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Topic Review (Newest First)
06-18-2013 01:03 PM
paullgj
Chevy and JK

Quote:
Originally Posted by TMO84 View Post
Looking to buy a JK unlimited sport and trade in my 2007 chevy colorado with Z71.

As I'm comparing the specs, I see that my truck not only has better ground clearance (9.0 v. 8.7) but has a locking differential (while the jeep unlimited sport model does not). Am I buying a vehicle that is inferior to the Z71 offroad package? What makes the JK unlimited superior to my 4x4 truck (aside from engine power).
I own both a 2004 Chevy Silverado 1500 SWB and a 2011 Jeep JK. The Chevy has a locker and the Jeep open axles. There is absolutely no way the Chevy can keep up with my Jeep in a demanding off road situation. The Chevy is good for going fast on dirt roads - the Jeep excels at slow speed rock crawling on rutted mountain trails. The Chevy independent axle with the spinning CV driveshafts is a very weak link. The JK, even in the standard Sport form that I have, excels at articulation (wheel travel) of which the Chevy has very little. Now, if a I want to haul a bunch of stuff to a campsite - then I use the Chevy. The two can not me compared - different tools for different tasks.
06-18-2013 12:56 PM
live_slow
Quote:
Originally Posted by TMO84 View Post
Looking to buy a JK unlimited sport and trade in my 2007 chevy colorado with Z71.

As I'm comparing the specs, I see that my truck not only has better ground clearance (9.0 v. 8.7) but has a locking differential (while the jeep unlimited sport model does not). Am I buying a vehicle that is inferior to the Z71 offroad package? What makes the JK unlimited superior to my 4x4 truck (aside from engine power).
I don't know if anyone has asked, but we would need to know what you consider to be "off road".

Lots of folks need a truck to haul or tow stuff but opt for packages like z71 for the rare encounter with a muddy section of dirt road or having to drive on snow before the plows get out or whatever.

That same set of folks (lots in my family) do need to drive down a maintained dirt or gravel road to check on property, get to the hunt camp, get to the fish camp or similar, and they tend to haul lots of stuff in the bed or pull a boat.

Nothing wrong with keeping the truck for stuff like that.

The rest of the techinical stuff has been pointed out or will be. But you have to be the judge for what you want to do with the truck. If it can do it, keep it.
06-18-2013 12:24 PM
jkjeeper06 The 3.6 even has more power than Colorado. I was between these 2 vehicles when I bought my jeep. When it came down to it, the Colorado just isn't very good off road compared to the jeep. The turning radius on tight trails is bad on the Colorado whereas you can thread a jeep pretty easy on tight trails
06-18-2013 12:08 PM
derf
Quote:
Originally Posted by msubrave View Post
He's in a colorado, not silverado... he probably has an inline 5 cylinder.
I missed that. Then there's no reason at all to stick with one of those over a JKU.
06-18-2013 11:14 AM
tabber02
Quote:
Originally Posted by WatchThis! View Post
I am thinking that if someone has to ask a question like this does it really matter which one is best offroad? People who need the best tend to know why they need it therefore they have a good idea what is better.
06-18-2013 11:05 AM
Ponderosa The clearance you mention is with 16 inch tires. Does anyone actually buy one with 16 inch tires. The Sahara has more ground clearance than the Rubicon (yes, it is true) which, going by that metric alone, makes it the more capable off roader.

Anyway, once you have driven a Jeep off road, your questions will be answered. The Jeep will eat the Z71s lunch when the rubber leaves the road.
06-18-2013 10:52 AM
msubrave
Quote:
Originally Posted by derf View Post
Ground clearance is only one part of the equation. There's approach angle, departure angle, breakover angle, track width, wheelbase, suspension travel, etc.

You ask what makes the JKU superior to your truck but you don't ask in what way is it superior. What is most important to you? If you want to go trail riding or rock crawling, the JKU will far out do that truck. The suspension will better keep the wheels in contact with the ground (meaning you don't have to fall back on the locker), the better angles (approach, departure and breakover) mean that you won't be dragging your nose, tail or belly over everything. The smaller size will let you fit where the truck just can't go.

Now, for mudding, there's not much you need beyond 4 wheels being driven at the same time. Anyone can spin tires in a mud pit.

If the locker is such a big hangup, realize it's possible to take the exact same kind of Eaton electric locker that you find in the truck and install one in the rear (and front) axle of the Jeep. And when you do that there's basically nothing about that truck that can touch the Jeep as far as off road capability goes. You can even swap a Hemi V8 into a Jeep pretty easily to match the horsepower and torque of the truck if you want.

He's in a colorado, not silverado... he probably has an inline 5 cylinder.
06-18-2013 10:24 AM
derf Ground clearance is only one part of the equation. There's approach angle, departure angle, breakover angle, track width, wheelbase, suspension travel, etc.

You ask what makes the JKU superior to your truck but you don't ask in what way is it superior. What is most important to you? If you want to go trail riding or rock crawling, the JKU will far out do that truck. The suspension will better keep the wheels in contact with the ground (meaning you don't have to fall back on the locker), the better angles (approach, departure and breakover) mean that you won't be dragging your nose, tail or belly over everything. The smaller size will let you fit where the truck just can't go.

Now, for mudding, there's not much you need beyond 4 wheels being driven at the same time. Anyone can spin tires in a mud pit.

If the locker is such a big hangup, realize it's possible to take the exact same kind of Eaton electric locker that you find in the truck and install one in the rear (and front) axle of the Jeep. And when you do that there's basically nothing about that truck that can touch the Jeep as far as off road capability goes. You can even swap a Hemi V8 into a Jeep pretty easily to match the horsepower and torque of the truck if you want.
06-18-2013 10:17 AM
the Grouch Does your pickup have a selectable locking differential or an auto locker? What Chevy calls a locking differential is essentially a limited slip. As for ground clearance, is this with the stock Sport 29 inch tires? Even if it is with the 32 inch tires on the Sahara. Throw 33s and you beat the truc's ground clearance.
06-18-2013 10:03 AM
panthermark
Quote:
Originally Posted by TMO84 View Post
Looking to buy a JK unlimited sport and trade in my 2007 chevy colorado with Z71.

As I'm comparing the specs, I see that my truck not only has better ground clearance (9.0 v. 8.7) but has a locking differential (while the jeep unlimited sport model does not). Am I buying a vehicle that is inferior to the Z71 offroad package? What makes the JK unlimited superior to my 4x4 truck (aside from engine power).
Superior in what way?
It all depends on what you are trying to do with your vehicle.
06-17-2013 11:49 PM
MTH This is like saying my wife's GMC Yukon has more horsepower than a lotus, so getting a lotus would be stepping down in terms of racing potential.

The JKU sport would run circles around a Z71 offroad with its solid axles, wheel travel, and the entry/breakover/departure angles. Make it a JKU rubicon and then you've also got front and rear lockers, sway bar disconnects, and I'd bet a much deeper transfer case. And a d44 front axle to boot.

Not close, IMO.
06-17-2013 11:03 PM
2five22 Hmm... and what's the breakover angle on that Avalanche? The approach and departure angles are?
06-17-2013 10:38 PM
WatchThis!
Quote:
Originally Posted by TMO84 View Post
Looking to buy a JK unlimited sport and trade in my 2007 chevy colorado with Z71.

As I'm comparing the specs, I see that my truck not only has better ground clearance (9.0 v. 8.7) but has a locking differential (while the jeep unlimited sport model does not). Am I buying a vehicle that is inferior to the Z71 offroad package? What makes the JK unlimited superior to my 4x4 truck (aside from engine power).
I am thinking that if someone has to ask a question like this does it really matter which one is best offroad? People who need the best tend to know why they need it therefore they have a good idea what is better.
06-17-2013 10:30 PM
Rtone1583 The most simple answer is that the Jeep was built for, or at least around, off road function as its primary purpose.

The truck was built to haul stuff around first with off road capability second.

Though ground clearance is one indicator of off road prowess in this comparison it is irrelevant (.3 inches is about the same thickness of a Bic pen).

Some other aspects to look at are approach/departure angles and wheel base.

Would be willing to bet that the JKU Wrangler beats the Z71 on approach/departure angles and it may beat your Colorado on wheel base, which affects break over angle (JKU is 116" and the Colorado ranges from 111" - 126" depending on configuration).

Another aspect to consider is that the JKU has live axles front and rear against the Z71's independent front and live rear.

Depending on how you use your 4x4 the Z71 and Jeep may be equivilant to each other.

If you use it only to get around in crappy conditions either one will serve you as well as the other.

If you get into situations where suspension flexibility is required I believe that the JKU will serve you better since the suspension (springs/shocks) are the primary limiting factors in flex whereas the independent front of the Z71 is limited by the suspension as well as the CV joints on the half shafts.
06-17-2013 10:19 PM
Hokieneer Also can't forget about approach and departure angles and the rubicon has has 10.5" ground clearance under the front axle
06-17-2013 10:14 PM
lolpetewtf Ya that .3" of clearance is a total deal breaker.
06-17-2013 10:09 PM
Tweak
Quote:
Originally Posted by TMO84 View Post
What makes the JK unlimited superior to my 4x4 truck (aside from engine power).
a solid front axle with more than 3 inches of up and down travel. apples to oranges, a JK with 3" of lift and a good set of tires will go where a Z71 with 10" of lift and massive tires would only dream of.

also, the doors come off!
06-17-2013 09:16 PM
Sinister6 Look at the Rubicon. You're not comparing apples to apples...can't compare a pickup to a Jeep.
06-17-2013 09:13 PM
TMO84
4x4 and locking diff.

Looking to buy a JK unlimited sport and trade in my 2007 chevy colorado with Z71.

As I'm comparing the specs, I see that my truck not only has better ground clearance (9.0 v. 8.7) but has a locking differential (while the jeep unlimited sport model does not). Am I buying a vehicle that is inferior to the Z71 offroad package? What makes the JK unlimited superior to my 4x4 truck (aside from engine power).

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