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Stripped head steady threads

Posted: Wed Sep 11, 2019 10:37 am
by connieowner
hi all, the threads in the top of my cylinder heads (59 Connie) for the head steady brackets are toast...thinking of helicoiling them. My question is...would it be acceptable to use a metric helicoil insert as these are a lot easier and cheaper to purchase? Existing thread is 5-16 coarse I think, is there any benefit in installing a fine thread to help cope with vibration? Any tips/suggestions gratefully received. Richard

Re: Stripped head steady threads

Posted: Wed Sep 11, 2019 10:42 am
by Adrian
Ebay item 151015819298 might be of interest, I can't remember whether or not our hosts sell them.

A.

Re: Stripped head steady threads

Posted: Wed Sep 11, 2019 11:57 am
by connieowner
thanks Adrian. I will double check the thread size and order!

Re: Stripped head steady threads

Posted: Sat Sep 14, 2019 7:53 am
by PeteF
No reason no to use metric accept for authenticity.
It all depends what sort of stuff you normally work on - will you use the imperial again? Or more likely to use the metric?
It's also a lot cheaper to buy a set of the most common sizes - again, depends if they'll get used again.
If it really is a one-off could you not borrow one?