Modern Vespa

So I'm looking at buying a three port 8" engine to build for my VBB.
How much is a complete engine worth?

to my knowledge nothing 8" ever came with 3 ports. maybe a really really late super?

so you'd be looking at sprint, etc and P125/150 as well as LML and converting them.

with engines, condition is everything. the more complete the more dinero. figure something rebuildable is probably 300~500 pretty easy and it just goes up from there.

Yes the 2nd generation supers were 3 port as I recall. So, any vbc after ~76.

Always learning.. thanks guys

Birdie's got it

I have a 75 Super with three ports. Interestingly, it also has the P type needle roller bearing on the crank as well.

Cool. So 3 port after sometime in 1975.

that seems to track. it also coincides with the whole kinda sorta starting to move toward P style internal case differences-- the fly side axle bearing, provisions in the case for the main seal on the crank side and not the clutch side of the bearing.

I know on the 74 cases (or at least the ones I've seen) there's the meat for the port, but it's not cut.

I had a 74 that I was able to add a shallow third port to. there was plenty of metal still left, but I did not to break thru and have to resort to filling and recutting.

I can't recall what my 75 case has on the clutch side. It's been sitting in the naughty corner for some years, waiting to have the flyside bearing area welded and re-machined. It ended up oval, which took a few new bearings to realise.

My 76 VBC has a 3 port case but came with a two port cylinder.

I am running a Pinasco 177 3 port cylinder kit.

Couple of old cases that came with my VBB

VBB1T case (left) and VBC case. Both 2 port. The VBC case has 2 pins for the rear brake shoes. The inlet has has the factory keyhole cut on the inlet. VBB case does not. I think it was the original engine.

VBC2 had 3 ports, and probably something like an Indo P150S would have had a mysterious motor.

Dunno what it's worth.

Otherwise you could use a VBC1 & add a bitta-phat then grind in a 3rd port.

Well I'm now in possession of a complete Super engine and fork for $140. Plus the $100 in gas and six hours in the car. Photos forthcoming once things are cleaner