I live in a city that can be bitterly cold in Winter in Alberta.
I see a small number of passenger vehicles and
quite a few trucks that cover their front grills with a type
of cloth when the weather is very cold, minus -15 to minus-35 degrees
in winter. Obviously this must be to prevent the cold air
from being drawn through the radiator by the fan or even
if the fan is not pulling in cold air just the forward movement
of the vehicle drawing in cold air.
These cloth grill covers have a flap or flaps in the center that
you can open and close. I am interested in purchasing one
of these. Can the car overheat if the flap is closed for too long?
At what minus temperature can you keep the flap closed all
the time. At what minus temperature must you make sure that
the flap is open.
Thanks in advance
Hello fellow canadian,
What type of vehicle are you considering installing this on? I've used one
on a old ford truck in the past, with reasonable success, but if you are
putting it on a car, you should be aware that *many* cars get more cooling
air from underneath the bumper, rather then through the grill, so the
chances of overheating are slim, but so is the effectivness of the cover.
A cheap (and ugly) way to gauge the usefullness of one of these products is
to wire some cardboard in front of your grill for a day....
I'm near Chicago, and I see that all the time around here. I found it
much easier to find a piece of cardboard and cut it to the exact size
of the radiator, and slide it in directly in front of the radiator,
and strap it in place. Much nicer as it's not seen from the exterior.
Plus, it's much cheaper than the fabric covers. You can't beat free!
Also, I see trucks and buses using the covers (fully closed) up to
temps just below freezing so I doubt overheating is really an issue,
especially in the temps you guys are talking about!
i just came across this:
i think the cardboard trick would be less effective when inside the engine
compartment because it will just allow air to go around the cardboard and
into the engine compartment. the oem stuff seems to insulate and keep
warmer air inside, sort of like the difference between a windbreaker and a
winter jacket. also, coolant only flows through the radiator when the
thermostat opens up when the engine is warm.
apparently, this comes standard with the diesel motors. i always thought
the diesels produced more waste heat than gas engines, but this seems to
suggest the opposite. as to where you can get one, being a canadian, you
should know that you can get anything at the local canadian tire!
yofa - firstname.lastname@example.org
Diesel engines definitely produce less waste heat, at least at idle/lower
engine speeds.. for example, around here during the colder days of the
winter, drivers of the old GM transit buses will be revving the engine up
high when they're parked at the terminal to get more heat..
Robert Hancock Saskatoon, SK, Canada
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