Thinking about switching to Narrow Track?

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Jeffsj
Posts: 132
Joined: Wed Sep 14, 2011 8:26 am
Location: Prescott, Az.

Thinking about switching to Narrow Track?

Post by Jeffsj »

Hey everyone, just want to pick your brains for a minute here. I am elbows deep in my Spring Over Axle swap and shackle flip and at the same time I am trying to come up with a solution to my need for a centered rear diff. to go with my 5.3/4l60e/NP241c setup. I had found a 12 bolt Chevy axle that was only going to be 2 inches wider than the factory wide track. I thought I was sitting pretty until I opened it up and found 2 chewed up teeth on the spider gears and the carrier's gear race on the driver's side is scored pretty badly. Believe it or not, it's pretty tough to find parts for the 12 bolt truck rear end. I did find a carrier and spider gears, but it was gonna set me back almost 5 bills and I still need bearings and seals! :banghead: Soooooo, I was at the Junk Yard today and found a 10 bolt Chevy axle, but for some reason it is 3 inches wider than the 12 bolt I have. I was told the 12 bolt I have was out of an 82 Chevy truck, but every axle I measured today was 3 inches wider. That is just too much sticking out to look good and it will just throw more mud all over the side of the Jeep than I already have.

Now, working on getting to my real question here; I found an 87 Grand Wagoneer Narrow track at the yard that had a centered Dana 44 in the rear. I would love to stay all Dana 44 and the ease of the install would be near heavenly, but slapping a Narrow Track on the rear with the Wide Track front would look a bit ridiculous. Well, it just happens that at the same yard was a 79 Wagoneer Narrow Track that also still had it's front axle. I believe I may need to swap some gears, because I am betting the Wagoneer has the 3.54's like my Cherokee and I saw the tag on the 87 that said it had 3.31's. My question is if switching my wide track to a narrow would be a smart move, or would it create issues? I'm thinking it might actually look better, due to the fact that I had cut off my flares, due to rust, so the front tires really stick out. My main concern would be if I had any tire to spring clearance issues with the SOA/shackle flip and 35" tires? I would also, obviously need all the steering components from the donor. What really sucks about all this, is that I already finished the SOA kit from Tad on the wide track! :banghead:
Jeff

Beast : 1979 Cherokee Chief
Engine : 2003 GMC 5.3 liter Vortec
Trans. : 2002 4L60e / Transfer Case : 1989 NP241C with Slip-yoke eliminator
Lift : 4" / Tires : 33/12.50./15 BFG KM2's
Dakota Digital dashboard cluster

My 5.3 swap thread:
http://fsjnetwork.com/forum/viewtopic.php?f=12&t=767
Video: http://www.youtube.com/watch?v=XrqX1ip2KkM
Tad's SOA/Shackle Flip installation: http://fsjnetwork.com/forum/viewtopic.php?f=13&t=3347
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Stuka
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Re: Thinking about switching to Narrow Track?

Post by Stuka »

3" wider than your stock rear axle? That would make it close to what a J10 rear axle is, which is wider than a WT Cherokee rear axle. It wont stick outside the flares, as your stock rear axle has the tires sucked in quite a bit.

NT Axles on a WT look goofy. Your tires will be sucked way inside, and you will then run into the issue of your front tires rubbing your springs when you turn.

But for what its worth, you do know you can use your stock rear axle with your centered output t-case right? WT Cherokee's used the same rear axle for QT and D20 equipped rigs. The u-joints will work fine.
2017 JKU Rubicon
Pevious Jeeps: 1981 J10, 1975 Cherokee, 2008 JK, 2005 KJ, 1989 XJ
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jaber
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Location: Chino Valley, Az.

Re: Thinking about switching to Narrow Track?

Post by jaber »

Hey Jeff.

I have been running an offset rear with a D-20 T-case for several years now and it has been awesome. I dont have any vibes and u-joints are holding up great behind the Caddy power and my lead foot.

I dont work in PV, I'm in S. Chino now @ Affordable Auto Repair. If I can help any, give me a holler. I'm home all day today... :-bd
Jeff

'46 cj3a
'51 Willys p/u
'51 Willys Parkway Conversion
'74 CJ5
'75 J-20 Wrecker
'75 J-20 Cummins service truck
'77 J-10 p/u
'79 Cherokee
'88 Grand Wagoneer
http://s252.photobucket.com/albums/hh14/jeffaber/
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Jeffsj
Posts: 132
Joined: Wed Sep 14, 2011 8:26 am
Location: Prescott, Az.

Re: Thinking about switching to Narrow Track?

Post by Jeffsj »

Thanks guys. The thing I'm concerned about is the drive shaft angle with my S.O.A. / shackle flip setup I'm working on. I figure it will be at about 16 degrees. That seems a bit extreme for the u-joints, with no CV? The shaft I have now is CV and it had a pretty bad vibration because of the offset. I could have a shaft with no CV built, but I'm afraid I will eat up u-joints because of the high angle. Thanks for the help offer Jeff! I just want to get this thing back on the road and trouble free. :fsj:
Jeff

Beast : 1979 Cherokee Chief
Engine : 2003 GMC 5.3 liter Vortec
Trans. : 2002 4L60e / Transfer Case : 1989 NP241C with Slip-yoke eliminator
Lift : 4" / Tires : 33/12.50./15 BFG KM2's
Dakota Digital dashboard cluster

My 5.3 swap thread:
http://fsjnetwork.com/forum/viewtopic.php?f=12&t=767
Video: http://www.youtube.com/watch?v=XrqX1ip2KkM
Tad's SOA/Shackle Flip installation: http://fsjnetwork.com/forum/viewtopic.php?f=13&t=3347
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jaber
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Joined: Sat Aug 27, 2011 5:24 pm
Location: Chino Valley, Az.

Re: Thinking about switching to Narrow Track?

Post by jaber »

I'm sure you've seen the 14 bolt on CL? I dont know your feelings on 3/4 ton axles, but it sounds like a good deal. Might be something to look at.
Jeff

'46 cj3a
'51 Willys p/u
'51 Willys Parkway Conversion
'74 CJ5
'75 J-20 Wrecker
'75 J-20 Cummins service truck
'77 J-10 p/u
'79 Cherokee
'88 Grand Wagoneer
http://s252.photobucket.com/albums/hh14/jeffaber/
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Stuka
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Re: Thinking about switching to Narrow Track?

Post by Stuka »

Jeffsj wrote:Thanks guys. The thing I'm concerned about is the drive shaft angle with my S.O.A. / shackle flip setup I'm working on. I figure it will be at about 16 degrees. That seems a bit extreme for the u-joints, with no CV? The shaft I have now is CV and it had a pretty bad vibration because of the offset. I could have a shaft with no CV built, but I'm afraid I will eat up u-joints because of the high angle. Thanks for the help offer Jeff! I just want to get this thing back on the road and trouble free. :fsj:
You had a rear shaft with a single CV? Was the CV on the t-case side, and did you point the rear diff up so that it was inline with the drive shaft? You should not have any vibes. Plenty of guys with manual transmissions with SOA's and no issues.
2017 JKU Rubicon
Pevious Jeeps: 1981 J10, 1975 Cherokee, 2008 JK, 2005 KJ, 1989 XJ
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Topic author
Jeffsj
Posts: 132
Joined: Wed Sep 14, 2011 8:26 am
Location: Prescott, Az.

Re: Thinking about switching to Narrow Track?

Post by Jeffsj »

Yes, it was a single CV on the t-case side and I did shim the axle to get the proper pinion angle. I have been told that the compound angle is fine for a u-joint, but the CV is not designed for that. I do think one of the issues on mine is that the rear shaft is pretty short. I don't know how it compares to the length on a manual tranny.
Jeff

Beast : 1979 Cherokee Chief
Engine : 2003 GMC 5.3 liter Vortec
Trans. : 2002 4L60e / Transfer Case : 1989 NP241C with Slip-yoke eliminator
Lift : 4" / Tires : 33/12.50./15 BFG KM2's
Dakota Digital dashboard cluster

My 5.3 swap thread:
http://fsjnetwork.com/forum/viewtopic.php?f=12&t=767
Video: http://www.youtube.com/watch?v=XrqX1ip2KkM
Tad's SOA/Shackle Flip installation: http://fsjnetwork.com/forum/viewtopic.php?f=13&t=3347

jamesdart
Posts: 384
Joined: Tue Dec 25, 2012 4:49 pm

Re: Thinking about switching to Narrow Track?

Post by jamesdart »

im running a narrowtrack offset 44 with a 700r4 and centered dana 300. I had a new 3" shaft built with spicer 1310 joints. its fine. I cruise the highway about 72, no vibes.
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Topic author
Jeffsj
Posts: 132
Joined: Wed Sep 14, 2011 8:26 am
Location: Prescott, Az.

Re: Thinking about switching to Narrow Track?

Post by Jeffsj »

jaber wrote:I'm sure you've seen the 14 bolt on CL? I dont know your feelings on 3/4 ton axles, but it sounds like a good deal. Might be something to look at.
Hey Jeff, I don't know how I missed your response here, but I did see the 14 bolt on CL. The problem is that it is also too wide for the Jeep. I really don't want to stick out any more than maybe another 2 inches or so. Thanks for the thought though!
Jeff

Beast : 1979 Cherokee Chief
Engine : 2003 GMC 5.3 liter Vortec
Trans. : 2002 4L60e / Transfer Case : 1989 NP241C with Slip-yoke eliminator
Lift : 4" / Tires : 33/12.50./15 BFG KM2's
Dakota Digital dashboard cluster

My 5.3 swap thread:
http://fsjnetwork.com/forum/viewtopic.php?f=12&t=767
Video: http://www.youtube.com/watch?v=XrqX1ip2KkM
Tad's SOA/Shackle Flip installation: http://fsjnetwork.com/forum/viewtopic.php?f=13&t=3347
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