|02-25-2012 11:19 AM|
|Ibuildembig||^^^^brought out the super old skool traction bar|
|02-25-2012 11:12 AM|
this type of traction bar will help plant the rear if the ride height is correct soft suspension in the rear is better I dont have enough height and too stiff springs on the rear but am am not having any wheel hop
|08-12-2011 10:05 PM|
|08-06-2011 11:34 PM|
|Ggg||In my case the Jeep is to high for the laws. Even if I put a set of 235/85/16 tires on it I'm 4" too high. I insure and license it because some outings I go on require insurance and valid license plates.|
|08-06-2011 11:38 AM|
|superduty_5.9||I love what you are planning but why tag and insure if you don't drive on the road? I would think it's a waste of an awesome machine (4BT-Jeep) to not run down the road whenever I felt like. There are probably hundreds of 4BT Jeeps out there but unfortunately most info is in forums. Most don't take the time or money to dedicate a site to just one thing.|
|08-05-2011 11:18 PM|
|Ggg||We used to use them with snow plow applications.|
|08-02-2011 05:20 PM|
1987-96 Wrangler YJ series heavy duty rear - 1080 load, 237 rate (measures 22-11/16 x 22-11/16, 6 leaf, 2-1/2" wide): General Spring offers leaf springs, coil springs, lift kits, leveling kits
1987-1996 Jeep Wrangler - Leaf Spring (Rear - 6 Leaves) - 97-567 | $113.29
Most Jeepers steer away from them, due to they're a little stiffer than we normally want. However, with the added weight it should be a wash.
|08-02-2011 02:47 PM|
|Ibuildembig||Factory 6 leaf fronts? Never seen any on a YJ....4 in front and 5 in rear all day long|
|08-02-2011 02:40 PM|
|Ggg||My rear springs are kinda soft in a general sense, but it may be my shocks. The Jeep rides very smooth on the road, but if I hit a dip in the road the rear seems to oscillate more than the front. Also when hill climbing the rear will start bouncing a lot when the wheels spin.|
|08-01-2011 09:50 PM|
When you said the rears are a little soft, were you referring to on or off-road?
|07-31-2011 06:02 PM|
Very good idea to do as much planning on paper as you can. You will not need a really low gear in low range, my stock 2.7:1 is plenty for my use. I have driven one that had a Rubi 4:1 and it was too much gear reduction.
I would recommend alloy axle shafts in your axles. To give you an idea of available torque I just broke my front D60 Detroit locker all to heck and the AX15/231 are fine, yes I run alloy shafts with drive slugs.
I think you will have no problem coming up with a front spring combination that will work nicely. For reference I ended up using 78-79 Bronco front springs, TJ rear springs, but I think the rears are a bit too soft.
|07-31-2011 04:41 PM|
Thanks for the links. I have a lot of reading to do.
|07-31-2011 03:56 PM|
I am the guy StinkyMud was talking about, here is a link to my build thread.
http://www.4btswaps.com/forum/showth...d-a-4bt-diesel There is a TON of info on swapping the 4bt into all sorts of chassis, just Google it.
By far the most informative site is http://www.4btswaps.com/forum/forum.php
There are a lot of Jeep swap threads on that site. Don't just limit your search to the YJ as the CJ and TJ frames are all close enough that a lot of the same info applies to the three of them.
Some things to consider before you get started are; intended use, transmission, tire size, driveline.
Some things that may influence your choices are; Legality, check with your state laws to be certain it will be legal, some areas this gets tricky. The 4bt weighs between 800#- 900# depending on accessories etc. The engine size requires some planning to avoid clearance issues. Intended use plays a big part in how the chassis is set up. Transmission choice can be an expensive decision to change. I initially went in the automatic trans route and later changed my mind to use the stock AX15/231 manual, the Cummins flywheel alone is a $800+ part. Driveline, I have seen the 4bt AX15/231 combo spit a D44 rear ARB out the housing.
As far as your gear ratios this all depends on your tire size and intended use. I run 37"-42" tires and 4.56 would be ideal, but I do not use it as a DD and it only highway speeds on rare occasion. If I were to drive mine at highway speeds than 4.11 would be the better choice considering my tire sizes.
|07-31-2011 11:01 AM|
|07-31-2011 01:59 AM|
Oh and no need to go with leafs in the front, just get some hd longer coils for the front. Between winches bumpers and other things many guys run close to the difference in weight.between the 4.0 and 3.9 and have no weight issue. 300lbs isnt that much..
|07-31-2011 01:33 AM|
|YJman||Holy crap. Your jeep is going to be unstoppable.|
|07-31-2011 12:15 AM|
|07-30-2011 11:19 PM|
Also, just got the axles. 2000 Explorer 8.8 for the rear. 4.56s, ARB locker
Currie Enterprises built to order Dana 44 for the front. 4.56s, ARB locker
|06-20-2011 06:20 AM|
A guy I wheel with has the 4BT hooked up to an AX15 in his TJ and I must say it is a BEAST!!!! Wish I had the know how to do this.. I'd love to go with a diesel.
Good luck with your project, you will be very happy when you're done, I'm sure!
|06-19-2011 08:42 PM|
|Driller||like idea of 4bt swap. on dieseltruckresource.com some have done the 3.3L swap, weighs 200lb less than 3.9L and uses ax15 trans. may be harder to find one of these engines but is working for these guys and good mileage...Driller|
|06-19-2011 07:20 PM|
|herbie||try cummins 4bt and deisel conversions forum|
|06-19-2011 11:42 AM|
|444||Will be very cool! I think your only real stumbling block will be the fact that a 4BT supposedly weighs as much as a big block v8!|
|06-19-2011 04:33 AM|
|firstresponder||Good luck with the build i know we will all be waiting to see the finished product!|
|06-18-2011 11:37 PM|
Check this thread out.
|06-18-2011 11:32 PM|
|MellowYellow89YJ||Not a lot of info out there really, you will become a major source of info for others if you do a full build thread. There has been a lot of talk, but few have actually done it. Keep us posted on your build! I love my 4.2, but love the idea of going diesel.|
|06-18-2011 09:55 PM|
Cummins 4BT turbo
Yippie, they just delivered my next winter project. Just signed for a new/reman Cummins 4bt at my place of business. Came with a spec tag, almost 130 HP and almost 300 FT/lbs of torque. If I didn't have so much Jeepin' to do this summer, the front end would already be off.
What I'm looking for are links for YJ swaps from 2.5L to the Cummins 4bt 3.9L turbo. PLEASE, and don't take this the wrong way, NO FORUM LINKS, PLEASE! I'm trying to gather information, not opinions. I really don't want to read through 600 post in a thread to find out that only 50 post are about the project.
As Joe Friday used to say in Dragnet "just the fact, ma'am" .