328 clutch install problem. Please help

Have you got all the spacers behind the bearing in & the right way around? ISTR one of them was stepped.

 

Did you open up any other part of the transmission including the shift rod, the inspection ports, etc?

 

So, if you remove the ring nut, you can spin the input shaft freely without any interference? It only locks up after you put the nut in and try to torque it?

 

Then the interference is not inside the box. It is among the three drop gears, bearings, and the center shaft from the clutch disc. Go back, disassemble the drop gears down to the shaft, make sure that both shafts spin freely, then install the three gears one at a time to see where the interference is. It is kind of hard to tell you what to do over the internet without pictures ...

 

What about items 14 and 15 that Iain mentioned?

Ferrari 328 (1985) Parts : Table 24 - GEARBOX TRANSMISSION

 

glad you found it. That is always a good thing.

 

Been a looooong while since I've had a 308 bellhousing off (and not sure if 328 are the same), but my foggy recollection is that item 15 has to come off first, before the bellhousing can be removed (i.e., the hole in the bellhousing is larger in diameter than the input shaft but smaller than the OD of item 15) -- can you confirm/deny for a 328?

 

No Steve. They learned that lesson when they went to the QV and made the hole bigger than the stop ring so you can slide the bell housing off without having to remove the blasted ring.

 

I've found it to be rather random with that, my '80 mondial will remove without fiddling around in the dark, and two of the recent QV's required blind removal of the snap ring, though the 328 did not. go figure, I've never understood the Ferrari assembly line, my best guess is that simply came down to what was in reach before the next coffee & cigarette break.