Thread Restoration
We do many thread repairs
Before
After
Aftermarket TA Buick 455 aluminum head with botched
installation of carbon steel
thread inserts in exhaust manifold bolt holes. They were not swaged into place.
Most inserts broke or backed out. All thread inserts were removed and
replaced with stainless steel inserts and properly swaged into place.
Click here for example of aluminum head repair. Repair
Click here for example of aluminum head
modification. Mercedes 230