Re: fire damage
I once bought an engine that was in a fire hot enough to take the temper out of the valve springs. No tension left. Springs on the valves that were open stayed at that height when removed. All I did was a typical valve and ring job (new springs, of course), put it in my car and left on a round trip from Arizona to New York. And drove it for several years after that. Did not need to rebore it. Did not need to mill the heads.
If a block doesn't get hot enough to melt, I don't think the metallurgy would be affected. Blocks are not heat treated at the foundary. Liquid iron is poured into the molds, allowed to cool, then machined and assembled.
|