CJ to TJ swap

Dec 29, 2006 15 Replies

Yesterday was a good day and a sad day. I drove to the local dealership in my '86 CJ and drove home in a '04 TJ. I got the X model (Columbia edition) with 13k miles. So in effect, i am a "new" jeep owner, since this TJ is a totally different animal than I what I have been driving for the past 10 years. I admit that there were tears in my eyes when I drove off the lot and looked back at my old jeep for the last time. The jeep is my daily driver and the CJ had gotten to the point where maintenance was a continuous affair and was a killer financially so.........what do i have to look forward to as I learn about this TJ besides being closer to the ground? I will not be able to get this one out on a trail for several months, so don't even know how to put it in 4wd yet.....but I won't have to jump out to lock in anymore hubs. Thanks in advance for comments and suggestions.


Hate to give up something you've put so much time and effort into... I know the feeling.

On the bright side assuming your CJ had the old 258. You've got a better more durable newer engine, with about the same power in that X even if it's got two less cylinders (X is the base model 4 banger? Or is that the SE, and the X is the base 4.0?) if it's the 4.0 it's better AND it's nearly twice as powerful* as a tired 258.

*Note: this is where someone (probably Bill) compares the 258's FLYWHEEL factory rated 100-ish horse power number to the 4.0's REAR WHEEL 140-ish factory number; and concludes that I'm wrong.

Your new Jeep rides better and articulates better. Mike and Bill will disagree, but they are wrong. Mike is wrong because he relies on his own anecdotal ("I did blahblah, and the TJ couldn't) evidence based on his high driver skill and experience. Bill is wrong because his Jeep 40 years ago had leaf springs and that's approximately the same point he buried his head in the sand and stopped allowing himself to adapt or evolve. Anyway it's superior and self-evident to anyone paying any attention to the modern off-roading world where coil suspensions rule all major dirt sports from Desert racing to Rock Crawling.

It's heavier, it probably has weaker axles and transfer case (depending on what your CJ had and how the X is optioned, but besides this is a more capable 4x4 in stock trim or with identical mods. In fact at the upper end of the scale (long arm, coil over TJ's), the CJ will require tricks like "revolver" shackles, or three quarter elliptical buggy springs or in fact total coil over "link" based suspension conversions to keep up...

What a pile of pure horseshit!

Mike

86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's Canadian Off Road Trips Photos: Non members can still view! Jan/06
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(More Off Road album links at bottom of the view page)

Congrats on the new Jeep. Hope it's trouble free for you.

Where are you located? I know several folks looking for CJ7's....

One really funny thing you can do with a TJ that you can't do with a CJ is to get out and walk it up a sand pit wall. The computer in that thing will not let it stall, so when you put it in 1st low and let out the clutch, it will drive itself up a hill without needing any gas pedal. This is neat because you don't spin tires easy that way. I have photos of a gent from this newsgroup literally walking outside while his TJ climbed the pit wall.

One really bad thing about them on sand or loose dirt climbs is the tires hop and spin really easily because of the soft springs which just digs holes really fast. You gotta watch your gas pedal and shift points carefully.

You also have to watch out for your rocker panels if you are crawling through boulders. Unlike the CJ7 which lifted the whole side of the Jeep up when you ran a tire over a rock, the TJ's coil will just let the tire come up leaving the rocker panel low. They do make nice rocker panel skid plates for them at least.

You will need to watch out for your air intake also. Lots of them have a ram air scoop just below the headlight so if you have water splash over the bumper, the engine will take a gulp. This is bad for pistons to say the least.... I have seen folks from this newsgroup use ABS pipe to route the air intake up and back for off road.

Have fun!

Mike

86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail >

I can post links to coil converted CJ's all day long, they are SURE as hell a lot more common than leaf sprung TJ's

Again one custom TJ does not prove your argument Bill, how in the world did you get though life into advanced senility without understanding that?

I'm sure that the 52" Michelin XLT clad coil sprung TJ that won Top truck challenge 06 can flex as much, Or how about the CJ8 with coil over suspension that won top truck challenge 05? Or the 55 WILLYS with coils that came in 2nd. In fact the top three finishers ALL HAD COILS AND ALL WERE JEEPS!... If that's not enough the LAST THREE placers all had LEAFS (two of them jeeps).

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At least my examples include multiple vehicles all competing over the same obstacles. All you have is a stupid picture of someone's rockwell axled TJ.

Did you find the missing link, Atlantis and the second shooter?

Actually Bill as I've said a few times now that the YJ is getting a 4.6L stroker. That's okay you go back to starring blankly at your dribble cup, and blurting out the occasional semi-relivant googled link.

Man you are a paranoid freak, behind the sign is my super secret radio-cranialrectifier, it beams signals to your house to instruct you to remove the former from the later.

unfortunately it's not working:

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(I've told him it's a holley throttle body injector three or four times but he's too far gone to comprehend anything at this point)

I did, you fruity lunatic :) I talked all about top truck challenge 05 in which leaf sprung Jeeps finished in the bottom 3 while Coil sprung Jeeps (a CJ8, 55 Willy's and a TJ) finished 1st 2nd and 3rd. I even gave you a link.

All you have is a picture, I've got an entire competition between custom

4x4's that has proven my point... I can also bring up Baja, Pro Rock crawling, CORE off-road racing. All those guy have forgotten more about Off-roading than you could ever cram into that tiny little noggin' of yours, even BEFORE you were overtaken with complete dementia.

Good grief you are one of the most insane usenet kooks ever. If I'm not mistaken you can even see the Holley base plate in that picture... What on earth do you think I would be hiding you crazy old coot? The worlds first Carter BBD that runs like something other than dog s*it? LOL

Go to the web site, no "stories" just cold hard competition results, from a bunch of 4x4's competing to see which was the most capable. Again Leaf sprung 4x4's did poorly and Coil sprung Jeeps swept the top three.

Four Wheeler magazine has held that competition for 10 or 15 years now, I know you've been totally divorced from reality for at least the past three decades. So I wont hold it against you that you don't know what it is.

There's no air filter on it in the Pic, I don't know what a Mickey mouse air filter is, but if I have to guess I'll bet that's your name for something you HATE because is wasn't made back in olden times from horse and buggy technology.

The only thing faulty here is your delusional little pea brain :)

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