Thread Repair Tools / Inserts

TIME-SERT 5761E 7/16-14 Big Sert Chevy Big Block Head Bolt Thread Repair Kit

TIME-SERT 5761E 7/16-14 Big Sert Chevy Big Block Head Bolt Thread Repair Kit image

Product #: Time 5761E DLT


Your Price: $126.62


Time Sert 5761E Big Sert kit, made by Time Sert in the USA. Big Sert means it's "oversized" for use when a Helicoil or a competitive brand has failed. The 5761E is used in cast iron chevy big blocks after a Heli Coil has maded the hole bigger. It has a larger outside diameter but still accepts the original size 7/16-14 head bolts. If doing a first time repair the oversize kit is not needed, we recommend using the Time Sert 0761D

  • Core Drill Bit (Reamer) 37/64"
  • Counterbore (with pilot assembly) The counter-bore tool is needed to allow the inserts to sit flush as to not interfere with the cylinder head.
  • Tap - 7/16 Big Sert 
  • Tap Guide pn 57655 - for guiding the tooling straight.
  • Installation Driver - for installing insert by cold rolling threads and expanding the bottom locking it into place.
  • Includes 5 Inserts .60" length pn 57611- Big Sert inserts have a larger O.D.
  • Loctite 266 - Permanent high temperature red loctite.

*Time Sert is the only GM approved method for repairing head bolt threads.


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