comanche13 Posted November 26, 2008 Share Posted November 26, 2008 i was readding its good to buy something to make the unibody more stronger but i can only find xj ones where can i buy mj ones or can anyone give me a schematic? Link to comment Share on other sites More sharing options...
90eliminator Posted November 26, 2008 Share Posted November 26, 2008 Should be the same, but may need some minor trimming to adapt to MJ rails....Its just a piece of Angle with holes in it that you need to weld to. don't try it if your an amateur welder....very difficult and if you screw up you could burn through your unibody and ruin it.....Good Luck.. Link to comment Share on other sites More sharing options...
comanche13 Posted November 26, 2008 Author Share Posted November 26, 2008 well that is stpid welding to a unibody in the first place is stupid... iis it acually worth it to get these? Link to comment Share on other sites More sharing options...
Eagle Posted November 27, 2008 Share Posted November 27, 2008 well that is stpid welding to a unibody in the first place is stupid... iis it acually worth it to get these? No. Link to comment Share on other sites More sharing options...
comanche13 Posted November 27, 2008 Author Share Posted November 27, 2008 I WAS TOLD IF I don't GET THESE MY frame will twist and warp and my doors won't shut and other problems will strt to happen Link to comment Share on other sites More sharing options...
jbhill Posted November 27, 2008 Share Posted November 27, 2008 by who? unibodys technically are better then cab on frames... Link to comment Share on other sites More sharing options...
Eagle Posted November 27, 2008 Share Posted November 27, 2008 I WAS TOLD IF I don't GET THESE MY frame will twist and warp and my doors won't shut and other problems will strt to happen I have been told more than once that the moon is made of green cheese. More recently, I have read right here on the Internet that the United States never landed anyone on the moon, and that the space station doesn't exist because anyone going into space would be instantly killed by solar radiation. It MUST be true, because I read it on the Internet. I own multiple XJs and multiple MJs. I have wheeled both my primary 1988 XJ and my primary 1988 MJ. All doors still close. Take it for what it's worth. Link to comment Share on other sites More sharing options...
CWLONGSHOT Posted November 27, 2008 Share Posted November 27, 2008 XJ and MJ frames are slightly different, the MJ is already stiffer than the XJ. So MJ's don't really need it. A few of us have clad our frames in angle iron steel for stregnth dragging the frame over rocks. I also have my rock rails welded to the srane. I'm sure it stiffens up the frame but that wasn't the inicial intent. CW Link to comment Share on other sites More sharing options...
DirtyComanche Posted November 27, 2008 Share Posted November 27, 2008 I consider it a 'can of worms' topic. Actually, I'm starting to see worms regardless of where I look. My short answer is you won't need them. Link to comment Share on other sites More sharing options...
bigd44889 Posted November 27, 2008 Share Posted November 27, 2008 ok let go this route the guys on here no more about these trucks than the guys that built them we drive these becuse thay are light and flex if u stifiners on it u might as well buy an s10 and put salid axles under it Link to comment Share on other sites More sharing options...
aemsee Posted November 27, 2008 Share Posted November 27, 2008 ok let go this route the guys on here no more about these trucks than the guys that built them we drive these becuse thay are light and flex if u stifiners on it u might as well buy an s10 and put salid axles under it People on quaaludes should not type. :D . Trying to read texting speak gives me a headache :ack: Link to comment Share on other sites More sharing options...
Pete M Posted November 27, 2008 Share Posted November 27, 2008 It is certainly possible for XJs to develop cracks in the unibody that can cause problems. This usually takes an extreme amount of flexing over time (think rock crawlers), but has happened in lesser rigs too (pretty rare though). An MJ frame is waaaaay stronger than an XJ (designed to carry 2200 pounds after all) and I don't remember ever hearing of it developing crack anywhere but around the steering box (not due to flex, but due to the push-pull of the steering vs the track bar). I suggest a support similar to the C-rok brace or just a good strong bumper that hold the front frame rails together (like mine). Link to comment Share on other sites More sharing options...
ejndssn Posted November 27, 2008 Share Posted November 27, 2008 It is certainly possible for XJs to develop cracks in the unibody that can cause problems. This usually takes an extreme amount of flexing over time (think rock crawlers), but has happened in lesser rigs too (pretty rare though). An MJ frame is waaaaay stronger than an XJ (designed to carry 2200 pounds after all) and I don't remember ever hearing of it developing crack anywhere but around the steering box (not due to flex, but due to the push-pull of the steering vs the track bar). I suggest a support similar to the C-rok brace or just a good strong bumper that hold the front frame rails together (like mine). Pete i would think that a link to your pix may help him out some XJ and MJ frames are slightly different, the MJ is already stiffer than the XJ. So MJ's don't really need it. A few of us have clad our frames in angle iron steel for strength dragging the frame over rocks. I also have my rock rails welded to the frame. I'm sure it stiffens up the frame but that wasn't the initial intent. CW This also applies to here as well knowing that it was not the intent at least we could see what was done and those that are interested can copy and ask questions as they go along adding additional mod like what increase the vehicle weight as well for what a lil bit of reinforcing the frame for what amount of gain :dunno: :agree: Eagle, Pete and CW that these trucks are tough the way they have been built as long as mother nature does not take her toll on these wonderful machines and we do our part to keep them the way we like 'em. we all have questions and answers which helps us along with maintaining our beloved machines and that what make the efforts that you guys have put into this site make it what it is today thanks a bunch Link to comment Share on other sites More sharing options...
Pete M Posted November 27, 2008 Share Posted November 27, 2008 Notice how long the bumper brackets are. This is good for strength when extracting from the mud, as well as stiffening up the front end. The cracks I speak of happen in the frame between the steering box and the track bar bracket. Rick (xjs4ever) had that crack and after welding it up, made a brace that runs from the track bar bracket to the opposing side. I don't have any pictures of that on hand though. Link to comment Share on other sites More sharing options...
bigd44889 Posted November 27, 2008 Share Posted November 27, 2008 not on quaaluds just came off the road been up tucking all dy when i wrote that :rotf: Link to comment Share on other sites More sharing options...
pingpong Posted November 28, 2008 Share Posted November 28, 2008 As a jeep abuser.. Unless your rig has rust.. and lots of it you don't need stiffners, unless you want to prevent dents in your frame cause you wheel hard. There are a few places on the xj/mj that have the common problem of crackingespecially when exposed to bigger tires and lockers. As pointed out By Pete... the steering box area is prone to this. C-Rok and a few other companies make plates for this problem. Also as Far as I know.. no one makes a MJ frame stiffner, and the one for the XJ will not work. Link to comment Share on other sites More sharing options...
carnuck Posted November 28, 2008 Share Posted November 28, 2008 It will happen if you get airborn a lot! Link to comment Share on other sites More sharing options...
TNT Posted November 29, 2008 Share Posted November 29, 2008 I have templates for cutting out frame stiffening plates that run from the front bumper to the back of the cab. They are for a MJ and are for 3 sides of the frame. One is for the outside rail of the frame, one for the bottom rail and one for the inside frame rail. They also have templates that box the frame in the engine compartment. They aren't mine, but I will be making a copy. :chillin: I plan on making the templates that will complete the templates needed for plating for a SWB MJ to the rear of the frame. I might also plate the top of the frame from the cab back and inside the cab too. They are designed to be cut out of a sheet of 1/8'" steel. This is easily formed to the contours on the frame and are more then stong enough for any use. Lots of welding required. :brows: Link to comment Share on other sites More sharing options...
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