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.
Pistons, Piston Pins & Piston Rings Specifications
2004 Acura 3.5RLSECTION Pistons, Piston Pins & Piston Rings Specifications
WARNING: This page is about a different car, the 2002 Acura MDX and 2001 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.
PISTONS, PINS & RINGS
| Application | In. (mm) | |||||
|---|---|---|---|---|---|---|
| Pistons | ||||||
| Clearance In Cylinder | ||||||
| Standard | .0006-.0016 (.015-.040) | |||||
| Service Limit | .003 (.08) | |||||
| Diameter (1) | ||||||
| Standard | 3.5029-3.5033 (88.975-88.985) | |||||
| Service Limit | .003 (.08) | |||||
| Piston Pins | ||||||
| Outside Diameter | ||||||
| Standard | .8646-.8648 (21.962-21.965) | |||||
| Service Limit | .8643 (21.954) | |||||
| Pin-To-Piston Clearance | ||||||
| Standard | -.00020- +.00004 (-.0050- +.0010) | |||||
| Service Limit | .0002 (.005) | |||||
| Rings | ||||||
| Ring Groove Width | ||||||
| Top | ||||||
| Standard | .0488-.0492 (1.240-1.250) | |||||
| Service Limit | .049 (1.25) | |||||
| Second | ||||||
| Standard | .0480-.0484 (1.220-1.230) | |||||
| Service Limit | .049 (1.25) | |||||
| Oil | ||||||
| Standard | .1104-.1112 (2.805-2.825) | |||||
| Service Limit | .112 (2.85) | |||||
| Ring-To-Groove Side Clearance | ||||||
| Top | ||||||
| Standard | .0022-.0031 (.055-.080) | |||||
| Service Limit | .005 (.13) | |||||
| Second | ||||||
| Standard | .0012-.0022 (.030-.055) | |||||
| Service Limit | .005 (.13) | |||||
| Ring End Gap | ||||||
| Top | ||||||
| Standard | .008-.014 (.20-.35) | |||||
| Service Limit | .024 (.60) | |||||
| Second | ||||||
| Standard | .016-.022 (.40-.55) | |||||
| Service Limit | .028 (.70) | |||||
| Oil | ||||||
| Standard | .008-.028 (.20-.70) | |||||
| Service Limit | .031 (.79) | |||||
|
||||||
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.