Technical Specifications 2.0L 16V U20SED (Optra/Forenza)

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Tech Specs for U20SED

Camshaft

Bearing Journal OD
42.455-43.470 mm
1.6714-1.7114 in

Camshaft Cap to Bearing Journal Clearance
0.04-0.144 mm
0.0015-0.0056 in

Lift - Exhaust
9.2 mm
0.36 in

Lift - Intake
9.2 mm
0.36 in

Connecting Rod Journal

Diameter - All
48.981-48.987 mm
1.9283-1.9286 in

Out of Round - Maximum
0.004 mm
0.00015 in

Rod Bearing Clearance
0.013-0.041 mm
0.0005-0.0016 in

Rod Bearing Play
0.006-0.031 mm
0.00023-0.00122 in

Crankshaft

End Play
0.070-0.302 mm
0.0027-0.0118 in

Main Bearing Clearance - All
0.015-0.040 mm
0.00059-0.00157 in

Main Journal Diameter - All
57.974-57.995 mm
2.2788-2.2832 in

Radial Runout - Shaft Support on No. 1 and No. 5 Bearings Measured at No. 3 Journal
0.03 mm
0.00118 in

Service Oversize, Available in 2 Sizes
0.25 and 0.5 mm
0.00098 and 0.019 in

Cylinder Bore

Block Face Distortion
0.01 mm Max
0.00039 in

Cylinder Bore Taper - Maximum
0.013 mm
0.0005 in

Diameter
85.975-86.025 mm
3.384-3.386 in

Out of Round - Maximum
0.013 mm
0.0005 in

Oversize - Measure Replacement Piston before Re-boring
Available in 0.50 mm to Suit Bore
0/019 in

Service Replacement Standard Bore
4 Piston, Pin, and Ring Assemblies Available

Cylinder Head

Maximum Valve Stem Protrusion
39.2 mm
1.544 in

Minimum Overall Height After Machining
133.9 mm
5.271 in

Overall Height
133.975 - 134.025 mm
5.2746 - 6.2766 in

Valve Guide Height
13.7-14.0 mm
0.53-0.55 in

General Data

Bore
86 mm
3.4 in

Bore Stroke
86 X 86 mm
3.38 in X 3.38 in

Compression Ratio
9.6:1

Displacement
1 998 cm³
121 in³

Engine Type
4 Cylinder-In-Line

Firing Order
1-3-4-2

Lubricating Type
Forced Feed

Maximum Power - at 5,400 RPM
95 kW
127.4 hp

Maximum Torque - at 4,200 RPM
180 N·m
132.8 lb ft

Oil Filter Type
Cartridge (Full Flow)

Oil Pan Capacity - with Oil Filter
4.0 liter
4.2 quarts

Oil Pump Type
Duocentric

Piston

Clearance to Bore
0.010-0.030 mm
0.00039-0.0011 in

Diameter
85.955-86.485 mm
3.384-3.404 in

Maximum Piston Protrusion
0.5 mm
0.019 in

Piston Taper
0.013 mm
0.0005 in

Piston Pin

Clearance - In Piston
0.0035-0.0140 mm
0.00013-0.00055 in

Clearance - In Rod
Interference Fit in Rod

Diameter
20.9970-20.9985 mm
0.82665-0.82671 in

Length
61.5 mm
2.42 in

Pin Offset - Toward Thrust Side
0.8 mm
0.03 in

Oil Pump

End Clearance
0.03-0.10 mm
0.001-0.003 in

Gear Lash
0.10-0.20 mm
0.003-0.007 in

Inner Gear to Crescent
0.35-0.40 mm
0.013-0.015 in

Outer Gear to Body
0.11-0.19 mm
0.004-0.007 in

Outer Gear to Crescent
0.40-0.50 mm
0.015-0.01 in

Piston Rings

Oil
0.4-1.4 mm
0.0015-0.055 in

Ring, End Gap, Second Compression
0.3-0.5 mm
0.011-0.019 in

Ring, End Gap, Top Compression
0.3-0.5 mm
0.011-0.019 in

Sealants and Adhesives

Camshaft Carrier-to-Cylinder Head
HN 1581 (LOCTITE® 515)

Coolant Jacket Caps and Plugs - Freeze Plugs
HN 1756 (LOCTITE® 176)

Exhaust Manifold Studs/Nuts
Anti-seize Compound (HMC Spec HN 1325)

Oil Gallery Plug
HN 1256 (LOCTITE® 242)

Oil Pan Bolts
HN 1256 (LOCTITE® 242)

Oil Pan Pickup Tube Bolts
HN 1256 (LOCTITE® 242)

Oil Pump Bolts
HN 1256 (LOCTITE® 242)

Rear Main Bearing Cap
GE p/n RTV 159

Valve System

Face Runout - Maximum, All
0.03 mm
0.001 in

Seat Runout - Maximum, All
0.03 mm
0.001 in

Valve Diameter Intake
32 ± 0.1 mm
1.2598 ± 0.0039 in

Valve Diameter Intake - Exhaust
29 ± 0.1 mm
1.1417 ± 0.0039 in

Valve Guide Inside Diameter
6.000-6.012 mm
0.236-0.237 in

Valve Lash Compensators
Hydraulic

Valve Face Angle
44°

Valve Stem Diameter Intake
5.945-5.960 mm
0.234-0.235 in

Valve Stem Diameter Intake - Exhaust
5.945-5.960 mm
0.234-0.235 in

Valve Seat Angle
45°

Valve Seat Width Intake
1.0-1.5 mm
0.039-0.059 in

Valve Seat Width Intake - Exhaust
1.7-2.2 mm
0.066-0.086 in

[PrecisionBoost]

U20SED Ignition system specifications

[exist3nce]

Thought I might as well add these....... they should look familiar Chris haha.

2004 Optra ECU pinouts - On the ECU you will find markings with the letter K and the letter M, these represent the two connectors shown in the following pictures.