Upper Connecting Rod Bearing for Mitsubishi Engines 🔧
This upper con-rod bearing is the precision shell that supports the connecting rod on the crankshaft journal. It keeps the rod centered, carries heavy load, and maintains a stable oil film for smooth, quiet rotation. Built to OE-style dimensions for Mitsubishi powertrains, it restores correct clearance, oil control, and reliable engine performance. 🛠️
Why this part is needed
Heat, contaminated oil, and long service cause bearing surfaces to wear. Replacing the upper shell during overhaul or when clearance is out of spec prevents crank journal damage, keeps oil pressure healthy, and protects pistons and rods from costly failure.
How it works
The shell rides on pressurized engine oil, not metal-on-metal. Grooves and feed holes in the upper half route oil to the crankpin, forming a hydrodynamic film. Proper crush and locating tangs lock it in the rod, so it cannot spin while the crank turns at high speed. 🔩
What happens if it’s worn or broken
Symptoms include cold-start knock, low oil pressure, glitter in oil, and rising temps. If a shell scores or spins, it can seize the journal, bend a rod, or snap the crank. Ignoring noise turns a simple bearing job into a full rebuild. ⚠️
Tech notes
Measure journal and housing bore, verify clearance with plastigage, lubricate on install, and torque rod bolts to spec. Always use clean oil and a primed system on first start. 🧰
Compatibility
- Eclipse Cross
- L200
- Triton
- Strada
- Delica D:5
- L300
