[tgrt]

I dropped off my JK this morning to have the gears upgraded to 5.13s. I'm pretty happy it's finally happening, but I'm a little apprehensive considering everything that can go wrong with gears.

I've read a few different methods for gear break-in over the last few months. Anyone want to share any wisdom on the matter?

 

[tgrt]

:lol: I knew that was coming! I ordered them on April 16. They were on backorder then (at least one set, the rears were). David at Northridge went searching when it became clear that no information was forthcoming. Luckily he was able to find a few sets -- I'm pretty sure he took a loss on the deal. I finally got them around June 15.

 

[tgrt]

I think that is the simplist method I've heard so far.

 

[tgrt]

On a new vehicle, there is no recommended gear break in. That is the biggest argument against gear break in.

I was wondering the same thing. But, at the cost of gears and the installation I'm not willing to take the chance.

 

[tgrt]

How can I get in touch with Dave at Northridge??? I want to order gears. Is he a member here?

Yup, he's at SEMA. However, you can order from the website and get a discount for the trouble of them not being there (use coupon code SEMA5).

 

[tgrt]

Gear break in and brake break in are similar concepts.

Yes, they work right out of the box from the factory...but, when you CHANGE to a slightly different set up (Different ratios, different shoes or pads, etc....) they WILL mate a bit differently....

Thanks for the information. That's one of the best explanations I've received on it.

 

[tgrt]

Won't this mess up the lockers? I know Jeep recommends synthetic fluid with a friction additive in the diffs.

No. Differentials with the limited slip differentials require an additive to the oil, but the gear oil does not need to be synthetic. The differentials with lockers do not need any additive.