Stripped spark plug hole

Saloon

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what is the best way to fix this without taking the head off. Looks lime the previous owner just put locktite on it.
 

JimboV8

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If it’s already stripped you could try a helicoil.
 

Saloon

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I'm sorry I didn't give all the info. It is a 3.8 liter from a 1960 Mark IX.
 

j777stp

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you used to be able to buy specific helicoil kits. I would imagine someone with more knowledge of the 3.8 would point you in the right direction.
 

piman

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Hello Saloon,

yes it is a job that can be done with a helicoil or similar kit.
As the kit for that size is possibly more than it costs to get an engine reconditioner to do, you may wish to check that?.
If the tap is greased this should minimise any problems with swarf entering the cylinder.

Alec
 

Mike_Hammond

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Hello Saloon,

yes it is a job that can be done with a helicoil or similar kit.
As the kit for that size is possibly more than it costs to get an engine reconditioner to do, you may wish to check that?.
If the tap is greased this should minimise any problems with swarf entering the cylinder.

Alec
You could try a small vacuum nozzle while tapping but either way if you did chance it, I would be putting a boroscope down to check afterwards.

Personally I wouldnt risk it, one metal chip has the potential to ruin a set of rings and score the bore. The price of head gaskets is small in comparison.
 
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