Fan and housing (Aluminum??)

[kmhemi]

I have a 78sc 3.0 I took the fan and housing off to powdercoat them. The fan has a broken blade and the housing is cracked. They feel like aluminum but I heard some were magnesium. Are mine alum?? If so I can get them welded and the fan rebalanced.

[walt]

They are magnesium. I don't believe they can be repaired but mine has a pretty good size chip missing from one of the blades and it runs just fine. If you didn't have overheating problems it may not be an issue.

[kmhemi]

It does not overheat I was concerned about it being out of balance and causing the bearings to fail in the alternator.

[RickM]

I'm not thinking it's worth the risk of getting them welded. If having them powder coated some have stated that they should be heated to de-gas the mag before oating.

[Sonic dB]

Vertex is manufacturing and selling Aluminum fan housings...the price is high, but still cheaper than the oem ones. I hate to give any credit to PPs competitior, but they are doing aluminum ones...

[afterburn 549]

All I know is magnesium can be welded....I dont not think saftey is a concern.....everything around you is welded..if you xray it you will see the whole story (after weld job)