Join Date: Aug 2000
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Re: Welding the Diff
Do a search for Welded diff or lincon locker or somthing, i remember this was discussed a few times, with good info.
First, did you get it professionally welded or did you do it youself? Was it done with a arc welder or a wirefeed?
When i got mine welded, it was done by a professional. BEfore welding i obtained 4 bolts. When you take the top part of the carrier off and the top side gear (so now the spider gears are exposed) you can shove these bolts down in between the spideer gears (so the threaded part goes down first). The head (if you got the right size bolt) will fit good between 2 teeth on 2 of the spider gears, so this will jam it from moving. These are then welded to the spidergears. BTW the bolts were some grade 8 standard bolts.
He also welded in some other places, welding the spider gears to the carrier itself. And i think he welded the spiders to the little spacer in the center and the spacer to the pins. This is not nessessary. I dont like the idea of welding the pins and spacer and carrier but he did it without telling me.
You really only need to weld the spider gears with the bolts, even if the welds break it will still stay locked, my friend's broke once with the bolts and he didnt even know until he took it apart one day.
Ive had my rear diff welded for over a year now i think, and i havent had problems. Do not weld the front diff.
Make sure you clean all the grease and oil off the gears before welding, take it to a pressure washer. And you can take thoes little washers that go between the spider gears and the carrier out, there not important, incase you need them for somthing else or sotmhign.