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Kj Faq

134847 Views 51 Replies 34 Participants Last post by  remmons
Hey all! I'm working on creating a KJ faq. Would you guys mind checking over my info and giving me some feedback. Also, you all are welcome to use this info if you find it useful.
Thanks!
:wave:

Oh, I don't have a KJ, but I do have one in the extended family. :D
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IFS=Independent Front Suspension

SAS= Solid Axle Swap

LOST Tech Info = http://www.kjjeep.com/custom2.html

Rock Crawler Review: http://www.rockcrawler.com/reviews/jeep/liberty_2002/index.asp

Specs: http://www.southpointjeep.com/liberty/specs/feature6.html

In April '02 the KJ springs were lowered 3/4".

Engines:

2.4L I4

2.8L I4 Turbo CRD (Common Rail Diesel) available in '05

3.7L V6 (pictured below)

Source: http://www.rockcrawler.com

Transmissions:

NV1500, 5spd comes with the 2.4L

NV3550, 5spd comes with the 3.7L Sport model

45RFE, 4 spd auto 3.7L in '02

42RLE, 4spd (same as '03+ TJs) in '03

NSG 370, 6spd available in 2005

Tcase:

NV231 Command Trac/Part-time

NV242 Selec Trac/Full-time

Front Axle:

D30, IFS


Source: http://www.rockcrawler.com

Rear Axle:

Chrysler 8.25, 29 spline


Source: http://www.rockcrawler.com

Lockers Available for the 8.25: ARB (selectable), Detriot, and Powertrax No Slip
Limited Slip Options for the 8.25: Auburn Gear LSD, Trac-Lok LSD

Available Gear Ratios:

3.55

3.73

4.10

*Optional 4 wheel disc brakes for all models

KJ Lifts:

Rusty's 2.5" coil spacer lift, or 2.5" suspension lift http://rustysoffroad.com/

OME suspension lift 1.5" front, 1.75" rear

Day Star 2" spacer kit

RockFather 2.5" spacer kit

Rocky Road Outfitters (RRO) 2.125" spacer combo and 2.5" OTT system

Good lift info.... http://www.rocky-road.com/kjsus.html

Tire Size Chart: (How much lift for X" tire?)

http://b22.ezboard.com/fkjjeepfrm16.showMessage?topicID=2.topic Sorry, this link is dead
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Here's what I would like to see in an KJ FAQ sticky thread. These questions are asked about once every other week.

What is the difference between lowered and prelowered?

What lifts are available for the KJ?

What is the largest tire size that will fit without rubbing (with and without a lift)?

What changes have occurred between the 2002 and (present year model) KJs?
 

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Discussion Starter · #3 · (Edited)
PA_KJ said:
Here's what I would like to see in an KJ FAQ sticky thread. These questions are asked about once every other week.

What is the difference between lowered and prelowered?

What lifts are available for the KJ?

What is the largest tire size that will fit without rubbing (with and without a lift)?

What changes have occurred between the 2002 and (present year model) KJs?
OK, great! I know that the KJs were lowered 3/4" in April '02, which is the lowered/prelowered designation and makes some difference in tire fitting/lift results. I'll stick that in there along with some lift info and tire charts.

I have no idea on all of the changes for the KJs from '02 - '05. I'm still learning about all the TJ changes and working on that FAQ as well.
Thanks for the help!
:wave:
Oh, I also tossed in some traction device info as well.
 

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another thing is most people dont know when to use 4WD, or 4lo for that matter. (which weather/environment conditions must be present)
 
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Your missing the following available lift kits:

All J Products Frakenlift 2.5" lift kit: http://www.boulderbars.com You have to ask for it. It's not listed on the web site.

BDS Suspensions - 2" front/1.5" rear lift kit: http://www.bds-suspension.com

Revtek spacer 2" lift kit: http://www.revtek.com

Skyjacker Platinum Coil Over 2.5" lift kit (LIB250K): http://www.skyjacker.com

Skyjacker spacer 2.5" lift kit (KJ25): http://www.skyjacker.com

Teraflex spacer 2" lift kit

Additionally, a couple companies are developing large lift kits:

RockKrawler 7-up long arm lift kit: http://www.rockkrawler.com/ A picture of a 7-up equipped KJ is currently on the front page.

Superlift 4.5" lift kit: http://www.superlift.com This lift is not listed on their site either. It is probably still in development.
 

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Some more detailed information on the difference between lowered and prelowered...

All KJs produced prior to April 2002 are considered "prelowered". All KJs produced from April 2002 on are considered "lowered". Autoweek magazine rolled a 2WD KJ in a slalom test so fearing the potential fallout DC started lowering all KJs 22mm (0.87") in the front and 19mm (0.75") in the rear. There were several different front suspension set ups used throughout the earlier years so there may be several different heights for 2002s and 2003s.

Some information on model changes...

http://www.jeepforum.com/forum/showthread.php?t=99580&highlight=lowered
 

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Which model year KJ rolled over in their test?
 

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I'll read that link when I get back from work tonight.... Did the 4WD one pass because it was a heavier vehicle than the 2WD---- or because the driver engaged 4-HI in the 2nd test?
 

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Discussion Starter · #13 ·
Gsan said:
I don't think anybody mentioned the tranny change. something like a 45 tranny and a 42 tranny. I don't know all the details.
The '02 had the 45RFE and was switched to a 42rLe (same as '03+ TJs) in '03 based on this link.
http://www.storesonline.com/site/573683/page/372742

I guess I should probably add that to the top, huh...
 

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Additions to the FAQ

Also worth adding, is that the 2005 CRD - despite what the "specs" say - comes with the 16inch ("Mechanica" - optional on Liberty Sport models) wheels and 225/75/R16 tires....

And that the 2005 models have a new plastic kick plate.

And possibly that the Renegade models have different hoods and front grills... (flatter hoods, bigger grills with no fog lights, as they are on the bumper (and a slightly different bumper as well))
 

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Luther said:
What tranny does the 05 CRD come with and how is it different if at all from the gas model?
They have the Chrysler-designed electronic 545RFE 5-speed automatic - the same one found in Hemi-powered Ram trucks.

Gas models have a 5spd manual, 6spd manual (depending on year, 05+ models have the 6spd), or a 4spd auto (42RLE), depending on engine (2.4L I4 is manual only, 3.7L V6 can have either).
 

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PA_KJ said:
Here's what I would like to see in an KJ FAQ sticky thread. These questions are asked about once every other week.

What is the difference between lowered and prelowered?

What lifts are available for the KJ?

What is the largest tire size that will fit without rubbing (with and without a lift)?

What changes have occurred between the 2002 and (present year model) KJs?
On my 2002 I have the rocky road OTT lift and I put 255/70/16 Revo's on it and they rub like crazy. I had to cut out some fender and smash back the pinch seam.
I just ordered the Rockfather II Kit and will have it put on next week, let's see if this helps.
 
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