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post #241 of 2521 Old 04-04-2011, 08:41 PM
dkpulsford
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So, these things confuse me explain por favor. The Grand has 4hi and 4lo but no 2wd? Is it an AWD system that has a "lo range"?
my Wj has 2hi, parttime4, N, 4hi, 4lo. thats behind my i6


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post #242 of 2521 Old 04-04-2011, 08:42 PM
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that WJ has the upcountry package as well so its about 3/4" taller with upgreaded springs, shocks, skid plates (front, TC and gas tank skids) and tow hooks up front.. not bad.. first year of the european leather..

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post #243 of 2521 Old 04-04-2011, 08:44 PM
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its the same as your rubicon it just doesn't have a 2wd option. still the same set up with a transfercase and everything.. the reason is the Quadradrive system... It can send power to front, rear, left right or even one tire.. but usually its sends most the torque to the rear during normal driving conditions and acts like a rear wheel drive vehicle...

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post #244 of 2521 Old 04-04-2011, 08:49 PM
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its the same as your rubicon it just doesn't have a 2wd option. still the same set up with a transfercase and everything.. the reason is the Quadradrive system... It can send power to front, rear, left right or even one tire.. but usually its sends most the torque to the rear during normal driving conditions and acts like a rear wheel drive vehicle...
That still doesn't make sense. You are telling me that it is an AWD vehicle with a transfer case? That's nothing like any 4x4 I've dealt with before. It is wierd and strange like my friends transmissionless transfercaseless 4wd Escape.

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Meh. Jake's is longer. I've seen it...
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post #245 of 2521 Old 04-04-2011, 08:53 PM
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Soooo, looking at the pictures I see what I thought was frame is just stamped sheetmetal?! Grands are uni-bodies?! I honestly had no idea, don't know a thing about them at all. So, it is a frameless 4x4 AWD fulltime 4hi V-8? What?????? You dub guys are really really wierd. What do you mount a winch, or bumpers, or tow points from? If you have a heavy winch and bumper, or rear carrier and bumper, does it bend the body?

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Meh. Jake's is longer. I've seen it...
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post #246 of 2521 Old 04-04-2011, 08:57 PM
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The escape WILL have a transmission and transfer case unless it has an electric motor at each wheel. Which Chevy originally tried with the Volt until they realized that trying to get all four motors synchronized 100% equally in power and RPMs is next to impossible.

They may not be a transmission and transfer case like we're normally used to, but it will have them.

The WJ transfer case works along the same line as a NP242 in 4FT range. The NV247 is basically a normal transfer case with a limited slip differential in between the two drive shafts.

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post #247 of 2521 Old 04-04-2011, 08:58 PM
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XJ's, ZJ's, WJ's. Liberty, Commander and Patriot. All are unibody.

Except for one thing, the unibody "frame" under them is pretty much a normal boxed frame with the top plate taken off and welded direct to the body. So the chassis is just as strong as a Wrangler, just zero chance of a body lift.

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post #248 of 2521 Old 04-04-2011, 09:00 PM
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Darrin, isn't it the NP247 that has the lsd?

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post #249 of 2521 Old 04-04-2011, 09:01 PM
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Yeah, forgot to mention that the NP242 in 4FT has an OPEN differential between the drive shafts. The NV249 and NV247 have limited slip. The 249 has a viscous coupler and the 247 has a gerotor coupler to enable the limited slip.

Fixed it.

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post #250 of 2521 Old 04-04-2011, 09:02 PM
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Gotcha. Which is better between the 249 and 247?

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post #251 of 2521 Old 04-04-2011, 09:05 PM
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The escape WILL have a transmission and transfer case unless it has an electric motor at each wheel. Which Chevy originally tried with the Volt until they realized that trying to get all four motors synchronized 100% equally in power and RPMs is next to impossible.

They may not be a transmission and transfer case like we're normally used to, but it will have them.

The WJ transfer case works along the same line as a NP242 in 4FT range. It's basically a normal transfer case with a limited slip differential in between the two drive shafts.
Hmmmm, the clouds are parting.

Except for the Escape. We have been underneath it and there is no transmission transfercase or even rear driveshaft, though it is 4wd. It is a very strange setup. Very strange to drive as the RPM's on the motor just continue to climb then at some point they stop climbing though you may still be accelerating. This feels like a CVT to me, but again there is no visible transmission. I always thought that it had to do with electric motors as well.

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Meh. Jake's is longer. I've seen it...
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post #252 of 2521 Old 04-04-2011, 09:05 PM
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247 by a mile. Pretty much every 249 ever put in a ZJ has a failing viscous coupler after 150,00 miles. The PART is $500 (plus tax, delivery and installation). Pretty much everyone with a ZJ that knows what they are doing puts a 231 or 242 out of an XJ in when the 249 starts to fail.

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post #253 of 2521 Old 04-04-2011, 09:09 PM
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I can't even find anywhere that the 249 was put in the WJ.. was it just a ZJ thing?

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post #254 of 2521 Old 04-04-2011, 09:09 PM
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Hmmmm, the clouds are parting.

Except for the Escape. We have been underneath it and there is no transmission transfercase or even rear driveshaft, though it is 4wd. It is a very strange setup. Very strange to drive as the RPM's on the motor just continue to climb then at some point they stop climbing though you may still be accelerating. This feels like a CVT to me, but again there is no visible transmission. I always thought that it had to do with electric motors as well.
If I remember rightly the Escape uses the same sort of system I had on my 1986 Toyota Tercel 4X4 wagon. It's a standard front wheel drive system with a transverse mounted engine and transaxle with an added "transfer case" built into it. On the ring gear of the transaxle differential they take an output off for the rear drive shaft. On the Escape I do believe the drive shaft is hidden up inside the unibody. If you can get it up on a lift and check around where the exhaust comes down from the engine, you'll probably see the tiny little rear drive shaft come out. It'll only be about the same diameter as a passenger car's anti-roll bar (at the most 1" in diameter).

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post #255 of 2521 Old 04-04-2011, 09:11 PM
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Yup, I was right. Except for the 1" in diameter thing. Looks actually rather stout.


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