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Re: Fan Vane - Should I be concerned?
Posted by: Timothy Shortle ()
Date: January 11, 2021 07:56AM

"deflashing the heads" is to remove all extra not needed material that actually restricts cooling air. Consider it more of a cooling system tune up. Probably one of the best things we can do for our air cooled engines. Time consuming but you only need to do it once. Do you carry a spare fan belt and the tools to change it?

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Re: Fan Vane - Should I be concerned?
Posted by: Spectre ()
Date: January 11, 2021 08:03AM

azdave Wrote:
-------------------------------------------------------
> That chip in the fan blade has probably been there for many years/miles. Change it when you get a chance but don't freak out about it. I've seen far worse still in service.

True, the break does not look fresh in that photo.

David Clamp


1965 Corsa convertible - 140 4spd/3.55/AM-FM

2013 Mustang GT convertible - 5.0, 6spd auto, Procharger i-1

2003 Miata SE - 6spd manual (wife's toy)

"Victory is mine!" - SG

Norman, OK

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Re: Fan Vane - Should I be concerned?
Posted by: isucorvair ()
Date: January 11, 2021 10:24AM

> azdave Wrote:
> -------------------------------------------------------
> > That chip in the fan blade has probably been there for many years/miles.


Things work, until they don't. The fan tends to fail catastrophically, and usually takes out lots of things with it.


If it were my car, I'd be pulling it apart.

Eric P.
DeWItt, IA

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Re: Fan Vane - Should I be concerned?
Posted by: gbullman ()
Date: January 11, 2021 10:58AM

I agree the chip does look like it has been there a while. I'm thinking for the cost and time involved and this is the season to do these sorts of things I'm going to replace it and the fan bearing.

Knowing me it will always be in the back of my mind and if it were to fail I'd really be kicking myself.

Thanks for all the feedback and advice.


Gary
1966 Corsa Convertible
Northern New Jersey


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Re: Fan Vane - Should I be concerned?
Posted by: corventure Dave ()
Date: January 12, 2021 11:10AM

I would recommend replacing the fan.
Spin the fan + bearing without the belt. Listen to the bearing with a mechanics stethoscope while spinning. If the bearing spins quiet, it does not need to be replaced right away. But then.... it's best to replace 50+ year old bearings
providing the replacement is good quality!

Corventure Dave

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Re: Fan Vane - Should I be concerned?
Posted by: joelsplace ()
Date: January 13, 2021 07:32AM

Top is after bottom is before. The before picture is a lot better than any I've seen. Take note of the air path right above the combustion chamber.

Joel
Northlake, TX
5 Ultravans, 114 Corvairs and counting...




Edited 1 time(s). Last edit at 01/13/2021 07:35AM by joelsplace.

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Re: Fan Vane - Should I be concerned?
Posted by: Timothy Shortle ()
Date: January 13, 2021 08:27AM

I used to think "deflashing" was a remedy thought up by a fellow Corvair enthusiast. Then I found the topic and procedure in the factory service manual.

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