cracked block

[keitherb]

I had a large 8 inch long crack along the top right side of my block on the 1929 John Deere d. Had it welded by an experienced welder buy I don't think he heated the block enough so now I am getting hairline cracks in the area of the weld. I can do additives to the radiator to plug the cracks but was wondering if any body has used any of the exterior applied products that might help seal as well as help keep the cast from moving quite so much when heating during the run time so as to avoid more cracking. Dont really know what to do. Any ideas.

 

[Phill Tibbetts]

I've seen a lot of cast iron welding jobs over my 81 years and also a lot of brazing jobs. Brazing always seems to be a better way to go. For one thing you don't have the sudden bursts of heat and cold. Just my opinion and it is free for whatever it is worth.

 

[keitherb]

Well too late now but thanks..

 

[tomturkey]

Were you there to see him pre-heat or not pre-heat the block? How much pre-heat should have been done???do you know???Whatever the outcome nows not the time to second guess your fix. Move on from here, you hired an "experienced welder" he did the job best he could. A lot of should ofs and could ofs and I'll never do that again when we repair old iron. move on gobble