fzs600 block hairline crack? 2003

[Deefer666]

Its Aluminium but I doubt that it can be welded without stripping the engine as TiG welding gets the metal very hot and likely to melt rubber seals and gaskets. I manages to get away with it on my FJ that needed some crash damage building up on the casings where the previous owner had bodged it with Chemi Metal  :wall

I would rebuild the engine on another set of crank cases if the weld is not possible.