Repair Damaged Or Worn Threads
WARNING: This page is about a different variant/trim than selected.
CAUTION:
Be sure that the tapped holes maintain the original center line.
Damaged or worn threads cannot be repaired in the following locations:
- Spark plug threads in the cylinder head.
- Camshaft bearing cap attaching threads.
- Crankshaft main bearing cap bolt threads in the engine block.
- Cylinder head bolt holes in the engine block.
Damaged or worn threads can be repaired. Essentially, this repair consists of:
- Drilling out worn or damaged threads.
- Tapping the hole with a special Heli-Coil Tap.
- Installing an insert into the tapped hole to bring the hole back to its original thread size.