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
 

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Last updated: September 20, 2021