Kenosha Warrior Posted February 25, 2007 Share Posted February 25, 2007 My friend and I are setting up a POS 1984 LTD (implanted 305 2bar th400 auto) as a derby car. Its got a Ford 9" and we're looking to throw *no* money into it. We need to lock the rear end and we're thinking welding it. Helpful instructions would be great, theres really no cause for safety, its going to be destroyed. Link to comment Share on other sites More sharing options...
feerocknok Posted February 25, 2007 Share Posted February 25, 2007 You can either just weld up the spider gears, or put a chunk of metal in there in weld it all up. The metal chunk is stronger. Just make a bunch of passes through the spider gears. The lincoln locker is as strong as the welders skills (to a point). Link to comment Share on other sites More sharing options...
Kenosha Warrior Posted February 25, 2007 Author Share Posted February 25, 2007 how far do you have to take the diff apart. Novice's doing this (not the welding, I'm pretty good at that) Link to comment Share on other sites More sharing options...
feerocknok Posted February 25, 2007 Share Posted February 25, 2007 how far do you have to take the diff apart. Novice's doing this (not the welding, I'm pretty good at that) You just have to pull the third member out. 9" and Toy axles are so nice to work with, but so you know, that 9" third could kill a man. Feels like 50 lbs. Lots of guys don't pull the spiders out of the third member to weld, but I would recommend it so the gear oil doesn't contaminate your welds. Link to comment Share on other sites More sharing options...
pingpong Posted February 28, 2007 Share Posted February 28, 2007 Just spray it down with some break cleaner, and use air to blow the residue and other crap out the way. I would use some 6013 or 6010 and burn it in good. Link to comment Share on other sites More sharing options...
DirtyComanche Posted February 28, 2007 Share Posted February 28, 2007 Yeah, just spray it with a good cleaner. I wouldn't worry about putting a peice of plate in there. You can though. Personally I'd use 7018. But it's not like it matters. The weld doesn't really have to be that strong. It just has to fill the teeth well enough. 7018 fills quicker - saves time. Besides, it's actually ment to be used on high strength steels. I know guys that welded theirs with stainless rod (Uh?), and others just used 6010/6011 or 6013 (the farmer's rods). Or 7014. Oh, coat the ring and pinion with grease if you're afraid of getting splatter on them. Link to comment Share on other sites More sharing options...
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