If you really want to do this "right," short of doing it really right and
getting it welded, the JB weld route sounds good to me BUT if you can
manage it according to the shape of the place where the case is cracked,
you might feel more comfortable if you put a couple of steel straps across
the crack, and JB weld them in place as well. Whatever forces caused the
crack in the first place will still be there, and you may need something to
relieve the case of that load. I too believe in the mystical properties of
JB weld, but  don't know how well it holds up in tension, which a spreading
crack could cause. You might even put a couple of screws into the metal
bars and really forget about it.

I did this to a cracked block in a renault dauphine when I was a kid, and
the straps held the block closed just fine for longer than the rest of the
car continued to run. Geeze, I hate to admit I was involved in that!

Jim

On Mon, Nov 14, 2011 at 10:44 AM, mark drillock <mdrillock@cox.net> wrote:

> I have had a Syncro tranny welded before but a different section of the
> case. It seems like asking the welder would be the best thing. Myself I
> would be inclined to try to glue it first. Just drain the tranny
> completely, then jack up the DS to tip any remaining oil away from the
> crack. Clean, wait, clean, wait, clean, etc until I was sure the oil was
> not still seeping from the crack. Then scuff the crack area with
> sandpaper. There is some 5 minute JB weld that I have used a few times
> and it sets up quick.
>
> Mark
>
>
>
>
> miguel pacheco wrote:
>
>> Still trying to find out if this transmission case is anything exotic. I
>> understand it is made of cast aluminum alloy and there is a known, good
>> aluminum welder here in Guerrero Negro. Question is, can it be welded
>> using  standard aluminum welding techniques or should I just empty the
>> case, apply JB Weld and refill?
>> Miguel
>>
>>