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Gribbs 09-07-2012 06:31 PM

When did they change the diff ratios?
I have been told that my vehicle cannot have the 4wd service fix applied until a new diff is put in. This is because mine is an early build (may 2011) apparently. Can any one provide any info on when they changed the diff ratio and why?

savvas 09-08-2012 03:57 PM

Re: When did they change the diff ratios?
Hi Gribbs ... what is your diff ratio?

Mine is a Feb 2012 build and has a 3.45 final drive (DLKP), 230mm rear diff (DR1P), and 195mm front diff (DJCS / DS7S). Do you have the build sheet for yours to compare?

It might be that the early models had the 3.47 final drive 225mm iron diffs, and they later introduced the newer 3.45 230mm aluminium diffs.

The different diffs are here ...

Jeep_addicted 09-08-2012 04:24 PM

Re: When did they change the diff ratios?
According to the build sheets

our 2011 has the iron diffs with a different ratio front to back

Our 2012 has the 230mm aluminum diffs with the same ratio front to back.

Both have QT1.

ColdCase 09-08-2012 05:36 PM

Re: When did they change the diff ratios?
Gribbs, by early build did you mean May 2010 instead of 2011, and do you have a V6 or V8? I though all V6s have the 215 iron rear diffs? My April 2011 build is aluminum but ESLD diffs have always been aluminum I think.

Gribbs 09-09-2012 05:42 AM

No, 2011 is correct.

Gribbs 09-09-2012 05:43 AM

Sorry, also a diesel

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