Join Date: Dec 1999
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Re: M20 Welding tubes
it needs to be a BIG wire welder, clean the tube and the differential case with a grinder or wire brush until its shiney clean new metal, then spray it with brake cleaner.
weld a one inch bead, then switch to the other side and weld 1 inch, then drink a cold drink, then rotate the whole assemply and do it again.
basically you should end up with 4-5 1 inch welds around the tube/diff, spaced apart, and allowed to cool in betweeen.