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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSSUBARU1998LEGACY OUTBACK SPORT AWD F4-2.2L SOHCREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER BLOCK ASSEMBLYPISTON RING, ENGINE
1998 Subaru Legacy Outback Sport AWD F4-2.2L SOHC
Piston Ring, Engine
1998 Subaru Legacy Outback Sport AWD F4-2.2L SOHCSECTION Piston Ring, Engine
Piston Ring Gap:
Top Ring:
Standard 0.20 - 0.35 mm (0.0079 - 0.0138 inch)
Limit 1.0 mm (0.039 inch)
Second Ring:
Standard 0.20 - 0.50 mm (0.0079 - 0.0197 inch)
Limit 1.0 mm (0.039 inch)
Oil Ring:
Standard 0.20 - 0.70 mm (0.0079 - 0.0276 inch)
Limit 1.5 mm (0.059 inch)
Clearance Between Piston Ring and Piston Ring Groove:
Top Ring:
Standard 0.040 - 0.080 mm (0.0016 - 0.0031 inch)
Limit 0.15 mm (0.0059 inch)
Second Ring:
Standard 0.030 - 0.070 mm (0.0012 - 0.0028 inch)
Limit 0.15 mm (0.0059 inch)
Top Ring:
Standard 0.20 - 0.35 mm (0.0079 - 0.0138 inch)
Limit 1.0 mm (0.039 inch)
Second Ring:
Standard 0.20 - 0.50 mm (0.0079 - 0.0197 inch)
Limit 1.0 mm (0.039 inch)
Oil Ring:
Standard 0.20 - 0.70 mm (0.0079 - 0.0276 inch)
Limit 1.5 mm (0.059 inch)
Clearance Between Piston Ring and Piston Ring Groove:
Top Ring:
Standard 0.040 - 0.080 mm (0.0016 - 0.0031 inch)
Limit 0.15 mm (0.0059 inch)
Second Ring:
Standard 0.030 - 0.070 mm (0.0012 - 0.0028 inch)
Limit 0.15 mm (0.0059 inch)
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.