2.5-4.0 swap is underway!! - Page 8 - JeepForum.com

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post #106 of 172 Old 03-06-2011, 02:17 PM
Offroader239
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Thanks 1997 TJ Wrangler,
But im kinda looking for like a more specific measurement.. it looks like about an inch or so forward.
Do you no if i am correct?

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post #107 of 172 Old 03-09-2011, 02:24 AM Thread Starter
RnEmOvr
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Quote:
Originally Posted by Offroader239 View Post
Thanks 1997 TJ Wrangler,
But im kinda looking for like a more specific measurement.. it looks like about an inch or so forward.
Do you no if i am correct?
yes they need to be moved, how far I dont remember. What I did was bolt them to the motor, place it in frame and welded accordingly, just make sure that you leave clearence for the fan and radiator, mine is close to the firewall as possible
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Originally Posted by Grewe02 View Post
Shh you. I didn't scroll all the way back.
Nobody will mind if you resurrect an old thread for a legit reason.

I'm quite sure that they do need to be moved. Not positive, but I believe so. Might want to wait for Randy or someone else to comment.
we all know you never read everything LOL



Sorry to all those who asked questions and sent PMs, I wasnt getting the emails. Feel free to email me any questions, my email is my screen name at hotmail


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post #108 of 172 Old 03-28-2011, 12:06 AM
navy4life
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Alright, i've read this from the beginning and i have one question for you since your a pro now. Ive got a 99 TJ with the 2.5, and I want to do this exact swap. I have almost everything, except somebody told me that i would need to swap out the input shaft on my transfer case if I wanted to do this, but to my knowledge the 2.5 and 4.0 came with the same np231 transfer case? any help would be appreciated, also GREAT write up!! definitely helped me out
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post #109 of 172 Old 03-28-2011, 12:42 AM
Griff97
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The 2.5 NP231 uses a 21 spline input. The 4.0 NP231 uses a 23 spline input. As for everything else that I've seen they are exactly the same other than the input shafts.
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post #110 of 172 Old 04-05-2011, 01:13 AM Thread Starter
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^agreed good call Griff


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post #111 of 172 Old 04-27-2011, 04:39 AM
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my Congrats !!!
we are doing the same right now into a friends tj '99.
i have seen that you used new oem frame mounts and you diy reinforces. nice job
the question is about new frame mounts position? do you remember or someone else who did that swap before how much forward did you weld the new mounts ? need some serious mesurements here ?

waiting from you guys
thanks in advance


TJ '03 SAHARA EDITION


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Thanks..
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post #112 of 172 Old 04-27-2011, 04:32 PM Thread Starter
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Quote:
Originally Posted by MODUS
my Congrats !!!
we are doing the same right now into a friends tj '99.
i have seen that you used new oem frame mounts and you diy reinforces. nice job
the question is about new frame mounts position? do you remember or someone else who did that swap before how much forward did you weld the new mounts ? need some serious mesurements here ?

waiting from you guys
thanks in advance
I don't have the measurements if you read up a few post you will see how I positioned mine


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post #113 of 172 Old 03-06-2012, 11:28 AM
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Resurrection!

Time to resurrect it again...

I got a 2002 TJ, and a 4.0L from a 2006..

Got EVERYTHING to do the swap and I'm into it $1700 total. Probably gonna swap it this weekend.

Awesome write up!!!! Thanks so much.

I'll post some updates as they come..

Ian
AME2 USN, Disabled Vet
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post #114 of 172 Old 09-10-2012, 12:43 AM
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same here....in the process of putting in a 4.0 and AW4. so far its the wire harness adn ecu that is the pain in the but. everything so far has not been so bad, and having a father that is a welder helps.
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post #115 of 172 Old 10-07-2013, 12:37 AM
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Ok Im basicly in the ends of this. but... lol I swapped a 99 cherokee 4.0 to my 01 tj. the issue im having is the skid plate. do I have to drill new holes for the tc to align with the yoke of the diff.. because it seems it is not aligned proprely..


Really need some help with this!!

Thanks!
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post #116 of 172 Old 10-07-2013, 12:46 AM
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Quote:
Originally Posted by Dirty_Bird View Post
Ok Im basicly in the ends of this. but... lol I swapped a 99 cherokee 4.0 to my 01 tj. the issue im having is the skid plate. do I have to drill new holes for the tc to align with the yoke of the diff.. because it seems it is not aligned proprely..
What transfer case and transmission are you using?

Filling in your profile helps...
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post #117 of 172 Old 10-07-2013, 01:07 AM
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Originally Posted by Knuckelhead View Post
What transfer case and transmission are you using?

Filling in your profile helps...
oh sorry.. the ax15 with the 23 splines for the TC.

It camed out of the cherokee and fully going into the tj.. well its there..

also i do have the SYE on the TC. BUT that should not change the alignment of the tranny and TC to the Diff.

Like there is a few inches off for sure. im wondering if IM just paranoid or is this really an issue?
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post #118 of 172 Old 10-07-2013, 01:12 AM
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Quote:
Originally Posted by Dirty_Bird View Post
oh sorry.. the ax15 with the 23 splines for the TC.

It camed out of the cherokee and fully going into the tj.. well its there..

also i do have the SYE on the TC. BUT that should not change the alignment of the tranny and TC to the Diff.

Like there is a few inches off for sure. im wondering if IM just paranoid or is this really an issue?
What exactly is off, I don't understand what you're having an issue with?...
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post #119 of 172 Old 10-07-2013, 01:15 AM
Dirty_Bird
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ok , if i was to install a drive shaft right now.. there is an angle from left to right and from up to down. so the transfer case is not aligned to the rear dif for the driveshaft. not sure if this is normal but it is more on the passenger side.

does that make more sence?
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post #120 of 172 Old 10-07-2013, 01:24 AM
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Quote:
Originally Posted by Dirty_Bird View Post
ok , if i was to install a drive shaft right now.. there is an angle from left to right and from up to down. so the transfer case is not aligned to the rear dif for the driveshaft. not sure if this is normal but it is more on the passenger side.

does that make more sence?
Can you post a picture looking at the transfer case from the rear axle?...
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