Heli Coil

diverman62 · Mar 17, 2020

Having problems with my V8 mk2 Discovery 4ltr Petrol.
No1 spark plug seems to tighten up okay but when I drive the plug pops out after about a minute. wondering if anyone knows of a suitable kit to repair the threads without removing the head??
Thanks in anticipation
Colin

JUKE179r · Mar 17, 2020

Can't help you there mate but welcome to the forum.

Western Slope Rover · Mar 17, 2020

I once fixed that problem with a piece of aluminium from a Mountain Dew can. Then I put in a heli coil. Sounds terrible when the plug pops out!

Western Slope Rover · Mar 17, 2020

Western Slope Rover said:
I once fixed that problem with a piece of aluminium from a Mountain Dew can. Then I put in a heli coil. Sounds terrible when the plug pops out!

Western Slope Rover · Mar 17, 2020

kermit_rr · Mar 17, 2020

hi there and welcome!
if you do it yourself, make sure you do it right first time!!!! they are a bugger to get out

RangeRoller dt · Mar 17, 2020

+1 heli Coil

Rubberknees · Mar 17, 2020

Once hardened an old spark plug by heat treating it, cut up threads like a tap , loads of grease and slowly retapped out . Works once so get it right

NewDragon81 · Mar 18, 2020

A slightly better solution than helicoil is a timesert which unlike the helicoils is a solid insert rather than a wire one. I've used both types in the past and would use the timesert, even though they are more expensive, over helicoil every time if available.

Hippo · Mar 29, 2020

Welcome to the forum

Heli Coil

diverman62

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JUKE179r

Well-Known Member

Western Slope Rover

Well-Known Member

Western Slope Rover

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Western Slope Rover

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kermit_rr

Very

RangeRoller dt

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Rubberknees

Well-Known Member

NewDragon81

Active Member

Hippo

Lord Hippo

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