tonexj
NAXJA Forum User
- Location
- windsor, ca
well i was thinkin these with a longer shackle would probably provide more arch than xj springs with a drop shackle, correct or no?
would mj rear springs lift an xj?
- Thread starter tonexj
- Start date
G.P_XJ
NAXJA Forum User
- Location
- Centennial, CO
the MJ leaf spring is actualy longer than an XJ's
codyyy
NAXJA Forum User
- Location
- San Diego, CA
From Rusty's website on their 4" MJ leaf springs:
"[FONT=Arial, Helvetica][SIZE=-1]These leaf springs are made specifically for the MJ Comanche. The MJ leaf springs go under the axle and are longer than the XJ Cherokee leaf springs that go over the axle. These are NOT made for an XJ and would probably give over 10" of lift if used on a Cherokee."
http://rustysoffroad.com/mm5/merchant.mvc?Screen=PROD&Product_Code=RC-LS450-MJ&Category_Code=Leaf
MJ leaf packs are longer than XJ packs and are SUA.
[/SIZE][/FONT]
"[FONT=Arial, Helvetica][SIZE=-1]These leaf springs are made specifically for the MJ Comanche. The MJ leaf springs go under the axle and are longer than the XJ Cherokee leaf springs that go over the axle. These are NOT made for an XJ and would probably give over 10" of lift if used on a Cherokee."
http://rustysoffroad.com/mm5/merchant.mvc?Screen=PROD&Product_Code=RC-LS450-MJ&Category_Code=Leaf
MJ leaf packs are longer than XJ packs and are SUA.
[/SIZE][/FONT]
- Location
- WA state
You can use an MJ pack, but you would want something like the HD offroad shackle relocation bracket to help with shackle angle and leaf arch.
- Location
- Bakersfield, CA
It would also move your axle back 2". The XJ springs are 52" long and the MJ springs are 57" long. They are 2" longer in front and 3" longer in back (I think I remember that correctly), which is why they would move the axle back if you used the stock front spring hanger.
I used an MJ main leaf, but I moved the front spring mount forward 2" and made my own boomerang shackle for the added length in the back.
I used an MJ main leaf, but I moved the front spring mount forward 2" and made my own boomerang shackle for the added length in the back.
great-white
NAXJA Forum User
- Location
- ware ma
wouldnt moving the axle back a few inches be good? ive noticed whenever you use a lift shackle it pushes the axle a lil forward an the tires arent centered in the wheel well any more
XJ-ARNIE
NAXJA Forum User
- Location
- Cary, Illinois
My opinion is moving It foward in an XJ is benificial. Not to much, but a little is much appreciated on the rocks. The XJ wheelbase, in my opinion, is just a tad to long. but like you said, lifting it with shackles and sometimes even new leaf packs, moves it foward, its just right. But on the original subject, I highly reccomend not using MJ leafs on a, XJ. I dont think that the gain in flex by having less of an arch in you springs is worth having more to caught on the rocks. But again, all of that is opinion based, and is most likely highly argueable.
- Location
- Bakersfield, CA
Don't get your point at all. We used to think that 100" wheelbase was ideal, but that was before we got used to 105-107" wheelbase. Shorter is not better. Also, on an XJ the tire hits the front of the wheelwell when tires get big with good flex, so again it's not good to have the axle forward any.
Also, the MJ pack has more arch, not less. Usually, a flatter pack flexes better than one with more arch, depending on a few factors. Maybe you just said that wrong.....
XJ-ARNIE
NAXJA Forum User
- Location
- Cary, Illinois
My jeep sits at about 102 give or take, and I like it right there, however Ive never had bigger than a 35'' tire under it. MY tires never hit the foward part of my wheel well. I figured an Mj pack would be flatter...cause of its length, my fault.
- Location
- Bakersfield, CA
The MJ pack has quite a bit more arch, because it's mounted spring under the axle.
- Location
- Camden, SC
Has anyone actually done this?
89eliminator
NAXJA Forum User
- Location
- Delphi, IN
well really it depends on what leaf pack you grab from a MJ. the 2wd pack is pretty flat. its when you get into the 4wd and MT leaf packs that the arch is more relevant.
IdahoEagle
NAXJA Forum User
- Location
- Boise Idaho
Even the "flat" MJ rear springs have more that double the arch of good XJ springs... The huge issue that people seem to be overlooking is that the MJ springs are 5" longer than XJs... if it were only a couple inches different it would be doable. But that much is way too much unless you are willing to run relocated spring and shackle hangers... Then you are still trying to use springs that have too much arch to make the suspension flex properly...
- Location
- Camden, SC
I would venture to say that is not so. With an HD shackle kit you should be able to handle it.
89eliminator
NAXJA Forum User
- Location
- Delphi, IN
what is a "good xj spring"?
and 2wd MJ springs flex pretty damned good in my opinion...
(and thats with the shock limiting articulation)
IdahoEagle
NAXJA Forum User
- Location
- Boise Idaho
the longer shackle kit would only take care of 2" maybe 3" of extra length, not 5". I have done many spring swaps and suspension conversions to several types of vehicles over the years. If you try taking care of more than that with just shackles you end up having too many ill effects to the handling versus benefits. At that point you would be much better off doing a JY style AAL or just buying new springs and calling it good.
IdahoEagle
NAXJA Forum User
- Location
- Boise Idaho
Don't get me wrong, MJs work very well. I currently own one. I know they flex pretty good. I'm just talking about using them in an XJ is more hassle than people that don't have a lot of fabrication skills and tools seem to think it is.
- Location
- Rainy side of Washington
IdahoEagle - that's why he was suggesting the HDoffroad shackle relocation brackets as well. You could definitely get a couple of inches of length out of those.
Anyone got a link about the 2wd vs 4wd and/or MT vs AT MJ springs? This is the first I've heard about it, and I've got a 2wd auto MJ I'm converting to a 4wd auto MJ, so it interests me greatly.
Anyone got a link about the 2wd vs 4wd and/or MT vs AT MJ springs? This is the first I've heard about it, and I've got a 2wd auto MJ I'm converting to a 4wd auto MJ, so it interests me greatly.
- Location
- Camden, SC
http://www.generalspringkc.com/images/custom/43414.gif
Years Description.................# Leaves........Width..Measures (A*B)...Spring Capacity
84-01 Cherokee XJ....................4..............2-1/2...23*28-5/8...............655
84-01 Cherokee XJ....................4..............2-1/2...23*28-5/8...............745
86-95 Comanche........................3/2...........2-1/2...26*31...................1500
http://www.generalspringkc.com/images/custom/43414.gif
Years....Description...........................................................# Leaves....Width..Measures (A*B)...Spring Capacity
86-95....Comanche rear - metric tonne spring.........................3/2.........2-1/2........26x 31...........1500
Years Description.......................# Leaves........Width..Measures (A*B)...Spring Capacity
80-96 F150 2WD.............................4/1...........2-1/2...25*31..................1850
80-96 F150 2WD.............................5/1...........2-1/2...25*31..................2450
My pack with the HD Shackle relocation bracket instaled but not welded. I went from a 51" Alcan spring to a 56" F150/Alcan Hybrid. I have not wheeled it and probably will not. I think it lost some lift but its hard to tell without the tires. I would like to tweak my idea some. So I'm off to search for another F150 spring pack.
So yes with the HD kit you could run MJ springs in an xj.
