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How to lower an XJ and go road racing-

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Old Jan 13, 2011 | 10:26 PM
  #16  
xjdirtbath's Avatar
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From: East Freetown MA
Year: 2000
Model: Cherokee
Engine: 4.0
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Any plans on a 4.7 stroker and some tranny work (shift kit) in the future?
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Old Jan 13, 2011 | 10:31 PM
  #17  
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From: Hesperia
Year: 89
Model: Cherokee
Engine: 4.0
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lowered race cars are cool. low riders are gay imo.

that thing is awesome and i love the sticker on the windshield
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Old Jan 13, 2011 | 10:51 PM
  #18  
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From: Issaquah, Wa
Year: 1998
Model: Cherokee
Engine: 4.0
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Originally Posted by xjdirtbath
Any plans on a 4.7 stroker and some tranny work (shift kit) in the future?
We're pretty strictly limited on the $500 budget, and it is technically a "claims race" (maning the organizers can walk up to you, hand you $500 and they own your car) to keep people honest, so dumping several grand into a stroker is more or less out of the question. I am currently working out the kinks on a budget supercharger, however. Should give me about 4.8 psi and is electrostatically actuated like an A/C clutch, and actually will fit right where the compressor on the XJ is now (I'm thinking a Staples Easy Button for the actuator).

As for the tranny, the AW4 is an extremely tough and reliable unit so it will be staying, but we are currently testing out a prototype road/track oriented AW4 controller for RADesigns: clicky

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Old Jan 13, 2011 | 11:29 PM
  #19  
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From: Jacksonville, FL
Year: 92
Model: Cherokee
Engine: 4.0
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I can't believe you are still running an aw4 in that
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Old Jan 13, 2011 | 11:55 PM
  #20  
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From: Issaquah, Wa
Year: 1998
Model: Cherokee
Engine: 4.0
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Originally Posted by N20jeep
I can't believe you are still running an aw4 in that
Why? It's an extremely stout transmission; I've heard anecdotal chatter about Supra guys running huge horsepower (like 700+) numbers with minor mods. I did install a huge tranny cooler to make sure things didn't get too hot.

As a fan of manual transmissions, I was kinda bummed that all I could find were automatics when I was searching for the rig initially. I kept running into the same thing; every XJ that was cheap enough (under $500) was older, and would have come with the abysmal, horrible, POS Peugeot BA10/5. If I could have found a 91+ with an AX-15, I probably would have gone that route, but now I'm actually rather glad I ended up with the slushbox. When you're driving at the limit for hours on end in heavy race traffic, not having to worry about heel-toeing every downshift is nice.

Still, it does feel a little like cheating.

-Matt
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Old Jan 14, 2011 | 12:06 AM
  #21  
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I'm posting this in another forum....it should make EVERYONES night.
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Old Jan 14, 2011 | 12:09 AM
  #22  
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From: Chesapeake, Virginia
Year: 2002
Model: Grand Cherokee
Engine: 4.7
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thats so sweet, its weird me and my buddy just had a conversation about road racing a cherokee, i want a 2wd and lower it a little and make it a sleeper, and a dd for me, cause im sure it would get wayyyyy better mpg then mine now haha
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Old Jan 14, 2011 | 01:19 AM
  #23  
IXNAYXJ's Avatar
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From: Issaquah, Wa
Year: 1998
Model: Cherokee
Engine: 4.0
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Originally Posted by Back_In_Black
I'm posting this in another forum....it should make EVERYONES night.
Knock yourself out. Care to share the inferred inside joke?

-Matt
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Old Jan 14, 2011 | 04:36 AM
  #24  
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From: CT.
Year: 88
Model: Comanche (MJ)
Engine: 4.0 HO
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Very interesting Thread.
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Old Jan 14, 2011 | 05:32 AM
  #25  
98Plum Crazy's Avatar
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From: Gilman, IL
Year: 1998
Model: Cherokee
Engine: 4.0
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Break the mold and keep doing what you are, looks good!
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Old Jan 14, 2011 | 06:14 AM
  #26  
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From: Fort Myers, FL
Year: 1996
Model: Cherokee
Engine: 4.0L High Output OBDII
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Very well may have seen it on a NAXJA link. Put a shoe either on the Jeep or in front of a trophy, take a picture. and you'll have my full attention.

I just hate trolls, lmao. And admit, this is so cool, anyone here would lay claim to it if they could.
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Old Jan 14, 2011 | 08:19 AM
  #27  
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From: Miami,Fl
Year: 1998
Model: Cherokee
Engine: 4.0 L6 Srt
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Thanks for all the info, as soon as i have the time and a garage to tackle this project i will keep updates about it. I was thinking in just getting all new suspension mounts..


Anyways thank you very much, you have given me more inspiration to build this project as DD and racer.. Any jeep guy knows these things are quick but for the unknown they wont know what hit em..

Im going to use my 8.25 chry so i was already figuring the 5-6" drop in rear and instead of add-a-leaf i was thinking shackles to bring it up a lil??. im pulling a extra set of springs from the JY to test out various heights for the front.. and if i find a zj with rear discs im def plan on doing the conversion.. all in all you say it handles well with your setup so ill pretty much follow in your foot steps..

Actually what would be the difference between a zj rear end and an xj?? Is the width slightly different? will the drive shaft bolt up? Ive seen the conversion but always wondered if it could be a direct swap. Anyways ill keep the Q's coming and progress updated.

One more things keep us updated on the shifter.. im very interested cuz i dont use OD that much unless im on the highway.. Seems to conserve gas as the engine is more free instead of being forced to accel.

Wheels selection is great i planned on running the Black Rock series steelies similar to the cragar, 16x8 sounds good in size relative to tire selections.. I would like to have A/t tires just in case i plan on dirt racing a bit. Again this is more of a daily driver than a racer, until engine modifications come into play. Also its the family vehicle..lol

Last edited by 98jeepsrt6; Jan 14, 2011 at 08:32 AM.
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Old Jan 14, 2011 | 10:15 AM
  #28  
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From: Edmond, OK
Year: 1993
Model: Cherokee
Engine: 4.0 ltr
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Originally Posted by IXNAYXJ
Yeah, The Archer brothers raced 4-cylinder MJ's in the late 80's in SCCA Sport Truck, even won a couple championships. I mentioned notching the front axle in my original text, and that's exactly what they did to get the camber in the front axle and clear the oil pan of the 'Manches they raced. Tommy Archer later went on to become better known for racing Vipers (and winning a lot) in the 90's.

http://www.archerracing.com/history.htm

-Matt
Yeah.. on another forum where I posted the SCCA trucks there was discussion about what type of front suspension they were using. To get right down to it I contacted Archer racing and found out they did use a modified stock front axle and fiberglass mono leaf rears. Here is his email to me.


"Well im glad to here someone is still active with the old jeeps. they were the stock axles that we slightly modified to get more camber in them. and we ran with bilstein shocks and custom eibach springs. and also custom fiberglass rear leif springs.

Thanks again
John Archer"

Last edited by prerunner1982; Jan 14, 2011 at 06:01 PM.
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Old Jan 14, 2011 | 12:23 PM
  #29  
IXNAYXJ's Avatar
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From: Issaquah, Wa
Year: 1998
Model: Cherokee
Engine: 4.0
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Originally Posted by Bustedknuckle
Put a shoe either on the Jeep or in front of a trophy, take a picture. and you'll have my full attention.
Will this satisfy your paranoia?

The race car is at Petty Cash World Headquarters, so I put the trophy and one of my racing shoes on the hood of my big-boy XJ:

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-Matt
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Old Jan 14, 2011 | 12:28 PM
  #30  
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From: Lansing, MI
Year: 92 abd 98 XJ
Model: Cherokee
Engine: 4.0
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I checked out your FB page too. You guys are in it to win it. Im excited to see how you guys do.
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