Rear end break in?

[bigtex]

I never did any break in and ran redline 140-250w. In tens years of racing I never had a rear go out on me. I would rebuilt it at the end of every season.

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[arqangel67]

I've always wondered about break in procedure on axles considering I never broke in the axle in my truck when I bought it new. But I guess an oz. of prevention is worth a lb. of cure. Can anybody tell me whether they use synthetic with a locker?

[arqangel67]

I called Eaton and they said it didn't matter what type of fluid is used synthetic or conventional, So that answers that.

[Sato Bros. Racing]

Currie recommends a good high quality NON SYNTHECTIC 85/140 gear oil for break in, they recommend and sell Torco. The worst thing you can do on a new 9" gear set is hop in and drive the truck like you stole. You want to be "easy" on the gear set. Drive the truck for about 15-20 minutes, then let it cool down. Do this process a couple of times and the gear set should be good to go. Currie uses Motive Gear

[glamiskid395]

I'm not really sure. I'm not sure who currie uses or if they use multiple suppliers for gears.




I don't want to get too off topic, but to anyone who knows they're stuff when it comes to ring and pinions, should burrs form on a hardened ring gear like this? To me they shouldn't burr if they are hardened properly. Otherwise what would cause this to happen?.......

I just had a set do this to me, less then 300 miles. The set before had nearly 2000 miles and still looked better than these. I don't think mine were hardened right.

[TRXSonoma]

I just had a set do this to me, less then 300 miles. The set before had nearly 2000 miles and still looked better than these. I don't think mine were hardened right.

Who set the gears up? Did they fix them for you?

[glamiskid395]

Who set the gears up? Did they fix them for you?

We are shipping the 3rd member back to see if they will warranty the gears.