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Discussion Starter #1
I've just been called by the garedge who serviced my car and they have informed me whoever done the last oil change has stripped the tread and patched it up with pft tape! I've read on here people have had them helicoilled and was wondering;

what size is the sump bolt? So I can I order the correct helicoil kit now.

Has anybody done it? I presume you just drain, re tap and fit?

Can it be done on the sump attached or do you need to drop the sump?

Any help would be gratefully recieved.

Cybermatty
 

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We helicoil them quite often,i wouldnt recomend you doing it on the car,there is a specific helicoiling kit for them ,but it will be cheaper for you to buy a used sump:)
 

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Discussion Starter #3
I thought kits went for about £30-£40? Looked on flee bay and a used sump seamed to be about £50+?

Cheers
 

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helicoil

i had the exact same problem
the garage rang and said the previous mechanic balls it up,
i actually think they themselves did it and passing the buck
any way it was helicoiled but now intermittently drips oil!!
need to get check at next oil change and maybe get washer or something
 

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I've done a helicoil whilst fitted to the car.
The most important thing is to make sure you tap it out square or you sump plugs washer won't seal properly.
I lent a kit off Paul Cannings uncle.
Doddle to do like.
Are you refering to the original bolt.....this, iirc, is re used, so it wouldn't matter.
 

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Discussion Starter #7
I need to know the size of the bolt to order the correct helicoil anybody knows a good place to order and how much I should expect to pay. Cheers for the good advice.
 

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For what it's worth it is a common problem. Any garage can find themselves with a stripped thread just by undoing the sump plug. Happened to Avanti when they did an oil change on the GTV - no problem and no blame - they charged £20 to fix which I was happy with.
 

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Kits seam to be about £70!! maybe a new sump would be a better plan. Anybody selling one?
Yes, because in a kit you will get half a dozen helicoils. Also, you need a 16.5mm drill bit. This is the size needed before you tap the thread. You won't usually get the drill included in kits of this thread size. A drill will cost about £20 & you need the reduced shank version as most hand held drill will only take 13mm max.
If you have an engineering shop or engine reconditioners near you then they may well sell you one helicoil & hire you the kit to install it. That will cost you about £20 - £30.
As for buy ing a second hand sump, Its a fair amount of work to fit and the thread in that is likely to be past its best.
All in all you are best off having a garage that has the kit do it for you. If they charge more than £35 they are robbing you, although you will have to pay for fresh oil too of course.
 

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Discussion Starter #13
Just spoke to my local alfa specialist Alfa shop in Norwich and they said Alfa do a special tapered plug than in 9 times of of 10 will fix this problem for the sum of £1.50! Anybody hears of these or know what they are like?

The way the guy described it its a self tapping and tapered bolt the will correct the tread as it goes. May not be a long term solution but as my current bill is over a grand I'm now trying to keep thing simple!
 

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Just spoke to my local alfa specialist Alfa shop in Norwich and they said Alfa do a special tapered plug than in 9 times of of 10 will fix this problem for the sum of £1.50! Anybody hears of these or know what they are like?

The way the guy described it its a self tapping and tapered bolt the will correct the tread as it goes. May not be a long term solution but as my current bill is over a grand I'm now trying to keep thing simple!
Its a no brainer for £1.50, give it a go ! Good luck:):):thumbs:
 

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In case it comes up again, when I had this happen many years ago on my 145, I bought the helicoil kit, had the work done, then sold on the kit - minus one helicoil - to another member on here for about £15 less than I paid. They then did the same. So several members had their problem fixed for a minimal outlay each.
 

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Discussion Starter #17
Yes it worked!

needed a little liquid metal to get a good seal but I've since done a oil change and it was fine! All of £1.50, what a bargain!!
 
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