58frog, If you are saying that the transmission housing is cracked, then you are probably in deep doo-doo. Maybe nose high with a tsunami on the way.... I had a 4 speed housing on my TLB that had cracks repaired before I got it and they cracked again before I got it. There are special methods to weld cast, but they require specific heat treatment. Like you need to heat it to 800F or so and weld it at that temp, then raise the temp to 1200f and follow other crazy specific thermal profiles. Today it's done in a computer controlled over. The old guys used to build a large fire and put the casting in the coals for an hour to heat. Then quick weld it with Ni rod, heat it again in a fire up to a dull red, then bury it in hot sand with the coals on top for 48 hours of slow cool. Quotes I've gotten for fixing cast iron cracks are in the $150 to $200 per crack. That's for a clean bare degreased starting point. If they have to clean and degrease, add $100. The bad thing is that you may (and probably do) have many more cracks that are just smaller and hard to see. My casing had 2 large cracks, I fixed them - but about a dozen more appeared. After banging my head on that for too long, I found a used casing with no cracks for $75. Du'h! jb
|