axel ??? doing rear brakes

[rob in wmi]

im doing the rear brakes this weekend and went to az to see how much they were and they wanted to know wich axel i had the 35 or the 40 how can you tell

Rob

[AZ Jeff]

Only two brake sizes have every existed on XJ's. If you have a Dana 44, it will have 10" brakes as OEM. Everything else had 9" brakes.

I recommend, (to be certain), that you pop a wheel and measure the OD of the drum. A 9" drum will be about 9.5-9.75" across the outside. The 10" drum will be correspondingly larger.

[89xj]

what year? my 89 with dana 35 has 10 inch drums.i believe that the dana 35 from 1991 and up have 9 inch drums.

[rob in wmi]

i have an 87

[sidriptide]

the D44 shoes are 2.5" wide.. the D35 is 2".. heres a link to help identify your rear axle..
http://www.highriders.ca/documents/axle_spotter_guide.htm
mike

[Eagle]

Dang!

YOU'RE ALL WRONG! :D

Most of the early (pre-91) Dana 35s had 10" x 1.75" brakes, and the Dana 44 axles got 10" x 2.5" brakes, but I have been told by a usually reliable source that he once owned an XJ with a Dana 35 that came from the factory with 10" x 2.5" brakes.

Beginning in 1991, Chrysler changed everything over to 9" x 2.5"

[AZ Jeff]

Thank you, Eagle for clearing this up. I knew that 91's and on used the 9 inch brakes, but did not know that virtually everything before that used the 10 inch brakes.

[asatxj]

Ok then why did AZ ask me which size of 10" brakes (1.75" or 2.5")? I'm driving a 91 limited axle is a D35 open diff(shoot) I guess I'll just have to take them off and measure before I go shopping again. But it would be nice to know what the deal is.