Connecting rods carry combustion force from the piston to the crankshaft millions of times. A rod that is bent, out of round or worn at the small end can cause bearing failure, noise and uneven compression.
What to Check
- Bend and twist: check on a rod alignment fixture, especially after a hydrolock or bearing failure.
- Big-end bore: measure for size and roundness with the cap torqued in place.
- Small end: check pin clearance and bushing wear on rods with bushings.
- Rod bolts: inspect threads and replace bolts where the procedure requires.
When to Replace
- Visible bending or cracks.
- Big-end damage after a spun bearing.
- Bores out of specification that cannot be reconditioned.
Assembly Tips
- Keep rods and caps matched and installed in the correct direction.
- Hone small-end bushings to the specified pin clearance.
- Torque rod bolts in stages using the specified method.
Evergreen Parts
Evergreen offers pistons, rings and connecting rods identified by engine or vehicle application. Use the Evergreen eCatalog to find the right part, and see where to buy Evergreen through our authorized distributors.
