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Operation Tips

Carb Icing....O-470
Author Last Post
Yes, O-470 engines make carb ice and so will O-520 conversions, been flying them for 34 years.

Other than the things already listed, if you intend to run partial to full carb heat, you need to have a calibrated carb air temp gauge so you know what you are doing. You may not be able to attain 80-90°F but if you can that is a good temp to run.

As far as additives, the red bottle of Heet which has isopropyl alcohol (instead of methanol in the yellow bottle) is the only de-ice product I know that has been approved for use in our airplanes. It is really only good for absorbing water and/or ice crystals out of the gas, not preventing carb ice. Carb ice is formed from water vapor in the air, not in the fuel.

Make sure the carb air heat flapper seals and shaft bearings are in good shape to get optimum carb heat. Busted up air boxes are common on these planes. If it needs rebuilding, send it to Atlee Dodge Aircraft Services in Anchorage. It will come back looking like new, $$$$$ but will be done right.
 
yes ,I had lots of ice problems with my 180 Cessna 53 model tried everything 
there's a number of things that cause the older 182 & 180s to make it ice up.
in the wintertime normal procedure on older 182 or 180s is run about a quarter of an inch of carb heat or as needed to keep the ice off.
 several things cause it ,a big cause  is cold air going around the carburetor (any holes in the cowling that will let cold in need to be sealed ,made it back to Factory design , 
two main places for holes in the front of the Cowling are your heat ducks to the muffler rubber seals and seal around the carb to airbox you have to close up the carb airbox to the cowling with a good seal so no air can come through the cowling except through the air filter helps to change your crossover tube (on your intake System  from left to right on the front of the engine ) to a diameter one like the 185 has or at least insulated it (can use pipe insulation) 
after I tried everything and everything helped a lot .
the main cause was Car gas I went to 100 octane and all my problems went away ,if everything else is right! 
I didn't need to run as much carb heat in Cruise but I always still had to run some carb heat 
the colder it gets the worse it gets..
 and if you think it's not making ice don't do anything ,
it will quit!




Sent from my iPhone

On Nov 9, 2017, at 11:29 AM, Dstone (stonemtn737@aol.com) <mailer@mail2.clubexpress.com> wrote:

Hello out there...
A friend of mine in Canada recently purchased a Cessna 182 with the Cont O-470 engine.  He is having very troublesome carb ice occurrences.   Are there any O-470 C180 operators out there with similar experience and any remedies, such as a anti ice fuel additive?
Thanks for your responses!
 
Hello out there...
A friend of mine in Canada recently purchased a Cessna 182 with the Cont O-470 engine.  He is having very troublesome carb ice occurrences.   Are there any O-470 C180 operators out there with similar experience and any remedies, such as a anti ice fuel additive?
Thanks for your responses!
 
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