5L V6 Engine