today me and a friend who used to be a mechanic started the auto to 5 speed conversion and while checking we had everything we needed he noticed that the uni joints were busted on the driveshaft and he told me that they arnt replacable for some reason, but i thought that you can get new uni joints on all vehicals, so i was wondering if anyone new anything on the subject, any comments appreciated

your right mate, i had this problem about a month ago. they are not replaceable. i just got a brand new tail shaft made up. was the easiest option. do a search and you will find a fair bit on this topic

how much did the tail shaft cost you?

Hay I am keen to know as well, Whats a custom shaft worth as I am gonne need one for my CA18 conversion.

from memory it was between 400-500. was a 3inch setup up with new performance replaceable unis.

Some 1200s have tailshafts with replaceable u-joints, others have non-replaceable.

A great shop will be able to change the "non-replaceable" ones with new ones, however most will be happy to sell you a new tailshaft.

Or try the wreckers. Early (71-73) utes will take a B110 or A12 B210 manual sedan/coupe/wagon shaft. Later utes will take a ute shaft, though B310 shafts may fit.

Hmmm, B10's have replaceable uni joints & these driveshafts may well be useable in 1200's.
These joints are fairly small & probably wouldn't hold up behind a CA18DET for long, but should be good behind a street A series engine. Using the B10 oil seal at the rear of the gearbox would be good too.

I have a driveshaft from a late B310 Wagon [WPB310, 60 series box, H150 diff] & it looks to be within a millimeter or two of being identical in length to my B10 shaft. These use larger uni joints & a bolt pattern that matches the larger H150/ H165 pinion flange.
A driveshaft company in Woolongong had converted mine to replaceabe joints while it was still in use with the previous owner, so it can be done.

thanks lads, i guess im in search of a new b210 manual tailshaft, and also need a set of b210 clutch and brake peddles with peddle box and then im off in 5th gear down the highway, if anyone has these things spare and are around lower new south whales, pm me, i might be able to take em of your hands at a reasonable price

Once again dodgeman, you are a wealth of knowledge. Thanks for that info. It might save me someday.

When I skim over responses in these threads, I always make sure I carefully read everything you say! Thanks again!

If you look for a B210 shaft, for use in a 1200, note that there are several B210 shafts:

1. For H145 diff
2. For H150 diff
3. For Borg Warner diff (in Australia)

So take the auto shaft you have and make sure the replacement shaft "back end" matches.