Blew up another CV joint..., What to do? Options

[yarin]

So I need some advice on this one:

2 years ago a CV went on me during an autocross, drivers inside (tranny side). The bearing race cracked and well, u know what happens then, no power transmitted means flatbed tow truck home. Replaced all 4 CVs with the kit from PMB performance.

All was well.... fast forward to today, the exact same joint blew. I haven't dissasembled for a post mortem but it isn't pretty. Luckily i flat tow the car to events now so getting home wasn't a problem. The car definitely took a beating today, put about 45 total runs (autox school x 2 drivers) on the car before it let go on Avon Tech RA tires, a few areas of the course induced some slip/grip stress.

Motor is relatively stock, probably putting out about 100-110hp crank. AutoX definitely put exess wear and tear on the part, running semi-sticky tires.

So what should I do, replace with another kit? OEM? Beef it up with 944 or heavy duty CVs? Any of you fellow autoxers have a solution that won't cost me a fortune?

Thanks!

[davep]

Being a physicist, I can understand what Jeff is talking about. Hence my questions about suspension travel and hopping. It may be that Eric will have to offer two types of CV's. One for the street cars and another for the racers. I think an AXer will be harder on the CV vs the track guys.

Even a little slip and grab will be hard on the CV especially if the axle is at an angle. The Loebro may be well worth the extra $$ if it reduces the failure rate farther; say 4 years instead of 2 years use. More heat treatment or perhaps cryo treatment may also help extend life. Basically, the CV will always fail, it is a matter of time. It may be worth inspecting the cages for cracks on a regular basis, and replace them before they fail. I suspect the CV was failing (crack present) for a while before it broke.