Does an engine with replaced connecting rods perform the same as normal?
2 Answers
An engine with replaced connecting rods performs the same as normal. More information about connecting rods is as follows: 1. Introduction: The connecting rod is a rod-shaped component that connects the piston and the crankshaft. Its function is to transmit the enormous pressure borne by the piston to the crankshaft, causing the crankshaft to perform circular motion. The connecting rod consists of three parts: the small end, the rod body, and the big end. The small end is integrated with the connecting rod, with a bronze bushing installed inside the hole, connecting to the piston via the piston pin; the rod body has an I-shaped cross-section, which reduces mass while ensuring strength and stiffness, preventing it from twisting under pressure; the big end is divided into upper and lower parts, with the upper part cast integrally with the rod body, and the lower part being the connecting rod bearing cap, connected to the upper part with bolts. To ensure the big end can be smoothly removed from the cylinder, it comes in two forms: straight-cut and oblique-cut. 2. Features: The big end contains two semicircular connecting rod bearings. To reduce friction on the connecting rod journal, the bearing surface is coated with a layer of anti-friction alloy. Positioning between the connecting rod and the bearing cap is generally achieved through three methods: rabbet joint, serrated teeth, and positioning sleeve, ensuring accurate alignment between the two.
How does an engine perform after connecting rod replacement? I've repaired many cars and believe repair quality is crucial. The connecting rod links the piston to the crankshaft, requiring engine disassembly for replacement. If professionally installed with matched parts by skilled technicians, the engine should restore near-original performance—maintaining power output, fuel efficiency, and responsiveness. However, sloppy installation (e.g., improper balance calibration) may cause excess vibration, noise, or power loss, potentially increasing long-term fuel consumption or shortening engine life. I recommend choosing reputable workshops and adding a break-in inspection, similar to new car maintenance. Regular upkeep to prevent overheating or oil starvation helps maintain engine longevity. In summary, properly repaired engines function well, but avoid non-specialized shops for cost savings.
