Detroit Diesel 60 Series Thread Insert Installation Procedure: LS-8707 Guide
By Blog Admin •
This 10-phase procedure uses the LS-8707 insert to repair stripped head bolt holes on Detroit Diesel 60 Series engines—restores strong M16 × 2.00 threads with fixture alignment for head reinstallation.
Introduction: Precise Head Bolt Hole Repair for Detroit 60 Series
The LS-8707 insert with fixture alignment ensures proper axis and torque—vital for gasket sealing and preventing head lift.
Phase 1-3: Preparation & Damaged Hole Assessment
- Secure engine block – Fixture or stand support
- Remove cylinder head – Full access to stripped holes
- Inspect & measure threads – Confirm stripping & depth required
Phase 4-6: Hole Preparation & Insert Installation
- Install M20111-DD alignment fixture – Maintain precise axis
- Ream & tap to 13/16"-16 – Clean, straight, full depth
- Apply thread locker & install LS-8707 – Torque to spec
Phase 7-10: Finishing & Verification
CRITICAL: LS-8707 Insert Protocol
- Trim excess insert if needed – Flush to deck
- Chase M16 × 2.00 internal threads – Clean & true
- Reinstall cylinder head – Torque sequence to Detroit spec
- Pressure test & run engine – Verify no leaks
Critical Warnings: Thread Insert Installation Hazards
AVOID THESE CATASTROPHIC MISTAKES:
- ❌ No alignment fixture – Crooked insert & misalignment
- ❌ Shallow tap depth – Weak thread engagement
- ❌ No thread locker – Insert backing out
- ❌ Over-torque insert – Block cracking risk
- ❌ Skip internal thread chase — Bolt seizure
Why LS-8707 Beats Other Repair Methods
Alternative Risks:
- ❌ Heli-coil → Limited strength & failure risk
- ❌ Oversize bolt → Misalignment & uneven torque
- ❌ Block replacement → $12K–$25K cost
LS-8707 Advantages:
- ✅ Deep 2.50" engagement
- ✅ Accepts standard M16 × 2.00 bolts
- ✅ Fixture-compatible precision
- ✅ Saves block & thousands
- ✅ Bulk pricing to $32.48
- ✅ Proven DD60 solution
Repair Detroit 60 Head Bolt Holes Professionally. M16 Strength. Save Blocks. Boost Rebuild Profits.
Get LS-8707 – $56.00