Lets talk about these XK's? - Jeep Commander Forums: Jeep Commander Forum
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post #1 of 20 (permalink) Old 09-19-2012, 04:24 PM Thread Starter
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Lets talk about these XK's?

I got my build sheet. What is a 300mm rear axle (200mm front)? My JK has a Dana 44, lots of info on that out there. I try to search for the XK rear axle and there isn't much info out there.

Is it any good?

3.73 ratio isn't too bad.

Looks like I have QT-II, which should be just great for my needs though QD-II would have been nice.

How is the transmission cooler on these (I do have the tow package)? I know on my JK the cooler wasn't too good and it was wise to add a bigger one. Is that needed here, I do tow about 3500lbs once a month or so?
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post #2 of 20 (permalink) Old 09-19-2012, 04:43 PM
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You can tow 3500 lbs with no problem. Your Commander is rated to tow twice that amount.

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post #3 of 20 (permalink) Old 09-19-2012, 05:01 PM
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Your build sheet says you have a 300mm rear axle ?

2006 Steel Blue 5.7L HEMI Limited 4x4 Build Date: June 9, 2006 Hour 14
Interior: Dark Slate/Light Graystone with Saddle Brown Leather Seats
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Magnaflow cat-back exhaust, Daytime Running Lights enabled, 2" Rough Country Lift with 265/70R17 Goodyear Wrangler AT/S
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post #4 of 20 (permalink) Old 09-19-2012, 11:15 PM Thread Starter
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It says 200mm front and 300mm rear axle. I can't find any Google reference to it. What rear end is normal?
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post #5 of 20 (permalink) Old 09-19-2012, 11:19 PM Thread Starter
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DJAS 200MM Front Axle DMES 3.73 Rear Axle Ratio DRSS 300MM Rear Axle DS7S Conventional Differential Frt Axle DS8S Conventional Differential Rear Axle

Here is the text from the build sheet. Does this mean anything to anyone? What are these axles/differentials.
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post #6 of 20 (permalink) Old 09-19-2012, 11:27 PM Thread Starter
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So, I found some reference to the 300mm and it is used on the grand Cherokee that doesn't have a solid rear axle. So, my build sheet is messed up.

What axle do I most likely have? It has 10 bolts.
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post #7 of 20 (permalink) Old 09-20-2012, 09:39 AM
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We share the same chasis as the GC, exact same. We have the chrysler 8.25 rear axle. You have QTII so you have a 10bolt diff, where as on mine QDII I have a 12 bolt to accomodate the actuator inside the diff to lock it. We all have the same axle

2006 Jeep Green/Saddle Brown Leather HEMI QDII OME HD w/Fox Emulsion 2.0 Rear Shocks SpiderTraxx 1.5" 265/70R17 Goodyear MTRs w/Kevlar Ture Duals w/Imco 50 k&n 63 CAI Full Mopar Skids Tow Package
Tow Hooks SteelArmadillo Belly Skid Diablo 91 Tuned
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post #8 of 20 (permalink) Old 09-20-2012, 12:51 PM Thread Starter
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I know the 8.25 is pretty decent axle, my cherokee had one but I guess I am a little surprised it is stout enough for the hemi. It must be tougher than I thought, although most XK's don't have really big tires. From what I know about the 8.25 its good up through 35's and most running 37's are okay.

I am really impressed with how smooth yet rugged the XK is.
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post #9 of 20 (permalink) Old 09-20-2012, 01:32 PM
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Unless you have a superlift you cant run larger than 32s and then 34s maybe 35s would fit.. Im not sure how the 8.25 works with larger tires, but does great with me 31.5s. You wont believe how capable these xks are. If you plan on wheeling at all get a lift and aggressive tires and hang on!!!

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Tow Hooks SteelArmadillo Belly Skid Diablo 91 Tuned
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post #10 of 20 (permalink) Old 09-20-2012, 02:42 PM Thread Starter
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I won't be wheeling too hard, at least not right now. I have a nice 4dr wrangler for that. I have just been wanting to get rid of my old ram truck but still have something to pull the trailer and fit all the kids. We will do some exploring when we go camping so it will see some dirt roads and minor offroading but the rockcrawling will be reserved for the JK.

Just got to get this XK figured out, there are more buttons on the steering wheel than in my entire JK.
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