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Questions tagged [helicoil]

Helicoil is a brand-name for a thread replacement system, that bores out a stripped mounting hole and lines the inside with a steel replacement thread that looks like a spring. Every thread requires a tap unique to the thread size and pitch being installed, so they often come in a set of tools suitable for a specific thread wise and pitch.

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Helicoil installed from other side?

I have an aluminium clamp on a bike where the thread has stripped. The steel bolt is okay, but the clamp has very little movement - I can't get a helicoil or drill through one side of the clamp ...
Criggie's user avatar
  • 2,908
3 votes
2 answers

Drilling through metal for broken bolt on rear suspension mount using a cobalt bit not working

I have an 01' Cobra and when working on the rear suspension had removed the emergency brake cable mounting bracket and small bolt that is attached to the bottom of the lower control arm. Well the bolt ...
atconway's user avatar
  • 131
2 votes
5 answers

Double-stacking thread-repair inserts (helicoils) in the same hole+thread?

I needed to repair a relatively deep thread, but the inserts I had were not long enough. Is there any reason I can't stack two inside the hole? (please disregard the slight angle, that's just how ...
Criggie's user avatar
  • 2,908
2 votes
5 answers

Spark plug repair kit tap will not grip existing threads in spark plug hole

I have a 2005 Hyundai Elantra that recently blew out a spark plug. My understanding is that I need to re-tap the spark plug hole and insert a sleeve. I purchased the Lisle 65200 plug hole repair kit ...
Terry's user avatar
  • 121
0 votes
0 answers

1977 Honda CB750K stripped threads

My overall question is that I recently replaced the oil pan gasket and learned that the threads where the bolts screw into are stripped. I was wondering if I could use a helicoil repair kit or if ...
OTD2020's user avatar