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General VW Discussion This is a place for General VW topics (the company, not your vehicle). General topics about a specific vehicle should be posted in the General TDI Dicussion Forum sections for that vehicle platform. A4, A3 & B4, B5, etc.

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Old December 14th, 2008, 02:39   #16
compu_85
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It makes less air flow over the engine. At those temps that's enough to cool it off.

-Jaso
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Old December 14th, 2008, 07:23   #17
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Quote:
Originally Posted by nokivasara
How does a bit of cardboard heat up the engine quicker? The t-stat is there for a reason



I have always used cardboard infront of the rad to prevent the coolant to feeze when driving at -30C...The coolant turns into slush and the flow decreases which further drops the temp of the coolant inside the radiator. When it gets bad enough the engine gets overheated because of the restricted flow of coolant through the rad.
Thatīs why I use it, not to heat up the engine quicker.
Your coolant should not be doing that Wrong coolant or wrong ratio?
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Old December 14th, 2008, 10:34   #18
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I cut up a plastic lawn sign and coated it with black duct tape, then put it behind the front grille. There's still space on either side for some circulation. Is it OK to cover parts of the bottom vent, and if so, how much?
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Old December 14th, 2008, 11:16   #19
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Quote:
Originally Posted by Bob_Fout
Your coolant should not be doing that Wrong coolant or wrong ratio?
No, but a 50-50 ratio is good down to -35C and if itīs colder it will freeze. 60-40 = -40C.
I donīt live upnorth anymore and havenīt used a grille cover for years, it only gets down to about -25C where I live now, summerlike temperatures
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Old December 14th, 2008, 11:19   #20
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Quote:
Originally Posted by compu_85
It makes less air flow over the engine. At those temps that's enough to cool it off.

-Jaso
And when it does that the thermostat closes and the engine temp increases, with or without the cover.

I donīt think itīs wrong to cover up the grille, but I donīt think itīll get up to temp faster. I might be wrong though.
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Old December 14th, 2008, 12:01   #21
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I said over the engine, not the radiator. There's got to be some direct cooling of air flowing over the engine itself.

-Jason
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Old December 14th, 2008, 16:32   #22
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The engine very noticeably warms up quicker with the winter front on, and also maintains the normal 184 to 186*F coolant temp vs. a few degrees cooler w/o it.
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Old December 15th, 2008, 00:10   #23
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Quote:
Originally Posted by Bob_Fout
The engine very noticeably warms up quicker with the winter front on, and also maintains the normal 184 to 186*F coolant temp vs. a few degrees cooler w/o it.
Mine is more than a few degrees colder without blocking the vents.
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Old December 15th, 2008, 07:06   #24
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Quote:
Originally Posted by Bob_Fout
Does this work alone or together with the genuine VW bra?
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Old December 15th, 2008, 08:49   #25
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Quote:
Originally Posted by TornadoRed
Does this work alone or together with the genuine VW bra?
Not sure TR. Later today I'll try and take pics of how they fit, might able to tell if they would interfere with the bra.
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Old December 16th, 2008, 18:18   #26
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I was considering replacing the radiator with a hose for the winter, the damn thing wont get warm when its like this. The last few days its been right around 0* to 5*F and it takes about 5 miles on the freeway to feel warm air come out of the vents, thats after about a 5 mile drive to the freeway. If I could plug it it wherever I go that wouldn't bother me much but the never getting warm thing gets old. At an average stop light I can have the gauge drop about halfway for coolant temperature, thats after a 20 mile trip on the freeway.

I have some black corrugated plastic that I was going to put in front of the radiator to see if it helps but cant find a good way to slip it in there.
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Old December 16th, 2008, 19:18   #27
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Cool

Well
I am going to order a winter front when I order oil for my next change.

In the meantime I just cut up some hard packaging foam into strips and put it in the slats of the grill leaving the VW emblem uncovered for a little air flow, and then wrapped the bumper grill in some bubble wrap. It makes a huge difference, before id have to run the car out on the highway to warm it up and then it be ice when I came back to town. Now it will usually holds about 120-140 in town and warms up completely on the highway(its been -10 to -20F the last three days). I wasnt able to get cardboard in without taking the front of the car apart so I looked around the bosses shop for anything else that would work.
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Old December 18th, 2008, 10:26   #28
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It is now between 0 degrees and 40 degrees F here now depending on weather conditions and nightime/daytime, so. . .

I just installed the "pipe insulation" method and I noticed an immediate positive difference. My engine warms up much quicker, my heater works far faster and does not decrease my coolant temps when driving at low speeds with the blower on high and my SVO fuel temperature increases far faster and stays hotter. In fact, it works so well I am going to keep a close eye on my coolant temps to make sure it does not work too well. Plus it all cost me about 6 bucks!
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Old December 18th, 2008, 11:55   #29
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I tried the foam pipe insulation fix and it did help a little by blocking the front grille slots, but coming home two nights ago my coolant temp never got above 180F according to my my "extra" temp sender. The dash of course said 190F but it wasn't... I just installed a flexible cutting board to cover half of my radiator to see what kind of numbers I get today. I popped the grille off, cut the mat in half, and installed it in two pieces as the core support members were in the way to use a full piece. I also noticed there was a lip at the bottom front of the condenser, so I set the bottom edge of the cutting board in there and "secured" the top edge in by using more of the foam insulation for spacers. The foam doesn't crack at -5F, so for right now, i'll see how it goes.

EDIT: The flexible cutting board really helped temp wise. I got 191F the other day after approx 30 minutes of driving. It stayed put, and wasn't affected by the rain.
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Old December 21st, 2008, 22:21   #30
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Quote:
Originally Posted by Steve-o
Two more thumbs up for the winter front. Makes all the difference in the world...
Same here, pretty good bang for the buck, and it does not look half bad.
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