A close-up of TIG welding on a cast iron engine block, with a glowing arc and filler rod guided by gloved hands in a workshop setting.

How to TIG Weld a Cast Iron Engine Block Without Cracks

ByWelderology Team

Welding cast iron—especially when it’s something as important as an engine block—takes patience, the right filler, and careful prep. It’s not your everyday welding job, but with the right steps, TIG welding cast iron is totally possible, even in a home garage or small shop. Whether you’re fixing a cracked block on an older vehicle…