For those of you who have put 14 bolts in TJ's. What have you set your pinion angle to when welding the spring cups on? Ive got a tf 999 with a 231 t/case w/ 5.5 springs.

Im trying to get the spring cups on without placing it under my jeep, since I still have an axle underthere and its my DD.

I found alot of good 14 bolt info using the search, but nobody gave their pinion angle away.

With a snout that long, I"m thinking 90* :flipoff2:

It really depends on how much lift you have and how it has settled, roll that big pig under there and measure it right, don't use someone else numbers. A buddy of mine has a 14-bolt in an Aluminum-tubbed CJ-7, with the axle moved back almost 2" it's still pointing way up there, of course he's running a TH350 and NP205, so that doesn't help.

Just flip it upside down, you'll get much better pinoin angle. :flipoff2:

It will be in the air. I agree with above you need to get it under there. You will screw it up trying to do it out of the vehicle.

Originally posted by Jeepin_NC
Im trying to get the spring cups on without placing it under my jeep

Not a good idea.

Thanks for the replies guys. Im just being lazy and trying to reduce the downtime of my DD as much as possible during this swap.

I guess Ill just have to drop it underthere and take it from there.

Originally posted by Jeepin_NC
Thanks for the replies guys. Im just being lazy and trying to reduce the downtime of my DD as much as possible during this swap.

I guess Ill just have to drop it underthere and take it from there.

Realistically you should be able to drop your axle and slide the 14 bolt in for fitting in one afternoon with a couple sets of jackstands and a floor jack. If you set aside one Saturday you should have it covered.

dont forget the driveshaft

remember..
if its a cv shaft : point it at the tcase
if its a std d-shaft then the pinion angle needs to be parrallel with the tcase output.

With a stock W/B and that long ass 14 bolt pinion your rear shafts only going to be around 14-15" long. Add to that a CV and you probally have driveline vibrations rolling it outta the garage. Put a fuel call in it and move the rearend back 8-10" That's what we did and it works great.

Im gonna hack up the tub and raise the tank half in the tub and half out and push that axle as far back as I can - hopefully get a whole 10". Then call up highangle and get a 1 ton CV made.

Originally posted by jeepguru7
Put a fuel call in it and move the rearend back 8-10" That's what we did and it works great.

Thats not a bad idea. What size fuel cell did you use, or what were the specs on the fuel cell?

We used a fuel cell from Summit Racing's catalog, 15 or 18 gals I can't remember. It sits where the back seat used to be, leaves plenty of room for a tool box and parts behind it. Have you been to one of the Dixie Run's, it was there for the last two years.

Originally posted by jeepguru7
We used a fuel cell from Summit Racing's catalog, 15 or 18 gals I can't remember. It sits where the back seat used to be, leaves plenty of room for a tool box and parts behind it. Have you been to one of the Dixie Run's, it was there for the last two years.

What did you do for fuel delivery? Internal or external pump and a regulator?

"What did you do for fuel delivery? Internal or external pump and a regulator?"

Yes, Inquiring minds want to know:D Also Can you still go through emissions with a fuel cell? I am wondering about the gas cap test. Also got any pics?

Originally posted by jeepguru7
With a stock W/B and that long ass 14 bolt pinion your rear shafts only going to be around 14-15" long. Add to that a CV and you probally have driveline vibrations rolling it outta the garage. Put a fuel call in it and move the rearend back 8-10" That's what we did and it works great.

I pushed my rear axle back 2.5" and have a long ass 14 bolt pinion. My rear shaft is 22" long. Where are you getting 14-15 :shaking:

My TJ has the axel pushed back 2" and with the Atlas I have a 24" DS. I have the TF999 as well. With the snout on that thing and the stock drivetrain he'll have a short shaft for sure. Move the axel back as far as you can or hange to t-case. I'm assuming he has a SYE already....I hope. I used a Toy rear axel. With no diff cover I was able to move the axel back with no tank mods.
Cord

External pump from Napa. Just tell them to pull at least 3 or 4 different ones and figure out what works for you. One diff is that the TJ had a swapped out carb'd 350. That makes it easy to find a pump. For a FI external pump try Howell.

Bigdude, 14-15" shaft? thats pretty close. Stock TJ w/ auto and D44 has a 16.5" rear driveshaft, now lose at least a couple inches from the 14 bolt pinion and there you go. Would be a lot longer with an Atlas or D300. Also TJ 231's have a slightly longer tailshaft housing than YJ's. I was just warning him b/c he had said nothing about wheelbase when I posted. With new info about him going back 8-10" there's not an issue.

Originally posted by jeepguru7
External pump from Napa. Just tell them to pull at least 3 or 4 different ones and figure out what works for you. One diff is that the TJ had a swapped out carb'd 350. That makes it easy to find a pump. For a FI external pump try Howell.

Bigdude, 14-15" shaft? thats pretty close. Stock TJ w/ auto and D44 has a 16.5" rear driveshaft, now lose at least a couple inches from the 14 bolt pinion and there you go. Would be a lot longer with an Atlas or D300. Also TJ 231's have a slightly longer tailshaft housing than YJ's. I was just warning him b/c he had said nothing about wheelbase when I posted. With new info about him going back 8-10" there's not an issue.

I thought TJs lost like 5"-6" with an SYE. That's where I was coming from.

Bigdude, Yeah thats right TJ's lose about 6" w/ a SYE, YJ's only lose about 4". But once the SYE is installed they're the same length. I would hope if he is putting a 14 bolt in the back he would at least have the SYE done. The 16.5" is the new length in a TJ auto/D44 w/ a SYE. What T-case do you have in your YJ. If it's a D300, they're about 4" shorter than a 231 w/ SYE. So with your W/B stretched a couple of inches your 22" shaft is about right.

Stock 16.5"
D300 20"
longer W/B 22"

Originally posted by jeepguru7
I would hope if he is putting a 14 bolt in the back he would at least have the SYE done.

Dude come on, sye is mandated... :flipoff2: Although I do still have the np231 :(

I have the tera HD short shaft now with the tera 4:1 and a toms woods shaft, I would like to upgrade to an atlas, but my wallet isnt allowing me to...hahaha. When I throw the 14 bolt in, im gonna get a 1-ton'r from highangle.

Im gonna try and stretch my wheelbase out as much as I can, if I have to Im gonna get out the roto zip and cut some comp. corners out. Whatever it takes :cool:

What are you doing for the front?

[QUOTE]Originally posted by BadAZYj
[B]"What did you do for fuel delivery? Internal or external pump and a regulator?"


F150 fuel rail is supposed to be the ticket, cheap, factory part and use a regulator there ya go....

You know he could do leafs out back :-)

Originally posted by GDGMOJO
[QUOTE]Originally posted by BadAZYj
[B]"What did you do for fuel delivery? Internal or external pump and a regulator?"


F150 fuel rail is supposed to be the ticket, cheap, factory part and use a regulator there ya go....

You know he could do leafs out back :-)

Interesting, so is there an I-6 F150 I dont know of? Or will the V8 one work? What year F150?

And yeah He should put leaves out back:D

Originally posted by BadAZYj


And yeah He should put leaves out back:D

That day will come.....

I am running a 60 in the rear of my tj and you don't have to get it right on because you can adjust it with the control arms. I set mine at around 25 deg, and that worked out good for me. Now if you are going to try to push it back 6" or so then you will have to make the control arms longer and then the angle will be less. If you are going to keep it around the same wheel base then 20 to 25 deg should work out fine. You can always do fine adjustments with the arms. I hope that helps.

Jeren

Originally posted by crawlinTJ
What are you doing for the front?

I got a dually hub HP Ford Dana 60 for the front. Im gonna run hummer wheels, they are getting sandblasted right now.

Originally posted by GDGMOJO
You know he could do leafs out back :-)

Im seriously thinking about putting leaves in the rear.

Do it! Goferit!
Cord

I really expected you to already have the SYE I just didn't know. What kind of wheeling are you going to be doing in this Jeep? You were mentioning putting leafs in the back, what is your final goal for this Jeep. IMO leafs are much more stable than coils, BUT won't offer as much flex and you'll need to address spring wrap. If all your after is max flex then go ahead with the coils and 3 link it, but if your planning on mostly trail riding and you want something simple, easy to work on, and stable on the trail use 44044's and just move the axle back a few inches like so many other people have on the board.

I guess the main thing I'm trying to say is decide what your looking for and do it, then live with it. It's better to wait and spend the money to do it the way you want it than it is just to get something in there to drive it and find out you don't like it later.

Originally posted by jeepguru7
I really expected you to already have the SYE I just didn't know. What kind of wheeling are you going to be doing in this Jeep? You were mentioning putting leafs in the back, what is your final goal for this Jeep. IMO leafs are much more stable than coils, BUT won't offer as much flex and you'll need to address spring wrap. If all your after is max flex then go ahead with the coils and 3 link it, but if your planning on mostly trail riding and you want something simple, easy to work on, and stable on the trail use 44044's and just move the axle back a few inches like so many other people have on the board.


My final goal is overall performance. I ride mostly tellico now and a few smaller places. Basically only rock crawling. I would like to get as much flex as possible, but right now, I have 'tire pick' syndrome and it is driving me crazy. I figure leafs would solve that. Im trying to find a viable solution to get flex and stability.

ahhhhhhhhh! throw that shit off a cliff....:flipoff2:

leafs..............:( oh man are you starting up with that shit again...hahahahah!;)

as far as a fuel cell thats my plan.slap in one with a electric internal pump which will hook right up to my existing wiring,slap it in the tub.and get some sway-aways coilovers from my boys at poly - performance.... run 42's and still drive 90/hr on the hywy.....