A spark plug has popped out of the cylinder head. The car is a 2002 mini cooper. It's stripped the top part of the thread off the head. I've looked up on line and there seems to be a couple of options:
use something called a heliocoil to rethread it
get a new head.
I have seen a cylinder head on e bay for £30 (upgrade to s works so not needed).
Which is better? heliocoil or put on a new head?
Is it a really expensive job to get a new head fitted?
Also the part number on my cylinder head is almost the same as the one on e bay except for the very last letter; mine ends with an A, the one on e bay ends with a C. Is this significant? What does it mean?
I am very, very wary of garages etc as when this happened my wife and I were a 115 miles from home (after visiting our daughter in hospital). Got the car recovered to a tyre/exhaust place and they told me what happened (plug popped out) they said they'd put new HT leads on and fit a new set of plugs. It got us home after a very stressful 2 days. Just looked under bonnet and NO new HT leads - gits!! The place is ETS tyres in Newark, Notts.
Can anyone help with above questions?
Fitting a new head is a fairly expensive job (same cost as fitting a new head gasket) as there is quite a bit of time and labour involved removing parts and replacing. If the helicoil can be done 'in-situ' it should be far cheaper and if done properly should be as good as an original plug thread. Get some quotes/guarantees for both and compare. As a temporary solution the plug could perhaps be fitted using a suitable high temperature 'Loctite' thread locking adhesive if there are still some good threads left but the high compression forces will probably eventually pop it out again.......
Thanks for the replys.
I found a local garage that were able to rethread it using a 'Time - sert'.
I called round a few garages and all said that the head would have to come off to rethread it. Consequently the price doubled. Prices ranged from £400 to £800.
However, the garage (J. Millen and Sons, Witney, Oxon) used the Time - sert to rethread it WITHOUT taking the head off. Brilliant!: Cost £195.
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