Conrod Machining – FAQs
Conrod machining involves inspecting and correcting the “big-end” and “little-end” tunnels of connecting rods to ensure proper size, shape, and alignment. This is critical for engine reliability, efficiency, and longevity.
Big-End Tunnel: Houses the crankshaft journal. If out of spec, the parting faces of the rod and cap are machined and finish honed to restore proper alignment.
Little-End Tunnel: Houses the piston pin. For bushed (fully floating) little-ends, bushes can be replaced and resized. For press-fit setups, roundness and interference are verified, and rods replaced if necessary.
It’s needed during engine rebuilds or reconditioning when wear, distortion, or misalignment is detected. Performance and race engines also benefit from blueprinting adjustments.
Proper machining ensures smooth rotation, reduced friction, and correct alignment of the rotating assembly. This contributes to longer engine life, improved efficiency, and reliable performance.
Most rods can be machined, but severely damaged or bent rods may need replacement. Our team inspects each rod and recommends the best solution.
Keywords: conrod machining Auckland, big-end honing, little-end bush replacement, connecting rod alignment, engine rebuild components