[VooDoo]

I use 4047 filler on all al castings, many cyl heads etc.

BUT does anyone have experience on 4047 vs 4643 vs 4943 ? Cant get 4943 here in finland from our local suppliers. Need to order overseas if 4643 is better match on most castings

[MotoEngineering]

Hi I use 4043 on All castings Cylinder heads and Engine parts it's the silicone in the alloy that helps the weld to flow and tends to be shiny in comparison to 5356 which has magnesium.