Repair Cracked Blocks
There are several different ways to repair cracks in blocks and heads.
If it protrudes out away from the block like a mount or a starter bolt hole it is usually best to weld using a nickel flame spay system.
If it is in a long flat area it is better to pin it using Lock-N-Stitch pins.
On heads, if it is a small crack starting to appear near the seat area, it is often possible to machine away the crack and install a valve seat.
If it is a crack in a cylinder wall we can usually sleeve the cylinder.
If it is a crack in a threads of a head bolt hole we have a special insert made to strengthen the bolt hole.
We can usually repair any part of an aluminum block.