07/12 Q/A Session - Wrangler and Wrangler Unlimited - Page 6

DILYSI Dave · 07-12-2007, 04:27 PM

Quote:

Originally Posted by JeepEngineers

Without the crush cans the system operation is affected.

Can you elaborate? I would assume that the system is still triggered by accelerometers and that the elimination of the crush cans would at worst result in airbag deployment at a lower speed.

JeepEngineers · 07-12-2007, 04:27 PM

Quote:

Originally Posted by greggradwohl

There have been many posts, of Rubicon owners, who have problems with their lockers not unlocking.
Do you expect this to be fixed in the 08 Rubicons?

The most likely cause of the TJ Rubicon lockers not locking was the air hose being pulled off. The new JK lockers have avoided this by getting rid of the need for air lines at all. The air pumps that were mounted to the TJ skid plate have been removed and replaced by an electromagetic coil installed directly in the axle. The lock mechanism is beefed up too to account for the larger tires.

mendelmax · 07-12-2007, 04:27 PM

Quote:

Originally Posted by JeepEngineers

I'm guessing you are talking about swapping the T'case on a JK. Depending on what donner vehcile you get the 242 from it will bolt up to the trans. You will likely need new drive shafts, I'd recommend putting a rear slip yoke eliminator kit on too. The stock JK already has this. The ESP should not give you problems when running in full time, but you might run into some electrical issues getting the T'case position switch to match with the vehicle harness. Best bet is to use the position switch out of the removed T'case.

This will be a pretty big job.

Thanks a lot for the info, you guys are great

One more question- what kind of electrical connections does the JK systems have with T-case? Is it only an information about being in 4lo or what? I would like to know how hard rewiring it would be

**JBWood05TJ** · 07-12-2007, 04:27 PM

Hello, and thank you for taking the time.

I just bought an '05 TJ. It has the D35 rear axle with 3.07 gearing. I'm think of lifting it a little and putting 33" tires on it. Many folks have varying opinions here about the D35, but most warn me about breakage with tires of that size and advise of the need for a regear to 4.10 or 4.56.

What advice can you give me on this subject?

JeepEngineers · 07-12-2007, 04:28 PM

Quote:

Originally Posted by Filmpros

Is there added lift on a stock Rubicon over a Sahara or X Model? It appears there may be...can you confirm and how much if any?

Tires would be the only part to influence lift. There is no suspension height difference.

Scotch740 · 07-12-2007, 04:28 PM

Future suggestions:

Make the mirrors mounted to the body not the doors.

Put in a door defeat switch standard.

Use a flat Transfer Case skid or at least one that does not hang down 4" and gets nicknamed "The shovel"

Have the transfer case shifter linkage attached to the transfer case and not the body.

Have a full roll cage built in to every model.

The paint on my 05 is horrible, for as much as these cost new can you spend a little more for some tougher paint on. (many have complained about this on the newer models)

Some of these might have been addressed in the JK and I applaud you for that.

I love my LJ, so glad to have the extra room and towing. Thanks again for your time designing our jeeps and the time answering our questions on here.

<-- not while your designing. (probably how that shovel got over looked)

howellru · 07-12-2007, 04:29 PM

Quote:

Originally Posted by JeepEngineers

Without experiencing it myself, I'm going to hazard a guess that you've got engagement delay. This could be as simple as burnt fluid that needs to be changed or your transmission may need a complete overhaul. My suggestion would be to change/flush all the fluid, change the filter and adjust the bands before condemning the unit to a rebuild.

Adjust the bands? It that something an oil change place (i.e. Speedy Oil Change) would know to do with their flush or should I take it to a trany shop?

Filmpros · 07-12-2007, 04:30 PM

The stock alternator is rated at 160 amps on a 2008 Rubicon.

I would assume the vehcile running all electronics could not draw more than 70 amps or 80 amps at most. Correct? I would think I have the headroom with a stock alternator to draw an additional 60 amps...no?

Quote:

Originally Posted by JeepEngineers

I assume you have a JK and you would need to upgrade the alternator if you want 60 amps. We do not sell a larger alternator for JK

JeepEngineers · 07-12-2007, 04:30 PM

Quote:

Originally Posted by howellru

Adjust the bands? It that something an oil change place (i.e. Speedy Oil Change) would know to do with their flush or should I take it to a trany shop?

I doubt an oil change place would know how to do this properly. A trans shop or dealer will, or you can get a FSM at www.techauthority.com and do it yourself.

greggradwohl · 07-12-2007, 04:30 PM

Quote:

Originally Posted by JeepEngineers

The most likely cause of the TJ Rubicon lockers not locking was the air hose being pulled off. The new JK lockers have avoided this by getting rid of the need for air lines at all. The air pumps that were mounted to the TJ skid plate have been removed and replaced by an electromagetic coil installed directly in the axle. The lock mechanism is beefed up too to account for the larger tires.

I should have been more specific. This is happening on 2007 versions. From the posts, a groove is wearing into something and not allowing locker disengagement. I will assume this was a defect on those particular lockers.

JeepEngineers · 07-12-2007, 04:30 PM

Quote:

Originally Posted by merfsiu

Any way to correct the speedo for tires larger than the largest OE 32"?

Thanks

The dealer cannot reprogram the tire circumfrence in the TIPM for larger than 0E 32 tires

JeepEngineers · 07-12-2007, 04:31 PM

Quote:

Originally Posted by greggradwohl

Thanks for your time.
If I get an X with the rear locker option, does it come with 32 spline axles?

The rear locker axle has 32 splines. The open and Trac-Lok axles have 30 splines.

The model 30 front axle will have 27 splines, while the Rubicon front axle will have 30 splines.

JeepEngineers · 07-12-2007, 04:31 PM

Quote:

Originally Posted by JBWood05TJ

Hello, and thank you for taking the time.

I just bought an '05 TJ. It has the D35 rear axle with 3.07 gearing. I'm think of lifting it a little and putting 33" tires on it. Many folks have varying opinions here about the D35, but most warn me about breakage with tires of that size and advise of the need for a regear to 4.10 or 4.56.

What advice can you give me on this subject?

I would regear just from a perofrmance standpoint toa 4.10.

scottlaroc · 07-12-2007, 04:31 PM

Any chance on getting a "how-to" video for lowering the soft-top on the four door?I broke the two front plastic knuckles when lowering the last section.Thanks again.

JeepEngineers · 07-12-2007, 04:32 PM

Quote:

Originally Posted by JBWood05TJ

Hello, and thank you for taking the time.

I just bought an '05 TJ. It has the D35 rear axle with 3.07 gearing. I'm think of lifting it a little and putting 33" tires on it. Many folks have varying opinions here about the D35, but most warn me about breakage with tires of that size and advise of the need for a regear to 4.10 or 4.56.

What advice can you give me on this subject?

Well, no official OK to modify a vehicle, but, the D 35 will be challanged in the strength department with a 33" tire.

I know many have done it with sucess, but drive with a light foot !!

Bigger is better when it comes to axles

Have fun !

07-12-2007, 04:31 PM	#89
scottlaroc Registered User Join Date: May 2007 Location: new york Posts: 199 Profile Gallery Classifieds My Jeeps	Any chance on getting a "how-to" video for lowering the soft-top on the four door?I broke the two front plastic knuckles when lowering the last section.Thanks again.