repair or replace cr250 magnesium cover

[ty4]

evening all. purchased an 85 model cr250 at ballarat swap that needs just a little tlc
bad corrosion in pump housing!!!
does anyone know effective repair?,or am told to use alloy cover off other model,problem is dont know which
one to get.
if someone has good cover 4sale pleasecall tony0438-023-948
cheers

[evo550]

Have a look at the "waterpump repair" thread in the tech help section.
That one's mine, I have done a temp repair with some "Quick steel" but am looking at isolating the system and using a 12volt pump.