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Wales
by Joske Vermeule, September 1
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Forums39
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Jun 14th, 2026
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Joined: Aug 2014
Posts: 199 Likes: 1
L - Learner Plates On
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OP
L - Learner Plates On
Joined: Aug 2014
Posts: 199 Likes: 1 |
My windscreens had been bolted to the bulkhead mounts with the domed bolts plastered with ptfe tape and filler....until today! It was an easy job to remove the brackets, drill, tap and insert helicoils, then clean up the domed bolts, and refit....pleased with the job...
Richard S
1993 4/4
1966 VeloSolex
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Joined: Apr 2008
Posts: 12,263 Likes: 320
Scruffy Oik Member of the Inner Circle
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Scruffy Oik Member of the Inner Circle
Joined: Apr 2008
Posts: 12,263 Likes: 320 |
Yes, If only I'd known about helical inserts back when I was a penniless kid trying to keep my Tigercub on the road, I wouldn't have been guilty of some truly appalling bodges. VCJ 190 is now no longer on the DVLA database, so the poor thing probably didn't survive the ministrations of a succession of owners.
Tim H.
1986 4/4 VVTi Sport, 2002 LR Defender, 2022 Mini Cooper SE
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Joined: Aug 2013
Posts: 3,383 Likes: 14
Talk Morgan Addict
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Talk Morgan Addict
Joined: Aug 2013
Posts: 3,383 Likes: 14 |
Used them in workshops from back in the day when I was on the shop floor (that was a long time ago!). Marvellous solution that solved many expensive problems, stripped drain plugs in Mini/Maxi gearbox cases that the cost of change would have written off the cars were resolved with a Helicoils.
When the windscreen was changed on my 4/4 Sport the dealer found a stripped thread much as yours Richard but they either didn’t have or didn’t know or??? of Helicoils and the costs of the replacement casting was eye watering, well over £150 for the cost of a 50p Helicoil insert!!!
BR
Colin
BR Colin
Who used to be a Spanner Juggler
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Joined: Aug 2010
Posts: 5,466 Likes: 171
Charter Member
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Charter Member
Joined: Aug 2010
Posts: 5,466 Likes: 171 |
My summer job in 1976 and 1977 was at BIP (British Industrial Plastics) at Streetly where they made plastic moulding machines. Working in the stock control and buying office, I got to know a lot of the standard inventory. They used helicoils in various sizes on a regular basis. I never found out if they were for repairs or to strengthen threads in alloy castings.
Paul
Costock, UK
Plus Four 75th - Furka Rouge - Pip
Disco 5
Teddy - 17h1 Irish Draught cross
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Joined: Jul 2007
Posts: 27,817 Likes: 749
Member of the Inner Circle
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Member of the Inner Circle
Joined: Jul 2007
Posts: 27,817 Likes: 749 |
Repairs in alloy I would guess / hope. They are a great invention.
JohnV6
2022 CX Plus Four
2025 Renault Scenic Alpine etech "Yvette"
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Joined: Oct 2019
Posts: 5,588 Likes: 603
Charter Member
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Charter Member
Joined: Oct 2019
Posts: 5,588 Likes: 603 |
I replaced a thread in the windscreen bracket of mine too .... those bolts seem to attract gorillas ..... the casting is brass (to my surprise) ... so the helicoil will be a decent durability upgrade!.
K
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Joined: Aug 2013
Posts: 988 Likes: 14
Talk Morgan Regular
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Talk Morgan Regular
Joined: Aug 2013
Posts: 988 Likes: 14 |
I stripped one of mine, I was surprised how little force it took I so I decided to helicoil all 4!
Brian
Jersey and Spain
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Joined: Aug 2015
Posts: 1,616 Likes: 143
Talk Morgan Enthusiast
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Talk Morgan Enthusiast
Joined: Aug 2015
Posts: 1,616 Likes: 143 |
I insert helicoils in newly machined alloy/magnesium castings as a matter of course. Spent most of today machining up an Elektron backplate for my pre war racing motorcycle. I used 1/2 x 20 tpi helicoil for the brake anchor bolt holes. I also helicoiled a 205 GTI cylinder head in situ after ham-fisted rally mechanic had stripped the spark plug thread. I've the complete range apart from 1/4 UNC....which I lent to a well known Morganist from Unstone would you believe?  Arwyn
Last edited by Arwyn Williams; 27/06/21 06:23 PM.
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Joined: Jul 2007
Posts: 28,904 Likes: 352
Salty Sea Dog Member of the Inner Circle
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Salty Sea Dog Member of the Inner Circle
Joined: Jul 2007
Posts: 28,904 Likes: 352 |
Graham (G4FUJ)
Sold L44FOR 4/4 Giallo Fly
'11 MINI Countryman Cooper D All4
'90 LR 90 SW
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Joined: Jul 2019
Posts: 5,450 Likes: 471
Charter Member
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Charter Member
Joined: Jul 2019
Posts: 5,450 Likes: 471 |
I have used many helicoils over the years to repair stripped threads in cast steel. I was told by an aircraft engineer that Time-Sert was a better system, though I have never used them... Any thoughts/experience..?
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