Modern Vespa

All you engine gurus...mate gave me a c/case it's been left outside for donkeys yrs cleaned out all the corrosion has some small pits in there in crankcase will this c/c still work and will i have running issues or do i just bin it??
cheers for ur help

Pic 2

I would just polish it up lightly (no mirror sheen needed) and put new bearings, seals in it. Would probably replace the crank/con-rod or at least the bearings.

after eyeing that intake port a bit I might go full circle crank and reed valve manifold with it. Can only mean more performance if that's your desire.

This would be horrible overkill.

Put in a new crank and you'll be fine.

Huh? Why?

OP, I recommend getting the cases media blasted with glass. Then build it up as a rotary engine. It will work just fine for you.

So I spent another hour or so detailing it again turned out ok. my engine guy skoped it and gave it the green light
So thanks for all ur input guys.
Cheers

Glad to know they will be usable!

I'm not a fan of glass beaded cases for one reason: They end up looking glass beaded. Some like that look, but if you do it on permanent mold alloy parts, they end up looking sand cast. An alternative I've used (professionally) is acid based aluminum brightener. The harsh stuff that you can't breathe, and says to rinse within seconds. You need to protect the bronze parts, though, and that can sometimes be tricky. Duct tape will work.