Modern Vespa

Exhaust bolt hole repair on a 1964 Allstate. The original had broken off in the case and someone decided to drill beside and install a new one; it was NOT perpenducular to the case either. Kinda laughed when I was removing it and the bolt was coming out at an angle.

The material was removed, then TIG welded up and machined. All good now.

Nice work !

I'm glad to see there are people in the world that still have the patience to do the job properly. Good man.

very nice clean work. wish I lived closer to ya! I'd be bothering you all the time for all kinds of nonsense work!

Did the same thing to my VBC.. Fill, drill and re-thread

Stock exhaust?

Box exhaust?
Thinking out loud here:
How about add meat to the other end and drill through -- P style swingarm.
Take advantage of the dancing nut and not rely on aluminum threads.

To avoid stripping - with repeated replacement - and to aid installation - I replaced the bolt on older sprint type cases with a stud.

Used a hardened steel.
Should have used Jonathan's anti seize!

Stud remains in place.
Allows me to "hang" exhaust when installing and then tighten nut with no tension on the exhaust.
Has worked well for me.

Why? why not do it right?

There is no problem with a threaded exhaust bolt receiver in a case. There is a problem with any receiver that is is subject to moisture for long periods of time and NOT greased. long bolt in the case is a great example. . . which i have had to remove for users on this board; a little anti-seize grease is perfect in this situation.

For a box exhaust the long bolt system of the P's is way more robust, and a better various-kit-spacer-stub-landing stress reliever.

Get a set of P cases; done.

In all my time of riding with box exhausts on early LF and WB engines, i have never had a fail at the bracket. I have had the exhaust fail in other areas. The irony here would be i had a BGM Big Box V1.0 bracket fail on my P200E. The spot welds on the entire bracket broke. I'm certainly not out there telling people to do away with the P/PX type of mounting system, that would be ridiculous.