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 MANUALSSAAB20049-5 LINEAR (9600) L4-2.3L TURBO (2.3T)REPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER BLOCK ASSEMBLYPISTON, ENGINE
2004 Saab 9-5 Linear (9600) L4-2.3L Turbo (2.3t)
Piston, Engine
2004 Saab 9-5 Linear (9600) L4-2.3L Turbo (2.3t)SECTION Piston, Engine
Pistons
General data
Mean piston speed at 5000 rpm
B205 13 m/s
B235 15 m/s
Important: Different makes of piston must not be fitted in the same engine.
Piston types
Classification of pistons and cylinder bores
The piston classification is stamped on the piston crown roof. The piston classes for service are B
First oversize (+0.5)
Second oversize (+1.0)
Piston classification
AB 89.964 - 89.975 mm
B 89.975 - 89.982 mm
First oversize (+0.5) 90.457 - 90.475 mm
Second oversize (+1.0) 90.957 - 90.975 mm
Piston clearance, nominal 0.025 - 0.056 mm
Piston diameter
Piston diameter is measured at right angles to the gudgeon pin holes, 11 mm from the bottom of the piston.
Gudgeon pins
Diameter 23.996 - 24.000 mm
Clearance, gudgeon pin/connecting rod bush 0.012 - 0.021 mm
Length 63 mm
A/B piston fits both A and B cylinder bores 90.000 - 90.020 mm
B piston 90.007 - 90.020 mm
Permitted piston clearance 0.025 - 0.056 mm
General data
Mean piston speed at 5000 rpm
B205 13 m/s
B235 15 m/s
Important: Different makes of piston must not be fitted in the same engine.
Piston types
Classification of pistons and cylinder bores
The piston classification is stamped on the piston crown roof. The piston classes for service are B
First oversize (+0.5)
Second oversize (+1.0)
Piston classification
AB 89.964 - 89.975 mm
B 89.975 - 89.982 mm
First oversize (+0.5) 90.457 - 90.475 mm
Second oversize (+1.0) 90.957 - 90.975 mm
Piston clearance, nominal 0.025 - 0.056 mm
Piston diameter
Piston diameter is measured at right angles to the gudgeon pin holes, 11 mm from the bottom of the piston.
Gudgeon pins
Diameter 23.996 - 24.000 mm
Clearance, gudgeon pin/connecting rod bush 0.012 - 0.021 mm
Length 63 mm
A/B piston fits both A and B cylinder bores 90.000 - 90.020 mm
B piston 90.007 - 90.020 mm
Permitted piston clearance 0.025 - 0.056 mm
RENDER: 1.0x
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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.