How to block your front grill with pipe insulation

Lensdude_com

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Joined
Oct 31, 2004
Location
Edmonton, AB
TDI
99.5 MK4 Jetta (ALH) "Betty" (sold), 2005 MK4 Jetta (BEW) "Stinky-Pete"
I keep 2/3 of my rad covered by coroplast when the temps are above 20C/70F and fully covered below 15C ...I cut 3 strips that are inserted one at a time through the lower center grille and fit directly against the radiator fins
 
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mr_y82

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Joined
May 19, 2013
Location
Western NC
TDI
Used to have... '11 Golf, 6-spd, 2-door
nice timing on the revival... I started reading previous comments and thanks to the date it took me a minute... deja vu! guess I will slap the thing on this winter even though we will probably be selling it back next summer...
 
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UhOh

Top Post Dawg
Joined
Dec 24, 2014
Location
PNW
TDI
2003 Golf GLS (2005 Mercedes E320 CDI)
Was working fine, until we got geese!:eek: Darn things, geese, have to peck and nibble at everything (I have a picture of our 1 1/2 dozen or so geese surrounding and pecking away at the daughter's wagon:D) After picking up the pieces of insulation, with divots, off the ground I gave up.:eek: Anyway, if you don't have geese, or other nibbling critters, I endorse this mod.
 
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csstevej

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Joined
Aug 12, 2004
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north nj
TDI
2001 golf tdi 4 door auto now a manual, mine, 2000 golf 2 door M/T son's,daughters 98 NB non-TDI 2.0, 2003 TDI NB for next daughter, head repaired and on road,glutton for punishment got another tdi 2001NB,another yellow tdi NB , added an 06 NB DSG
Lol just installed mine yesterday........I'd shoot the geese
 
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Mongler98

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Mar 23, 2011
Location
COLORADO (SE of Denver)
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98 Jetta TDI AHU 1.9L (944 TDI swap in progress) I moved so now i got nothing but an AHU in a garage on a pallet.
I took a bandit road sign and cut it to fit and slipped it between the AC and the RAD and held it in with a zip tie. ran fine all winder in -20 and 60*F no issues, they are free on the side of the road. dont feel bad for taking them, they are all illegal btw, you need a sign permit to put them up and no one ever does. i know, i have min taken down all the time and a phone call sent to the number that is on them all the time saying that i have to pay fines and stuff, lol
 
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ranger pete

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Joined
Jul 29, 2011
Location
connecticut
TDI
2011 JSW 6MT
I am the new owner of an '11 JSW MT. I am considering doing some level of grill block, but am concerned with my temp gauge.

I read somewhere that this gauge is more or less an idiot light. That being the case, I am worried that I could overheat it before the idiot gauge told me what was going on.


Would like to hear from those with experience with this.
 
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Fix_Until_Broke

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Joined
Aug 8, 2004
Location
Menomonee Falls, Wisconsin, USA
TDI
03 Jetta
In general - you can block the front completely and in "normal driving" you'll be fine - actual coolant temps won't move at all.

Now if you're pulling a trailer, up a hill, in death valley with the A/C on, you'll probably run into some troubles, but as long as you're just driving around - nothing to worry about.

If you have a scangauge or any kind of OBDII monitor that you can watch on your phone, you can verify for yourself and/or keep an eye on it.
 
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Judson

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Joined
Jan 18, 2001
Location
Cheyenne, WY
TDI
2001 Jetta
I cut cardboard into two “L” shaped pieces, then remove the grill (just need to pull out and maneuver out of the way).
Then I slip the pieces in, lower L part first, so they end up forward L and backwards L in front of the radiator.
You can use a measuring tape to determine width and height.
They essentially block most of the radiator and make a big difference and are reusable. They never get charred or burnt or damaged in any way.
 
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John Wesley Hardin

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Joined
Aug 28, 2022
Location
Rockport Texas
TDI
2003 VW Jetta 1.9 Diesel GLS , Five Speed Standard Shift
It's that time of the year again, when plummeting temperatures send us scrambling to dose our fuel and crank our seat heaters to 11. Ever wanted to block off part of your radiator to help your engine warm up faster? It's very easy to do and can help you get better fuel economy, perhaps lower engine wear but most importantly get heat to the passenger cabin faster. This is very easy & cheap, but I thought some of the less imaginative or mechanically inclined may benefit from some pictures. This was done on my 2006 MkIV Golf TDI.

Go to your local hardware store and buy 3 meters (9') of foam pipe insulation for 13mm (1/2") copper pipe (or 10mm iron pipe - pipe sizing is weird, but pipe threading is even weirder). I found it at my local Menards for the whopping sum of $1.64. Menards is a midwestern chain of giant hardware stores, kinda like Home Depot or Lowes, but without all the suck. The pipe insulation usually comes in 2 meter lengths (6') but for some bizarre reason, it was in a bag of four (4) one meter lengths. Whatever. It costs less than $2 total and more than you need.



Note that this is dark grey, which blends in better. Sometimes it is brown or black. It will still work fine. Don't worry. Have a homebrew. Also notice the package is half French. That's because this stuff was hecho-en-Canadia.

Take out a piece of it and notice there's a slit down one side. That's how you would put it around a pipe. And that's how you're going to put it on your grille. Open up the slit by running a finger down it:


Then slide it in place over a slat in your upper grille, and trim to length with your pocketknife:


Repeat three times, and the upper grille is done.


Give it all a nice push to get it settled in there.

Now do the same thing on the lower grille slats. Don't bother with the bottom-most as it doesn't actually go through.

But before you slide those in place, I like to cut some slits to match up with the vertical grille bits, shown below.


Those help it sit nice and far back into the grille openings and block out that awful cold air.

Do that for both lower grille slats and you're done, honkey.


It may seem a little flimsy but I've never had a piece become dislodged for any of the past 3 winters.

Enjoy!

scurvy
It's that time of the year again, when plummeting temperatures send us scrambling to dose our fuel and crank our seat heaters to 11. Ever wanted to block off part of your radiator to help your engine warm up faster? It's very easy to do and can help you get better fuel economy, perhaps lower engine wear but most importantly get heat to the passenger cabin faster. This is very easy & cheap, but I thought some of the less imaginative or mechanically inclined may benefit from some pictures. This was done on my 2006 MkIV Golf TDI.

Go to your local hardware store and buy 3 meters (9') of foam pipe insulation for 13mm (1/2") copper pipe (or 10mm iron pipe - pipe sizing is weird, but pipe threading is even weirder). I found it at my local Menards for the whopping sum of $1.64. Menards is a midwestern chain of giant hardware stores, kinda like Home Depot or Lowes, but without all the suck. The pipe insulation usually comes in 2 meter lengths (6') but for some bizarre reason, it was in a bag of four (4) one meter lengths. Whatever. It costs less than $2 total and more than you need.



Note that this is dark grey, which blends in better. Sometimes it is brown or black. It will still work fine. Don't worry. Have a homebrew. Also notice the package is half French. That's because this stuff was hecho-en-Canadia.

Take out a piece of it and notice there's a slit down one side. That's how you would put it around a pipe. And that's how you're going to put it on your grille. Open up the slit by running a finger down it:


Then slide it in place over a slat in your upper grille, and trim to length with your pocketknife:


Repeat three times, and the upper grille is done.


Give it all a nice push to get it settled in there.

Now do the same thing on the lower grille slats. Don't bother with the bottom-most as it doesn't actually go through.

But before you slide those in place, I like to cut some slits to match up with the vertical grille bits, shown below.


Those help it sit nice and far back into the grille openings and block out that awful cold air.

Do that for both lower grille slats and you're done, honkey.


It may seem a little flimsy but I've never had a piece become dislodged for any of the past 3 winters.

Enjoy!

scurvy
 
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John Wesley Hardin

Veteran Member
Joined
Aug 28, 2022
Location
Rockport Texas
TDI
2003 VW Jetta 1.9 Diesel GLS , Five Speed Standard Shift
It's that time of the year again, when plummeting temperatures send us scrambling to dose our fuel and crank our seat heaters to 11. Ever wanted to block off part of your radiator to help your engine warm up faster? It's very easy to do and can help you get better fuel economy, perhaps lower engine wear but most importantly get heat to the passenger cabin faster. This is very easy & cheap, but I thought some of the less imaginative or mechanically inclined may benefit from some pictures. This was done on my 2006 MkIV Golf TDI.

Go to your local hardware store and buy 3 meters (9') of foam pipe insulation for 13mm (1/2") copper pipe (or 10mm iron pipe - pipe sizing is weird, but pipe threading is even weirder). I found it at my local Menards for the whopping sum of $1.64. Menards is a midwestern chain of giant hardware stores, kinda like Home Depot or Lowes, but without all the suck. The pipe insulation usually comes in 2 meter lengths (6') but for some bizarre reason, it was in a bag of four (4) one meter lengths. Whatever. It costs less than $2 total and more than you need.



Note that this is dark grey, which blends in better. Sometimes it is brown or black. It will still work fine. Don't worry. Have a homebrew. Also notice the package is half French. That's because this stuff was hecho-en-Canadia.

Take out a piece of it and notice there's a slit down one side. That's how you would put it around a pipe. And that's how you're going to put it on your grille. Open up the slit by running a finger down it:


Then slide it in place over a slat in your upper grille, and trim to length with your pocketknife:


Repeat three times, and the upper grille is done.


Give it all a nice push to get it settled in there.

Now do the same thing on the lower grille slats. Don't bother with the bottom-most as it doesn't actually go through.

But before you slide those in place, I like to cut some slits to match up with the vertical grille bits, shown below.


Those help it sit nice and far back into the grille openings and block out that awful cold air.

Do that for both lower grille slats and you're done, honkey.


It may seem a little flimsy but I've never had a piece become dislodged for any of the past 3 winters.

Enjoy!

scurvy
 
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John Wesley Hardin

Veteran Member
Joined
Aug 28, 2022
Location
Rockport Texas
TDI
2003 VW Jetta 1.9 Diesel GLS , Five Speed Standard Shift
Thats what happens to me. I have a 35 mile trip one way to work. In winter here it does get down into the 20's believe it or not.
So Im freezing my ass off for about 20 minutes then I get some heat. Just about the time I start getting nice and toasty Ive arrived at work and have to shut it down . I think I will try this. Besides no one will notice anyways, the preferred method of repair in S. Texas is duct tape so who will care anyways? " South Texas Third World Living At Its Finest "
 
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P2B

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Joined
Jan 11, 2006
Location
Toronto & Muskoka, Canada
TDI
2002 Jetta, 2003 Jetta, 2003 Jetta Wagon
I tried it once and didn't notice a difference. If the engine hasn't reached operating temperature the thermostat hasn't opened and there's no coolant flowing through the radiator anyway.
 
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Chrisperro

Member
Joined
Oct 15, 2024
Location
Vancouver, Canada
TDI
2013 Golf
Bump for this coming winter.
Just did mine with pipe isolation ,7$ at Rona for 12 ft , just the bottom grill
Will see if warms faster tomorrow and update.

Update.
Definitely this morning the car warmed up faster. I will say 25% faster than usual.
The only issue that I see is the insulation getting wet. Is pretty much like a sponge.
 
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GP_RZ

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Joined
Mar 19, 2022
Location
Alliston, Ontario
TDI
2003 Jetta Wagon 5 speed
Going to get some pipe foam and try this out... I have 70 min commute each way, have been with low heat and was not fun in sub zero temps.
 
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