Rear shock mount thread stripped .

[Nodohc?]

Hi all , stripped my recent project GT 250a down to bare frame , only problem I can see with it is the top mount for the rear shock is Stripped beyond repair , nut was held on with what looks like exhaust putty
Had a close look and it looks like the threaded part could be a stud screwed inside the bare mounting part , I'm hoping thats the case
Does anyone know for sure ?
If not what's the best repair
Thanks

[jabcb]

They may have used JB Weld or something similar to attach the nut.

For an issue like this where my attempted repair might make things even worse, I take it to a vintage/older bike shop. If they have been around for some years, they will have done this type of fix before.

A shop could clean off all bad material, add material & cut new threads. After it’s fixed, I would use a torque wrench to tighten the shock nuts.

[Nodohc?]

Thanks jabcb
I've been thinking of putting a helicoil in the acorn nut and re tapping the thread to suit , nothing to lose really and metric thread is courser than the finer original so it could work .
What do you think ?
If that fails it's probably an engineering shop for your suggestion , not many old bike workshops in Ireland

[jabcb]

I don’t know.

Worth considering new shocks at the same time. That way you won’t need to remove the nut in a few years to replace the shocks.

[Nodohc?]

Good idea
Thanks