How to use a HELI Coil tool to repair a stripped thread.

**threedogs** · 22nd April 2016, 01:00 PM

Originally Posted by mudnut

Good write up< TD. I recommend using anti seize on the bolt or stud that goes into the helicoil, because if the seize they will destroy the helicoil and make it very hard to repair.

Excellent Idea as you have two dis-similar metals your bound to get electrolysis.
Never seize would be perfect
http://www.ebay.com.au/itm/161848123...%3AMEBIDX%3AIT

**Cuppa** · 22nd April 2016, 08:34 PM

Is this an unusual thermostat housing? Most I recall seeing just have plain holes with the bolts screwing into threaded holes in the surface the housing mates to.

**mudski** · 22nd April 2016, 08:52 PM

Originally Posted by Cuppa

Is this an unusual thermostat housing? Most I recall seeing just have plain holes with the bolts screwing into threaded holes in the surface the housing mates to.

Its off a ZD30 cuppa. it bolts up a real different way to how you would think.

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**the evil twin** · 22nd April 2016, 09:35 PM

Originally Posted by Touses

Handy DIY that 3D. Does the helicoil require a bit of thread locker, as a just in case, for vibration?

I always, well after it happened to me years ago when i didn't, I subsequently always put Loctite on the helicoil and anti-seize on the bolt.

Nothing is worse than trying to undo the bolt at a later date and realising the bloody helicoil is coming with it

**Nightjar** · 23rd April 2016, 09:01 AM

Great invention, has probably saved many costly replacements.

**threedogs** · 23rd April 2016, 11:20 AM

Originally Posted by Nightjar

Great invention, has probably saved many costly replacements.

Somewhere,,, some one is sitting on a beach drinking a drink with an umbrella sticking out of it........lol

**threedogs** · 23rd April 2016, 12:08 PM

Originally Posted by Cuppa

Is this an unusual thermostat housing? Most I recall seeing just have plain holes with the bolts screwing into threaded holes in the surface the housing mates to.

The thermostat "housing" is part of the block say similar to a starter motor
The bolts go through the block and then screw onto the thermostat housing, LOL
Being dis-similar metals you're bound to get electrolysis and this is where the problem
begins, they bond together and thats that...lol

**threedogs** · 23rd April 2016, 02:05 PM

I think loctite 243 would be the go from memory not sure of the heat rating though.
Here's a pic of the thread once removed from the bolt lol

**growler2058** · 23rd April 2016, 03:44 PM

Originally Posted by threedogs

Somewhere,,, some one is sitting on a beach drinking a drink with an umbrella sticking out of it........lol

Me very soon

**threedogs** · 23rd April 2016, 03:59 PM

Originally Posted by growler2058

Me very soon

Oh shite is it that time of year already ????

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