Fan Chipped - Usable?

[dennisv]

We have an original fan. Two of the blades have chips out of them. Is it trash?

[RS America]

Scrap Metal or this may happen https://www.flickr.com/photos/2010-2011_european_tour/albums/72157644084433382

I was at idle, just engaged when i heard a nasty clunk. Best News, I wasn't at speed when it broke. I've heard of Fans at speed Destroying the back end/ engine

Replace It, hang on garage wall.

[dennisv]

Originally Posted by RS America

Scrap Metal or this may happen https://www.flickr.com/photos/2010-2011_european_tour/albums/72157644084433382

I was at idle, just engaged when i heard a nasty clunk. Best News, I wasn't at speed when it broke. I've heard of Fans at speed Destroying the back end/ engine

Wow! That sucks.

Thanks for sharing some real world experience and photos.

[speednme1]

Originally Posted by dennisv

We have an original fan. Two of the blades have chips out of them. Is it trash?

It still useable

[mepstein]

Ben / MB911 fixes them. He welds mag, alum, etc. he’s done dozens if not more.

[porsche930dude]

I dont see how a chipped fan blade results in a sheered alternator shaft but do what you will.

[E Sully]

An out of balance fan can cause damage from vibration. If solid except for the chip it can be fixed and re-balanced.
The problem is if it has deeper corrosion. I can't really tell from the photos, it needs to be examined a bit closer. As you can see in this picture, sometimes magnesium corrodes too much to be fixed.

[stownsen914]

Welding a chip, done by a competent expert, and the fan in the last picture above, are very different things that should not be compared.

[NotStock]

This chip has been missing for over 20 years. I’ll let you know if the fan explodes and destroys my engine.


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[walt]

I have a similar size chip in one of my blades also. Also has never been an issue in 20+ years and can't sense any imbalance thru the rev range.

[speednme1]

Originally Posted by NotStock

This chip has been missing for over 20 years. I’ll let you know if the fan explodes and destroys my engine.


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Exactly my point.

[Showdown]

Just chip the opposite blade and you’re now balanced; all good!!

[smadsen]

Clean it up & have it crack checked. I don't think that chip will put it noticeably out of balance. Run it.

[nazir_the_ie]

Probably worth replacing in the near future. 🫣