How long should axles last on a track only car running on R6's?

 

until they break or i change them every 30 track days. nothing official, but that's aobut one year for me. i just do it as a once over.

 

Thanks Mooty. Had mine for several years and they are starting to leak grease. Just confirming that it's time.

 

Is it true that the Turbo axle will fit and is stronger? (and possibly cheaper?)

 

Don't know if these fit GT3, but price is not a lot more than stock:

http://www.driveshaftshop.com/import...1-2004-996-gt2

 

CVJ axles does a rebuild and race prep option for the OEM axles that pretty reasonable considering the cost of a new OEM unit.

One local friend and rennlister is getting ready to ship his off to them soon. Since my car is apart for freshening this winter I'm strongly considering doing this myself as well.

 

Interesting idea. I will keep my old ones instead of throwing out. Maybe rebuild those and keep as spare.

 

In my opinion, the axles are not that much of a concern (from a safety standpoint anyway). If you break an axle it won't cause you to loose control of the car. I had over 100 track hours on my axles without any issues and that is on a car cranking out 600hp. I would be much more concerned with hubs or lower control arms. I broke a rear hub recently in a high G right hand turn which then destroyed the axle, brake rotors, and upright in the process. I changed everything which includes both uprights, bearings, axles, thrust arms, toe arms, LCAs, and hubs. I went with 997 hubs that are redesigned and thicker. I also changed out the LCAs to the much beefier PMNA RSR units as a local 6GT3 recently lost a rear OEM LCA (outer ball joint snapped) and it did some major carnage to the car. That was a wake up call. I changed the toe arms to the Cup PMNA arms with the pinch bolts. People don't realize how much stress is put on all the suspension components and they will fail eventually. Not a question of if, but rather of when...

[url=https://flic.kr/p/oBB2Px]

 

That's more than a bit scary

 

+1 to Powdrhound,
and axles should last a LONG time as long as you shift smoothly/don't shock-load the driveline...CUP/RSR/etc. go through axles because the shock-loads are insane...like a drag car.

 

Axles don't always break where you expect them to. This happened to me last year and caused the ABS to freak out due to a wobbly wheel, which caused me to flat spot the tires and go off.

 

have never seen one break vertically in the middle of the splines, yikes!
maybe a manufacturer flaw or over/under-torque?

 

Part of why the Cups break them has nothing to do with shock loads. It has to do with ride height and axle angle. Rarely do street GT3s used on track see the same aggressive setup used on them.

 

Can you elaborate further on that? Are the CV at an angle that is causing them to bind? What angle are they at?

 

This is an old thread - but I was told by Orbit racing that ~9deg off the horizontal for the axel is max on the CV joints before excessive wear sets in

Ray