Winter fronts
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Elder User
Joined: Apr 2010
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Winter fronts
This is my first diesel, so excuse the dumb question, but. At what temps is it ok to use a winter front? My concern would be overheating. I live in Buffalo so average winter temps teens and 20's with maybe a week of 0 or below at best. Mine is a daily driver so usually short trips.
Also has anyone found another cover other than the one Darren has?
Also has anyone found another cover other than the one Darren has?
Lead Driver
Joined: Apr 2011
Posts: 7,302
Likes: 1,153
From: Edmonton Alberta
I have had mine on up to at least 10C (50F). There are a couple of flaps you can open up if it's warm. But if the engine gets hot the fan can pull a lot of air from the hole in the bumper. I had had no issues.
Here is a pic of the Fia one.
Thanks
Here is a pic of the Fia one.
Thanks
Lead Driver
Joined: Apr 2011
Posts: 7,302
Likes: 1,153
From: Edmonton Alberta
None so far. I put mine on in Nov last year (because my dealer said I didn't need one!) but I left it in my friends shop over night so it was warm and the buttons glued on well. I thought they may come off when I pulled the cover off in the spring but they didn't, they are on there pretty good.
Thanks
Thanks
Logistics Pro
Joined: Oct 2010
Posts: 3,597
Likes: 63
From: Texas
It gets in the double digit negatives here and I have yet to plug this 6.7 in. The support block cab heater thingy majigy works great as well. A lot different than my 5.9 Cummins.
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Elder User
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I will start to plug it in when it gets a little colder. But the short trips I usually take don't give it much time to warm up. Was wondering if the cover would help with warm up time and also maybe improve fuel economy a little by getting the temp up where it likes to be. I do not have the supp heat.
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Senior User
Joined: Jun 2011
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From: Needles CA KOA
The job of the winter front is to help prevent the radiator from freezing from the possible below safe freezing levels of the antifreeze during the time the engine thermostat is closed. Dont see how the cover can affect warmup time since the radiator is out of the system during warm up. Best thing for warmup is the block heater(or a warm garage)
Senior User
Joined: Jun 2006
Posts: 125
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From: Battle Mountain NV
Fulltimer- are you sure about radiator being out of loop durring warm up, if it is the coolant temp would rise allot more than it does, and if so how does that work.
Anybody know if the fans are suppose to be thermostat controlled, they appear to be direct drive, mine appears to be spinning at all times.
Darren32- How does your cover attach to grill, I dont see any buttons/snaps on the outside of cover, looks sharp BTW. Appon further inspection by the wife with her glass's on I see the black snaps now. thx
Anybody know if the fans are suppose to be thermostat controlled, they appear to be direct drive, mine appears to be spinning at all times.
Darren32- How does your cover attach to grill, I dont see any buttons/snaps on the outside of cover, looks sharp BTW. Appon further inspection by the wife with her glass's on I see the black snaps now. thx
Lead Driver
Joined: Apr 2011
Posts: 7,302
Likes: 1,153
From: Edmonton Alberta
Fulltimer- are you sure about radiator being out of loop durring warm up, if it is the coolant temp would rise allot more than it does, and if so how does that work.
Anybody know if the fans are suppose to be thermostat controlled, they appear to be direct drive, mine appears to be spinning at all times.
Darren32- How does your cover attach to grill, I dont see any buttons/snaps on the outside of cover, looks sharp BTW. Appon further inspection by the wife with her glass's on I see the black snaps now. thx
Anybody know if the fans are suppose to be thermostat controlled, they appear to be direct drive, mine appears to be spinning at all times.
Darren32- How does your cover attach to grill, I dont see any buttons/snaps on the outside of cover, looks sharp BTW. Appon further inspection by the wife with her glass's on I see the black snaps now. thx
At start up the thermostat should be closed so little or no coolant should flow through the radiator. The fan is likely (almost certainly) a clutch fan so it would at least partially disengage and at the least spin slower at start up.
I am sure someone here will know for sure though.
I have been told that the winter front helps the vehicle warm up faster but I definately did not notice this. Like fulltimer says, I don't see how it would. The fan is spinning and it can pull all the air it like from the opening in the bumper regardless of the winter front.
uscg, the front uses glue on buttons that you have to stick on your nice shiny grille. You can see them (or maybe your wife LOL, just kiddin, I hear ya, my eyes aint what they used to be either!) in this pic (with the front off)
Thanks
Lead Driver
Joined: Apr 2011
Posts: 7,302
Likes: 1,153
From: Edmonton Alberta
Just had a thought.......
Although I don't think it would help the warm up time at idle. It may help the truck warm up faster when driving as it is mostly blocking the rad from the cold air that would otherwise go through the rad and enter the engine compartment????
Although I don't think it would help the warm up time at idle. It may help the truck warm up faster when driving as it is mostly blocking the rad from the cold air that would otherwise go through the rad and enter the engine compartment????
Postmaster
Joined: Aug 2006
Posts: 2,829
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Cooling fan operation on these trucks is a bit more complex then your traditional fan clutch. The 6.7L uses a VDF (Vistronic Drive Fan).
A viscous drive actuator valve controls fluid flow from a reservoir into a working chamber. Once viscous fluid is in the working chamber, shearing of the fluid results in fan rotation. The valve is controlled by a PWM (pulse width modulation) output signal from the PCM. By opening and closing the fluid port valve, the PCM controls the fan speed. Fan speed is measured through a Hall effect sensor and is monitored by the PCM during closed loop operation. The PCM optimizes the fan speed based on the engine coolant temperature, engine oil temperature, fuel rail temperature, transmission fluid temperature, intake air temperature, and air conditioning requirements. When an increased demand for fan speed is requested for vehicle cooling, the PCM monitors the fan speed through the Hall effect sensor. If a fan speed increase is required, the PCM outputs the PWM signal to the fluid port providing the required fan speed increase.
A viscous drive actuator valve controls fluid flow from a reservoir into a working chamber. Once viscous fluid is in the working chamber, shearing of the fluid results in fan rotation. The valve is controlled by a PWM (pulse width modulation) output signal from the PCM. By opening and closing the fluid port valve, the PCM controls the fan speed. Fan speed is measured through a Hall effect sensor and is monitored by the PCM during closed loop operation. The PCM optimizes the fan speed based on the engine coolant temperature, engine oil temperature, fuel rail temperature, transmission fluid temperature, intake air temperature, and air conditioning requirements. When an increased demand for fan speed is requested for vehicle cooling, the PCM monitors the fan speed through the Hall effect sensor. If a fan speed increase is required, the PCM outputs the PWM signal to the fluid port providing the required fan speed increase.
Lead Driver
Joined: Apr 2011
Posts: 7,302
Likes: 1,153
From: Edmonton Alberta
Cooling fan operation on these trucks is a bit more complex then your traditional fan clutch. The 6.7L uses a VDF (Vistronic Drive Fan).
A viscous drive actuator valve controls fluid flow from a reservoir into a working chamber. Once viscous fluid is in the working chamber, shearing of the fluid results in fan rotation. The valve is controlled by a PWM (pulse width modulation) output signal from the PCM. By opening and closing the fluid port valve, the PCM controls the fan speed. Fan speed is measured through a Hall effect sensor and is monitored by the PCM during closed loop operation. The PCM optimizes the fan speed based on the engine coolant temperature, engine oil temperature, fuel rail temperature, transmission fluid temperature, intake air temperature, and air conditioning requirements. When an increased demand for fan speed is requested for vehicle cooling, the PCM monitors the fan speed through the Hall effect sensor. If a fan speed increase is required, the PCM outputs the PWM signal to the fluid port providing the required fan speed increase.
A viscous drive actuator valve controls fluid flow from a reservoir into a working chamber. Once viscous fluid is in the working chamber, shearing of the fluid results in fan rotation. The valve is controlled by a PWM (pulse width modulation) output signal from the PCM. By opening and closing the fluid port valve, the PCM controls the fan speed. Fan speed is measured through a Hall effect sensor and is monitored by the PCM during closed loop operation. The PCM optimizes the fan speed based on the engine coolant temperature, engine oil temperature, fuel rail temperature, transmission fluid temperature, intake air temperature, and air conditioning requirements. When an increased demand for fan speed is requested for vehicle cooling, the PCM monitors the fan speed through the Hall effect sensor. If a fan speed increase is required, the PCM outputs the PWM signal to the fluid port providing the required fan speed increase.
Geeze, not much simple on these rigs.
If mine had a cig lighter I am sure it would be controlled by the PCM based on ambient temp, cab temp and brand for a perfect ignition and GOOD smokin'
Postmaster
Joined: Aug 2006
Posts: 2,829
Likes: 3
Your thought is on par. The primary purpose of a winter front is to reduce the amount of cold air being forced across the radiator and into the engine compartment while moving down the road. They provide very little effect while standing still. To provide full effect the gaping hole in the front bumper should be addressed as well...