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Fixed it! This'll be the third try getting that post to work since you originally posted up your carnage pics.. :mad:

Well i couldnt post this on the first day because the site was messing up but:

Most obvious thing that pops out is that the area where the crack starts is a fairly thin V shape of metal:
58259...

I dont know how much time you are ok spending swapping transmissions out but if it were me i would probably be trying to build a tunable clutch release setup and then seeing if i EVER broke another...

Not sure if that option is present among all the different engine management in this thread. Are there self-contained units that reference wheel speed?

Hey JT who keeps track of all the 1/4 mile...

Good stuff!

Heh, yep, nice update but all i got was "no broken axles". :)

Well, if you got rid of 5th and were willing to do some work i can see making some tapered roller bearings work at that end of the trans too, or maybe a thrust roller bearing (torrington type thing)...

One of the things i mentioned to Brent at one point is that for a race car that doesn't NEED 5th gear, you could remove those gears and and add more bearings and another support plate to that area. I...

I think we're on the same page on a lot of the issues here, then.

I think dog boxes are kind of a straw man to be honest, given the cost and the number of unexplored options regarding the stock...

I have two cases that look like that.. and not from power. I should probably go look at his pics again but honestly these k-car manual transmissions are the most case-cracking prone transmissions i...

Well, i dont think anyone has exactly used the stock trans to its potential and found the limit either, and if enough people give up on it, we will never have to find out! Hooray!

Reeves'...

Oh man i remember that. I cringed for the whole video. :X

Im not saying it will go to ---- in X amount of time, im saying that X amount of time is a tiny fraction of what it would be in a 'normal' street car transmission if you drive both in a way that...

Yes, you either go back in time and drive them like we drove cars before synchronizers were invented, or you drive them hard and accept that they will need work on an almost CONSTANT basis compared...

LOL @ people who apparently think dog boxes should never need any work. It's not a whole lot different than taking the synchro rings out a standard box and leaving everything else the same.. It's...

Yeah screw all that! I think if you stick to 24.5s and maybe invest in a hydro clutch conversion with a tunable release like what's been talked about, then you can quit worrying about breaking stuff...

Well, i think the main thing is preventing load 'spikes', and to my thinking, if the 26s are easier to wrinkle and harder to spin, they are probably worse about that spike than a smaller slick. ...

Well i remember when ohiorob made a thread about 4t60s and i was trying to make the point that on the video of Stephane's old 8 sec Charger that it looked like he was leaving on ~5psi and clearly...

MY crazy baboon --- just pictured bolting an adjustable shock absorber to the clutch arm to control release speed. *brachiates away*

Are you using an equal-length axle setup or long pass side axle?

Torque steer? Might be a problem with 10-second car torque on slicks? Just a thought, not a strong belief yet. :)

The rest of the axle end is thicker as well so you'd need to machine everything it passes through to the larger size. Still may be a possibility.

I'm thinking the same thing as Moparman: If the 568 is holding the power with that thinner ring gear flange, seems like you could machine down the flange on the 850 diff to the same thickness, or...

The 2nd, less desirable option would be trying to swap the open-diff t850 side gears into a k-car diff carrier, or machining the stock diff carrier and re-splining the stock side gears to accept the...

^ Excellent! If the ring gear can be made to go onto the t850 diff carrier, the carrier itself is almost guaranteed to be workable in a 568 case.