I think there is normally about 1 inche of play. It should never bottom out. The sliding part of the yoke is about 3 inches long.

Let's review:
1. B310, remove auto transmission
2. Fit standard trans from a B210 into B310
3. The B210 tailshaft had larger flange at rear than B310 diff -- maybe to fit the 120Y-only B/W diff? In any case, a different or modified shaft is called for.

*The 56 and 60 transmissions are the same length (as far as we've seen)

*The automatic and standard B310s use the same differential (H150).

Premise: a standard B310 standard trans tailshaft should complete the swap.

You found a shaft at the wreckers that was already out of the car. But it was marked "Sunny". So it should be from a B310.

It all sounds right. But it doesn't quite fit. I would go back and find one from the back flange face to the "stopper" part of the front, and get one a that's a bit shorter.

It should be 49 inches. How long is the one you have (from back flange face to face of "stopper")?

By the way, it's not really a "stopper" -- it's never supposed to go in that far. The cup on the end of the trans is a "dust cover" according to my B310 factory manual. This design just helps keep most road dust from getting up to the seal.

Thanks for the reply.

Okay well today what we deduced that it is indeed too long (and there's nothing we can do otherwise) so we are sending the shaft away to get shortened.

My question now is, would it actually be possible in this case to cut off some of the oil seal dust cover to allow the shaft to slide in more? That or cut off the "stopper" possibly?

Thanks again.

i'd try removing the 'stopper'.i've done this before,as there is two sizes of rear seal available here in australia,& it's easier to just get rid of this piece.it should allow the tailshaft to slide in far enough to fit.it's only pressed on to the front yoke,so just tap it off with a drift.

Thanks to all who helped! The car is finished and on the road again :)

B310gx and ddgonzal were on the money, the "stopper" was getting in the way. I took to it with a large hammer and drift and it came apart nicely. I then slid the tailshaft in and it cleared by the 15mm minimum we needed! I was so happy, we tested it with a full load of passengers and me jumping on the tow bar and it barely moved. We had no cover for the gear knob and I watched it while we drove and it didn't scrape either so it works!

The car is fantastic fun to drive. I'm a Toyota enthusiast myself but I must say that I have grown quite fond of this car. The comparison of worn engine automatic to renewed engine manual is enormous.

Thanks again to all for their help.