Damage to skirt

georges126 · Oct 9, 2023

I am looking for some advice regarding the damage to the skirt, and how to precede.
These are from a MK2a , +20 barrel.
From the photos you can see that the chip missing is about 18mm long with a depth of 2mm. What options do I have?
I have a good machine shop locally but they don't have any experience with Nortons.

baz · Oct 9, 2023

georges126 said:
I am looking for some advice regarding the damage to the skirt, and how to precede.
These are from a MK2a , +20 barrel.
From the photos you can see that the chip missing is about 18mm long with a depth of 2mm. What options do I have?
I have a good machine shop locally but they don't have any experience with Nortons.

Personally I'd radius and polish it with a Dremel or similar
What you don't want is any sharp points for a crack to start from
Others may have a different opinion

Fast Eddie · Oct 9, 2023

Wot Baz says, carefully check for cracks, if good, smooth it out, blend into the chamfer, and carry on.

And try not to drop it again !!

Torontonian · Oct 9, 2023

I'd ignore it , seeing as the bore looks real good .
More importantly , where is the chip of cast metal now ?

baz · Oct 9, 2023

Torontonian said:
I'd ignore it , seeing as the bore looks real good .
More importantly , where is the chip of cast metal now ?

The only thing with ignoring it or leaving as is ,it's got several starting points along that chip for a crack

concours · Oct 10, 2023

I agree, still servicable. But, slide a piston in, use a feeler gage to confirm it's not got a localized deformation. In other words, right around the chip, could be dented in slightly.
If it did, polish with emery to re-establish clearance.
Quick & easy, no need to be overly concerned.

georges126 · Oct 10, 2023

Thanks for the advice guys. Onward and upward.

Damage to skirt

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