Calgary Jeep Association

4x4 Related Groups => Tech Talk => Topic started by: barmanjay on December 23, 2007, 10:15:15 PM

Title: Swappability between YJ and TJ
Post by: barmanjay on December 23, 2007, 10:15:15 PM
I am completely a newbie with jeeps,.. but I do know 95 was the last year for the YJ and 97 was the first year for the TJ

Lots of little changes were made, like the fuel filling spout, front suspension, interior and etc.

What parts can be swapped without hassle?

bumpers?
front suspension?
interiors?
Title: Re: Swappability between YJ and TJ
Post by: Mudhawg on December 24, 2007, 01:46:19 AM
Quote from: "barmanjay"
I am completely a newbie with jeeps,.. but I do know 95 was the last year for the YJ and 97 was the first year for the TJ

Lots of little changes were made, like the fuel filling spout, front suspension, interior and etc.

What parts can be swapped without hassle?

bumpers?
front suspension?
interiors?


Jay in the YJ theres leafs were as the TJ has a coil spring suspension reallistically you could convery a YJ to TJ suspension but thats alot of work with coil buckets/control arms not sure bout the rest
Title: Swappability between YJ and TJ
Post by: LanceM on December 24, 2007, 07:14:36 AM
Almost sure that the rear tailgate is the only thing they kept the same for body wise.
Title: Re: Swappability between YJ and TJ
Post by: BlackYJ on December 24, 2007, 09:34:49 AM
Quote from: "barmanjay"
I am completely a newbie with jeeps,.. but I do know 95 was the last year for the YJ and 97 was the first year for the TJ

Lots of little changes were made, like the fuel filling spout, front suspension, interior and etc.

What parts can be swapped without hassle?

bumpers?
front suspension?
interiors?


Bumper - front no (different frame width) Rear yes
Suspension - basically no unless you are a fabricator
Interiors - not a lot.  I believe the seats can be changed but they are not a direct swap

Most of the interchangeability is in the drivetrain and driveline.  The engines, transmissions (except for later models), and t-cases are all the same and basically swap back and forth.  Now axles shafts for the most part can be swapped between the two.  That is about it for direct swap, but if you are willing to use a little imagination and have the tools anything can be done
Title: Swappability between YJ and TJ
Post by: barmanjay on December 24, 2007, 10:12:59 AM
so at least the rear bumper can be swapped LOL

wow,.. they look alot alike,.. but yet not much can be swapped betweeen each other.

How about a newer 2.5 I4?
Title: Swappability between YJ and TJ
Post by: BlackYJ on December 24, 2007, 02:17:50 PM
Quote from: "barmanjay"
How about a newer 2.5 I4?


The blocks for the 2.5L have not changed.  The intakes and exhausts manifold have due to the different fuel delivery and most of the accessory stuff swaps over.
Title: Swappability between YJ and TJ
Post by: 90YJGIMP on December 24, 2007, 04:28:48 PM
Last issue i have of JP magazine. They found the doors switched over between the YJ and TJ.
Title: Swappability between YJ and TJ
Post by: AV.NINE on December 24, 2007, 04:40:48 PM
Quote from: "90YJGIMP"
Last issue i have of JP magazine. They found the doors switched over between the YJ and TJ.


Wow, that wouldve been the nicest mod on my old yj...
Title: Swappability between YJ and TJ
Post by: BlackYJ on December 24, 2007, 09:56:07 PM
Quote from: "90YJGIMP"
Last issue i have of JP magazine. They found the doors switched over between the YJ and TJ.


I don't understand that one because the tilt of the windshields are different
Title: Swappability between YJ and TJ
Post by: barmanjay on December 25, 2007, 12:31:56 AM
So does that mean the hard tops dont swap either?

Also:

What motors will esentially "bolt" up to the current tranny

are the trannies jeep specific? or does other chrysler motors bolt up?

(I did use a search and didn't find what I was looking for)

I'm not even 100% sure what tranny the 5sp is on a 95 YJ 2.5 I4


I don't want to give up on gas mileage,.. i hear rumours of fuel hitting $1.50 this summer
Title: Swappability between YJ and TJ
Post by: dunl on December 25, 2007, 02:13:47 AM
Do a search on google using wikipedia and the jeep model you are looking for....for you, "Wrangler" should produce what you need:

http://en.wikipedia.org/wiki/Jeep_Wrangler

They actually give a fairly good listing of the specs for each model, although there are sometimes mistakes.

2.5, 4cyl, I4:  the tranny you are looking at is the AX5. :)

Merry Christmas
Title: Swappability between YJ and TJ
Post by: 90YJGIMP on December 25, 2007, 11:00:58 AM
JP magazine was surprised the doors fit to. They were adapting a TJ soft top to fit a YJ. They made it work, but required parts from both a YJ and a TJ soft top to do it. They tested the doors out and found the slope was on the front of the windshield and not the doors themselves.
Title: Swappability between YJ and TJ
Post by: barmanjay on December 25, 2007, 12:12:11 PM
Wow,.. cool info,.. I did a search for that ax5 tranny,.. and I see the gm 2.8 bolts up,.. that's crazy!
Title: Swappability between YJ and TJ
Post by: cuzican on December 25, 2007, 12:54:12 PM
I previously test fit my YJ doors onto my TJ and my recollection is the only issue was the door striker. The latching mechanisms are different - but you could probably adapt the YJ striker to the TJ. Apparently the YJ hard top will fit with some minor modification to the top of the TJ windshield frame.
Title: Swappability between YJ and TJ
Post by: barmanjay on December 26, 2007, 10:51:20 AM
Another off topic q?

does the 4.0 bolt up to the 2.5 tranny?
Title: Swappability between YJ and TJ
Post by: dunl on December 26, 2007, 08:24:53 PM
Not as far as I know, although the reverse is true (AX-15 bolts to the 2.5 engine) if you use a Dakota bellhousing from the 2.5 tranny for the AX-15. I was asking about this on Eco and was told to check on Pirate just the other day.
Title: Swappability between YJ and TJ
Post by: barmanjay on December 27, 2007, 12:17:37 AM
Quote from: "dunl"
Not as far as I know, although the reverse is true (AX-15 bolts to the 2.5 engine) if you use a Dakota bellhousing from the 2.5 tranny for the AX-15. I was asking about this on Eco and was told to check on Pirate just the other day.


damn,.. that kinda sucks

options are seeming kinda slim now

edit:

ok,.. so I did some more searching and found in 84-86,.. the cherokee's used a gm v6 (the 2.8,.. which is still the same block as the newer grand am's 3400 engine [200hp] - just aluminum instead of cast iron) with the ax5 tranny.


Here's a q for you guru's,.. is the bellhousing the same between the 2.5 I4 and the 2.8 v6?

edit again:

ok i did some more searching

got this off another 4x4 forum

Quote
The 2.5L in front of your AX-5 uses a GM 60 degree V6 bellhousing pattern, not the GM 90 degree pattern that the GM "Iron Duke" 4cyl used in CJ's uses, as long as you used a bellhousing from a late CJ with the AMC 4cyl I "think" you'd be okay, or you can get a bellhousing from a 2.8 V6 S-10 with a T-5 and modify/drill the bellhousing to fit the T-18


So the end my engine search if I can't find a replacement 2.5 I4,.. i will drop in a 3.1 or 3100/3400 if I can find.
The cavalier engine harness should be an easy swap (91-94 ign plugs on the column [blue and black] i noticed are exactly the same,.. infact i think they might be the same column)

at least i can get the engine running with a cavalier ecu

[/off topic]

[resume topic]

are the front grilles swappable between?

not that i don't like the square headlights,.. maybe there are better upgrades possible?
Title: Re: Swappability between YJ and TJ
Post by: barmanjay on December 28, 2007, 09:19:19 PM
So this is what I'm getting so far


Swappability between



                  YJ    <--->   TJ
-----------------------------------------------

         Tailgate   <--->   Tailgate
Rear Bumper  <--->  Rear bumper
        Rear seat  <--->  Rear seat
               Doors  <---> doors (need to swap strikers?)
           Soft top  <---I  (with mods)
          Hard top  I--->  (with mods)


Anything else?

fenders?
front windscreen?
grill?
Title: Re: Swappability between YJ and TJ
Post by: Trouble Maker on December 29, 2007, 12:08:30 AM
Another off topic q?

does the 4.0 bolt up to the 2.5 tranny?

If it does it probably wouldn't last long since you hear of people breaking them with the 4 banger.