Cracked transmission case!

[ASpec818]

After replacing the drain plug for a tranny fluid flush, it started leaking slowly. I thought I had stripped the internal threads of the drain hole because the screw would keep on spinning. I had it towed to a local shop for re-threading. However, they just notified me that my transmission case was cracked in 4 different places (front, rear, and sides). They recommended either getting a new case, or taking a chance and using the jb weld approach to sealing the cracks. How common is this? If I have to end up replacing the unit, do I have to get a whole new transmission or can I get just the case? How much is the case? The vehicle seemed to be driving fine before all this so I'm assuming the internals of the transmission should still be ok?

2000 Boxster S 6 speed manual 73k miles

Edited May 31, 2011 by ASpec818

[JFP in PA]

Transmission cases rarely fail, and are available as parts, but they are expensive. That said, “JB Weld” is not going to work, to fix your case, it needs to be disassembled and heliarc/TIG welded by a specialty welding shop that knows what they are doing……..

[Larry Nakamura]

I had the transmission case replaced on my 2001S for another

reason then cracking, and it was approx $850 at the dealer.

[N41EF]

I would look for a used tranny to replace it outright. I'd also replace the clutch, the rear main seal, and do the IMS upgrade all while you have the tranny out. Also, take a good look at your CV boots, I had three leaking at 60k miles.