<VV> Ralphie is at it again....

[Bill Hubbell]

So, I am going to play Devil's advocate here and ask where you get the idea that the heater hoses need to be replaced every three years?  I don't disagree with giving them a visual inspection but why replace if they are still intact?

Likewise, please explain to me how you think exhaust gas, if expelled from a correctly installed and functional stock tailpipe, can be pulled forward into the heater system even IF there is a broken hose.  I concede this possibly *could* occur when the car is idling while stopped, if wind were blowing towards the front of the car, but highly unlikely when moving. 

Incidentally, if you have a properly functioning heater system the blower motor is rarely needed as the engine fan does a good job of pushing air through the system.  The blower is mostly needed for defrosting. 

That is my experience with a properly functioning 1964 stock system; your mileage may vary. 

Bill Hubbell

On May 13, 2013, at 6:03 PM, hallgrenn at aol.com wrote:

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> And that is the usually the real source of CO contamination--not the exhaust from the manifolds, but the surrounding air.  When the heater blower is pulling in air and the heater hoses are leaking then the surrounding, polluted air is sucked in.  As you said--replace the hoses first before you go into the exhaust system.
> 
> Bob
> 
> I think it is a good idea to replace the hoses on the heater about every 3 
> years. Some Corvair owners neglect this as it means getting under the car 
> (unless you have rotessarie)
> I consider it maintanence, much like looking at brake pads/shoes
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