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 MANUALSSUBARU2008FORESTER F4-2.5L DOHC TURBOREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER BLOCK ASSEMBLYCONNECTING ROD BEARING
2008 Subaru Forester F4-2.5L DOHC Turbo
Connecting Rod Bearing
2008 Subaru Forester F4-2.5L DOHC TurboSECTION Connecting Rod Bearing
Connecting rod
Bend or twist per 100 mm (3.94 in) in length
Limit 0.10 mm (0.0039 in)
Thrust clearance
Standard 0.070 - 0.330 mm (0.0028 - 0.0130 in)
Limit 0.4 mm (0.016 in)
Bearing of large end
Oil clearance
Standard 0.017-0.045 mm (0.0007-0.0018 in)
Limit 0.05 mm (0.0020 in)
Bearing size (Thickness at center)
Standard 1.490-1.502 mm (0.0587-0.0591 in)
0.03 (0.0012) US 1.504-1.512 mm (0.0592-0.0595 in)
0.05 (0.0020) US 1.514-1.522 mm (0.0596-0.0599 in)
0.25 (0.0098) US 1.614-1.622 mm (0.0635-0.0639 in)
Bushing of small end Clearance between piston pin and bushing Standard 0 - 0.022 mm (0 - 0.0009 in)
Limit 0.030 mm (0.0012 in)
Bend or twist per 100 mm (3.94 in) in length
Limit 0.10 mm (0.0039 in)
Thrust clearance
Standard 0.070 - 0.330 mm (0.0028 - 0.0130 in)
Limit 0.4 mm (0.016 in)
Bearing of large end
Oil clearance
Standard 0.017-0.045 mm (0.0007-0.0018 in)
Limit 0.05 mm (0.0020 in)
Bearing size (Thickness at center)
Standard 1.490-1.502 mm (0.0587-0.0591 in)
0.03 (0.0012) US 1.504-1.512 mm (0.0592-0.0595 in)
0.05 (0.0020) US 1.514-1.522 mm (0.0596-0.0599 in)
0.25 (0.0098) US 1.614-1.622 mm (0.0635-0.0639 in)
Bushing of small end Clearance between piston pin and bushing Standard 0 - 0.022 mm (0 - 0.0009 in)
Limit 0.030 mm (0.0012 in)
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.