mjeff87 Posted July 17, 2006 Share Posted July 17, 2006 I've been tryin to track down a looseness/thumping in the front end, and think I've finally found it. Seems like the driver side LCA mount is seperating on the bottom side. I couldn't find it because I've got gobs of undercoating (and mud) sprayed all over it :oops: Anyways, would there be any bad effects to the electrical system it if I get it welded? Pulling the battery is an obvious, but should I pull the ECU as well? I'll get a pic of it.....it's not that bad, but it's only gonna get worse if I don't do something to it. TIA, Jeff Link to comment Share on other sites More sharing options...
JOMJ87 Posted July 17, 2006 Share Posted July 17, 2006 I don't think there will be to many problems in the electrical system since i welded my tube doors up while they were on the truck and had no problems. As far as welding it in general the metal is pretty thin so you will have to be careful not to burn through it. You may want to add some metal to it like a piece of angle or a plate. Cole Link to comment Share on other sites More sharing options...
pingpong Posted July 17, 2006 Share Posted July 17, 2006 Jeff, it can be welded with a correct setup. The metal at the LCA mount is thicker then ppl give it credit for. I think with all the sandwiching it is close to 5/16-3/8. After you weld it back to the body, you might want to reenforce it with some more material. Link to comment Share on other sites More sharing options...
mjeff87 Posted July 17, 2006 Author Share Posted July 17, 2006 It's not actually seperating from the frame, but rather from itself. On the bottom corner where it's boxed. Kinda hard to describe, I'll snap a pic of it tonight and post it up. Jeff Link to comment Share on other sites More sharing options...
pingpong Posted July 17, 2006 Share Posted July 17, 2006 Are you talking about the back side, where the LCA adjuster bolts go through. If so I would get a piece on angle (or similar metal) and reapir it that way Link to comment Share on other sites More sharing options...
DirtyComanche Posted July 17, 2006 Share Posted July 17, 2006 You don't need to even pull the battery... I NEVER do for mine. Heck, I've welded on it while it's running. Link to comment Share on other sites More sharing options...
Pete M Posted July 17, 2006 Share Posted July 17, 2006 It is technically possible to damage the electrical componants and even non-electrical stuff when welding on a vehicle. The most important thing is to pay attention to where you hook up the ground cable so it's as close to the welding spot as possible and that the path of the electricity won't fry something in between. Link to comment Share on other sites More sharing options...
mjeff87 Posted July 17, 2006 Author Share Posted July 17, 2006 Are you talking about the back side, where the LCA adjuster bolts go through. If so I would get a piece on angle (or similar metal) and reapir it that way No, in the front. Imagine looking straight on at the mount, like |_| with the CA pointing toward you. It's seperating in the bottom inside corner :cry: You don't need to even pull the battery... yeah, but with my luck I'll end up esploding my pretty new yellow top :( Link to comment Share on other sites More sharing options...
sinnaevd Posted July 17, 2006 Share Posted July 17, 2006 well just be comfortable knowing that battery acid tastes kind of tangy....don't get addicted to it. i hear it dangerous lol Link to comment Share on other sites More sharing options...
pingpong Posted July 17, 2006 Share Posted July 17, 2006 That doesnt sound like it would be too hard to weld. Just remember preparation for a weld is just as important as the weld itself. Also the Mj frames are Galvanized metal, and it puts off some really toxic fumes when you weld on it, grind it, or cut it using heat Link to comment Share on other sites More sharing options...
sinnaevd Posted July 17, 2006 Share Posted July 17, 2006 GALVONIZED???? WHEN THE "EFF" DID THEY START DOING THIS IN VEHICLES??? or is ti simply a comanche thing??? is that to stop the rusting? Link to comment Share on other sites More sharing options...
mjeff87 Posted July 17, 2006 Author Share Posted July 17, 2006 well just be comfortable knowing that battery acid tastes kind of tangy....don't get addicted to it. i hear it dangerous lol I can't help but ask how you know that..... :rotf: Jeff Link to comment Share on other sites More sharing options...
pingpong Posted July 17, 2006 Share Posted July 17, 2006 GALVONIZED???? WHEN THE "EFF" DID THEY START DOING THIS IN VEHICLES??? or is ti simply a comanche thing??? is that to stop the rusting? I know my frame had a galvanized coating on it, and it burns a pretty green color and puts off real white whispy smoke when you burn it, or weld it. Link to comment Share on other sites More sharing options...
DirtyComanche Posted July 17, 2006 Share Posted July 17, 2006 It's a Jeep thing. It's not galvanized though, it's zinc plated. That's what galvanizing is -- zinc plating. Link to comment Share on other sites More sharing options...
Pete M Posted July 17, 2006 Share Posted July 17, 2006 Yes and no. Not everyplace or everything that's grounded on a 20 year old truck can handle the juice from a welder. And electricity has a tendency to"wander" sometimes. It doesn't necessarily follow a single path (especially if the main path is rusty). Link to comment Share on other sites More sharing options...
DirtyComanche Posted July 17, 2006 Share Posted July 17, 2006 If your electrical is okayish, it will only follow grounds... Otherwise you've already got electrical problems. Although, I guess with this crowd that'd be likely. Link to comment Share on other sites More sharing options...
Pete M Posted July 17, 2006 Share Posted July 17, 2006 It a brand new vehicle, yes it should thoretically follow the frame. But in an old rusty vehicle, it can go all over trying to find the path of least resistance. I know guys that have welded to their 4x4s and fried the computer or even caught a ground wire on fire. It doesn't take much to overload a tiny computer circuit. Think of a bolt of lightning. Most of it will follow a single path, but there are a lot of little branches that go off on their own. I always go with better safe than sorry. Link to comment Share on other sites More sharing options...
pingpong Posted July 17, 2006 Share Posted July 17, 2006 I have seen one person fry his Brand New S/S brake line cause his ground was on the frame, and he was welding on the axle :brows: it was a pretty site, cause he was fixing his broken spring perch on the side of the trail using some one premier power welder... it was kinda funny to wtach the guy almost crap himself when the line ruptured Link to comment Share on other sites More sharing options...
sinnaevd Posted July 17, 2006 Share Posted July 17, 2006 well just be comfortable knowing that battery acid tastes kind of tangy....don't get addicted to it. i hear it dangerous lol I can't help but ask how you know that..... :rotf: Jeff like you've never tried it...I can see why dogs like antifreeze as well. they don't lie when they say its super sweet. I would drink a lot of it if I wasn't stupid :brows: Link to comment Share on other sites More sharing options...
feerocknok Posted July 18, 2006 Share Posted July 18, 2006 Didn't realize there was zinc on the frame. That's some potent stuff. I was welding some galvanized metal and had a real hard time with it (cause I didn't grind it first maybe?), dunno what zinc's like to weld to. Link to comment Share on other sites More sharing options...
DirtyComanche Posted July 18, 2006 Share Posted July 18, 2006 It's just like galvanized, grind it off first. The only problem is that you can't grind the inside of the frame rails, which are also coated. Link to comment Share on other sites More sharing options...
mjeff87 Posted July 18, 2006 Author Share Posted July 18, 2006 This is the best pic I could get. See the slit of daylight shining thru? From the outside (you really can't see it): Image Not Found from underneath: Image Not Found Link to comment Share on other sites More sharing options...
pingpong Posted July 18, 2006 Share Posted July 18, 2006 Thats on the reinforcement side of the bracket. I would just clean it as best I could and run a bead over it, making sure you got good penetration, w/o burning through Link to comment Share on other sites More sharing options...
87manche Posted July 18, 2006 Share Posted July 18, 2006 thread hijack: What tires are those Jeff, I kinda like the tread. Link to comment Share on other sites More sharing options...
mjeff87 Posted July 18, 2006 Author Share Posted July 18, 2006 They're recaps More of a "winter" tread than an AT, they don't clean themselves very well (or as much as I'd like them to), but they're 6 ply sidewalls. Once I get the new axles underneath I'm stepping up to 31's. Probably gonna go 'caps again, too. I get them from a shop in Johnstown that does tractor tires, about $30 each. Jeff Link to comment Share on other sites More sharing options...
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