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Corvair Heater Hoses: Does Your Corvair Need them?

Updated on June 6, 2009

I was told by many corvair owners that the car runs fine without any of them. There are three large hoses located on Corvair the engine. However, I was certain that the Fresh Air Hose, the 3” hose that attaches from the firewall in the engine area to the engine, was needed to provide air to the engine. Not so. Many owners remove the hose and block that air coming from the engine which diverts the air to the engine heads for more cooling.

In reality, the air being sent from the engine via the hose through the hose actually goes to the heater and defroster, not the engine! Thus, there is myth that fresh air enters through the vents near the rear window and funneled to the engine via this hose. It looks logical, yet, if you remove the left wheel and follow this hose, you will see it attaches to the heater!

In sum, none of the heater hoses are required for the engine to run. They all support the heater and defroster. If your heater is kaput, do not worry about the hoses nor their condition. if you do not intend to operate the heater, removing the Fresh Air Hose and blocking it somehow will provide additional air to cool the air-cooled engine.


The Fresh Air hose is seen at the top of picture.
The Fresh Air hose is seen at the top of picture.


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    • nicomp profile image

      nicomp really 

      8 years ago from Ohio, USA

      10 thousand miles? I am jealous. Take good care of it.

    • perrya profile imageAUTHOR


      8 years ago

      Yes, I took the heater hoses off. The engine in my 66 Corsa only has 10k on it, rebuilt sometime ago and then stored. runs great-just a bit cold in the winter!

    • nicomp profile image

      nicomp really 

      8 years ago from Ohio, USA

      Disconnect the heater hose before stinky oil-soaked air from the engine compartment suffocates the passengers. ;)

      Some Corvairs came with gasoline-powered heaters, the others were miserable to drive in cold weather. I miss my '65 turbo coupe. What a great car, with all that weight in the back and nothing holding down the front wheels. Except the gas tank.


      I love the photo of your 140 with 4 carbs. I also noticed the crumbling deck lid gasket. The memories!


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