The piston rod spike is a delicate and important component within a car engine. It is mounted between the connecting rod (piston rod) and the crankshaft to allow smooth, precise movement without direct metal-to-metal friction, thus preserving engine life and performance.
Pajero moving spike specifications:
- Country of Origin: Japan
- Car brand: Mitsubishi
- Product Number: MD311928
- Compatible models: Mitsubishi Pajero 3500 engine
- Mitsubishi L200 Pickup 3500cc
✅ Main function:
- Provides a smooth sliding surface:
- Allows the connecting rod to rotate smoothly around the crankshaft.
- Reduce friction and wear:
- Prevents direct contact between the rod and the crank.
- Distribution of pressure resulting from reciprocating motion:
- Withstands high pressures resulting from continuous piston movement.
⚙️ Mechanism of action:
- The spike is usually in the form of two metal halves that fit inside the connecting rod hole.
- It is charged by oil pressure through passages inside the crankshaft to provide constant lubrication during operation.
- Varies depending on shaft dimensions or wear condition (sizes: STD - 0.25 - 0.50...).
🔧 Symptoms of bearing damage, conrod:
- Metallic clicking noise from under the engine (especially during cold start or acceleration).
- Low engine oil pressure.
- Abnormal vibrations.
- Crankshaft damage or engine stalling in severe cases.
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