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 MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 261 (ENGINE MECHANICAL)ENGINE SPECIFICATIONSENGINE PISTONS, ENGINE PISTON PINS & ENGINE PISTON RINGS
2004 Toyota Matrix XR, FWD, Standard
Engine Pistons, Engine Piston Pins & Engine Piston Rings
2004 Toyota Matrix XR, FWD, StandardSECTION Engine Pistons, Engine Piston Pins & Engine Piston Rings
WARNING: This page is about a different car, the 2002 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.
ENGINE PISTONS, ENGINE PISTON PINS & ENGINE PISTON RINGS
| Application | In. (mm) | |||||
|---|---|---|---|---|---|---|
| Pistons | ||||||
| Clearance | ||||||
| Standard | .0033-.0041 (.084-.104) | |||||
| Wear Limit | .0049 (.124) | |||||
| Diameter | ||||||
| Size Mark "1" | 3.5791-3.5795 (90.909-90.919) | |||||
| Size Mark "2" | 3.5795-3.5798 (90.919-90.927) | |||||
| Size Mark "3" | 3.5798-3.5802 (90.927-90.937) | |||||
| Pins | ||||||
| Diameter | .8660-.8664 (21.996-22.007) | |||||
| Piston Fit | (1) | |||||
| Rod Fit | ||||||
| Standard | .0002-.0004 (.005-.010) | |||||
| Wear Limit | .0020 (.050) | |||||
| Oil Clearance | ||||||
| Standard | .0002-.0004 (.005-.010) | |||||
| Wear Limit | .0020 (.050) | |||||
| Rings | ||||||
| No. 1 | ||||||
| End Gap | ||||||
| Standard | .0118-.0157 (.299-.399) | |||||
| Maximum | .0413 (1.050) | |||||
| Side Clearance | .0012-.0028 (.030-.079) | |||||
| No. 2 | ||||||
| End Gap | ||||||
| Standard | .0157-.0197 (.399-.500) | |||||
| Maximum | .0472 (1.199) | |||||
| Side Clearance | .0008-.0024 (.020-.061) | |||||
| No. 3 (Oil) | ||||||
| End Gap | ||||||
| Standard | .0059-.0157 (.150-.399) | |||||
| Wear Limit | .0433 (1.100) | |||||
|
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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.