[cody]

Originally Posted by sybir

Totally agreed. Most trannies we end up replacing are due to serious abuse (that's kids with too little power trying to clutch-drop, people trying to powershift without knowing how, way too much power in lower gears).
We've had exactly 2 transmissions that I can think of that failed on a normally driven, mildly modified car, and it was on the same car; he blew the tranny up bad. We replaced the tranny with one out of a drivetrain swap we had, he drove it for ~200 miles and it blew up again; the rear diff was tweaked somehow and abusing the output shaft and center diff. We replaced the tranny and rear end, no more problems.


On an unrelated note, we had a guy come in and request an Exedy multiplate (read, way more agressive than a hyper single) in his otherwise stock STi. We told him it was way too stiff, he wouldn't listen. Gave him the car back Tuesday, he went out and was doing 6k clutch drops with DCCD locked to rear, and "broke something."
Towed it in, and it had snapped one of the rear axles clean in half.

In half.

Tranny was perfectly fine, rear end was perfectly fine.

That's a strong damn transmission.

Yep, the STI tranny is capable of holding 450whp + abuse. I've never heard of a failure. The axels to break from abuse, as you pointed out, though. I wish this was true of WRX's...much cheaper repairs.