Head Bolt Hole Crack Repair with Lock-N-Stitch Full-Torq Thread Repair Insert

This is a big block Chevy engine block that had a crack from a head bolt hole to a coolant jacket hole. We repaired it by machining the head bolt hole for a Lock-N-Stitch Full-Torq thread repair insert. The Full-Torq inserts have a special angled thread on their OD. The special thread actually pulls the surrounding material inward that the insert is threaded into. This pulling action holds the surrounding material together which retains the crack rather than pushing outward like typical thread repair inserts do.
Motor Mission Machine & Radiator 5435 Desert Point Dr. Las Vegas, Nv. 89118 Phone: (702) 649-2366 or (702) 649-0648 Fax: (702) 649-4133 www.MotorMission.com Facebook.com/MotorMission

2017-07-24T21:03:30+00:00 July 24th, 2017|Machine Shop|