Lambretta rear shock absorber stud replacement.

[Warkton Tornado No.1]

The takeaway to me is if you want a big block you need to buy a big block but I don't see why there would be any problems with doing a case conversion if it is done correctly.


Some people do really well at it

https://www.mbscooters.co.uk/info/mb-*- ... n+260.html


I've had lots of cases welded and repaired locally and so far no issues. These cases are old/dirty aluminum and there will be porosity issues if they are not prepared right.

I'm pleased that you have not experienced the issues that some of us have endured

However, I doubt that in the Post (see above) that details the problems with welding that "they are not prepared right" or that the coded welders I have had repair cases would take too kindly were it suggested they had skimped on thorough preparation

The fact is that having fell foul of the presumption that welding may be the best way, I wanted to make the OP aware that alternatives may work as well, if not better. In the example of a front hub that had been welded, there was no visual sign that the bore for the bearing was in effect getting bigger. The rear suspension pin in the crankcase strikes me as being in a very similar scenario, transmitting all road shocks to the suspension, it is the first in line for that specific task......