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 MANUALSCHEVROLET1993LUMINA APV V6-3800 3.8LREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER BLOCK ASSEMBLYPISTON RING, ENGINE
1993 Chevrolet Lumina APV V6-3800 3.8L
Piston Ring, Engine
1993 Chevrolet Lumina APV V6-3800 3.8LSECTION Piston Ring, Engine
Ring Groove Depth
Top Compression 4.3894.519 mm (0.173-0.178 in.)
2nd Compression 4.389-4.519 mm (0.173-0.178 in.)
Oil Control 4.204-4.334 mm (0.165-0.171 in.)
End Gap
Top Compression 0.2540.635 mm (0.0100.025 in.)
2nd Compression 0.254-0.635 mm (0.010-0.025 in.)
Oil Control 0.381-1.397 mm (0.015-0.055 in.)
Side Clearance
Top Compression 0.033-0.079 mm (0.0013-0.0031 in.)
2nd Compression 0.033-0.079 mm (0.0013-0.0031 in.)
Oil Control 0.028-0.206 mm (0.011-0.0081 in.)
Ring Width
Top Compression 1.476-1.497 mm (0.0581A).0589 in.)
2nd Compression 1.47-1.497 mm (0.0581-0.0589 in.)
Oil Control 2.850-3.002 mm (0.1122-0.1182 in.)
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.