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Unread 01-17-2011, 08:57 PM   #1
BurmaJack
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2008 WK 
 
Join Date: Dec 2010
Location: , Alberta, Canada
Posts: 489
WK CRD Cabin Heat Boost

So today I decided to do something about the poor cabin heat in sub-freezing temperatures in my 08 WK CRD. Decided to go one step beyond the old "cr*ppy cardboard on the grille - or some kind of over-priced vehicle lingerie.

Tools: Ruler, scissors, black electrical tape.

I went to Home Depot and bought 2x 6-foot lengths of pipe insulation, 7/8 I.D. x 3/8 wall thk. It is a black foam with adhesive tape.



I cut 12 pcs, 8'' in length. After reinforcing the longitudinal edges with black tape/included adhesive, I made a 1'' slot on each side of the piece (to accomodate the small guage rods running across the grille at top and bottom)
Top: 1 7/8" from end, Bottom 2 3/8" from end.


I then wrapped each piece around two slats in the grille, making sure the slots and ends beyond the slots were tucked in fully with a nice snug fit.



There is an approx 3/8 gap between pieces when installed, allowing for some air-flow, some pcs can be removed if the temp guage goes beyond 12 O'Clock.

There are seven "panels" on the 08 WK grille. I installed 2 pcs in each of six panels, starting from driver side. I left the far passenger side panel open, that is where the air intake is on the CRD - gotta let that baby breathe!



We have had -20C to -28C here in Alberta this past ten days or so(for you using imperial, water freezes at 0C), but is supposed to warm up to -7C in the next 24 hrs. I may have to remove a piece or two to let some air in, but it will get cold again - garenteed! I will make my observations and report back with my findings.

OH CANADA! Out

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Unread 01-18-2011, 01:11 AM   #2
Dr. Internet
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Location: San Antonio, Republica de Tejas
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BurmaJack,

Great solution!! I've never seen that done before. It's cheap, easy to do, anyone can install / remove it, and it can be used over and over again. How well does it work?
Those things are begging to have something painted on them...

It's good to see practical engineering is still alive.

(I'm glad I will never need them.)
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Unread 01-18-2011, 01:29 AM   #3
fatfreddy
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2008 WK 
 
Join Date: Nov 2006
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I had a weather front made for my diesel that covers the whole grill and all it did was allow the motor to warm up a little faster.Didn't make much differance helping the interior warm up faster.Such a big area to heat.It also dropped my fuel milage by 4 miles per gallon because the turbo air intercooler wasn't cooling the engine intake air as good.So I cut a slot along the bottom of the weather front to let air into the bottom side of the grill for the intercooler and the fuel milage went up 2 mpg.I had a small sqare hole in it for the air intake for the air cleaner.I am thinking becase the weather front is on there isn't the air presure in front of the grill that helps force air into the air cleaner intake which also contibuted to the lower fuel milage.I cut the spoon looking thing off the tube that goes into the air cleaner box at an angle to make work more like ram air which helped fuel milage a little bit.So I stopped using it.After you have run your weather front let us know the results on fuel milage and if the cabin heats up any quicker.
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Unread 01-18-2011, 02:13 AM   #4
BurmaJack
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Thanks for the support! The other day I saw a WK with a cardboard box strapped to the grille and though I was sort of envying the benefit, it looked unbecoming and IMO makes a bad statement. Secondly, I refuse to buy one of those 'bras' that cover the front like something a pontiac fiero would wear.

I will be keeping an eye on the temp guages well as any SUBSTANTIAL change in fuel mileage. Given the climate, it's basically cr*p right now anyway due to warm up time, deep snow, and never mind plugging her in all night - holy power bill!

So its -21C right now with wind chill at -27. I am hoping to achieve a warm up temp equal to two remote start cycles in just one (with fan left on high, on dash vent recirc.). then when I take her out, I'm hoping for no interior window ice at 50% fan setting, with def/floor split. If I can achieve that I will be happy.

Check back
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Unread 01-18-2011, 07:59 AM   #5
NDSU_Bison
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That brings back memories of living in North Dakota and northern Minnesota where cardboard boxes on grills were common in the winter. Your setup looks pretty slick!
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Unread 01-18-2011, 09:19 AM   #6
Spider-One
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Aside from just the initial warm-up when I was driving the WK a lot it needed a winter front mostly on the highway. I just used a piece of cardboard painted black and ziptied it just behind the grill. At -45*C it would barely get the temp gauge moving let alone keep a decent temp in the cabin, the cardboard behind the grill made a world of difference and I could see no noticeable difference in mileage except the usual winter blend losses. A must if you live in a colder area, personally I'd prefer the painted cardboard to this, you could never tell with it painted and it would last all winter.
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Unread 01-18-2011, 09:34 AM   #7
Megaman7
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It was -33 here this morning in Winterpeg. Took forever to warm up, and I still needed the credit card to scrape my drivers window on the drive to work. If this works I might try it.
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Unread 01-18-2011, 11:19 AM   #8
nostaw22
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I would think you'd get better results if you insulated the engine coolant hoses which run from the block to the firewall / heater core. Usually the coolant for the cabin heat is diverted from the block before the thermostat so you can get heat earlier. The hose runs frome the block to the firewall are probably where you lose the heat in the engine compartment the most...

JW
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Unread 01-18-2011, 11:41 AM   #9
BurmaJack
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Quote:
Originally Posted by nostaw22 View Post
I would think you'd get better results if you insulated the engine coolant hoses which run from the block to the firewall / heater core. Usually the coolant for the cabin heat is diverted from the block before the thermostat so you can get heat earlier. The hose runs frome the block to the firewall are probably where you lose the heat in the engine compartment the most...

JW
Hey JW thats a great idea! I have a four foot length of insulation left, when I get out there I'll have a look for the hose and take a measurement!

I woke up this morning to -8C. I am a bit peeved that I waited so long to do this, now I'll have to wait till the temp drops to below -20C to put it to the test.

But winter is far from over
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Unread 01-18-2011, 01:02 PM   #10
nostaw22
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Quote:
Originally Posted by BurmaJack View Post
Hey JW thats a great idea! I have a four foot length of insulation left, when I get out there I'll have a look for the hose and take a measurement!
Just be careful where you put the pipe insulation... Make sure it isn't against something like the exhaust or turbo so it won't melt / burn.

There is usually one supply line and a return line... The only one which needs insulation is the supply line. The way I figured out which one is which in the past is to start the engine (while cold), turn on the heat, and feel for which hose gets hot first. I never had to insulate them though.

Good luck...

JW
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Unread 01-18-2011, 01:32 PM   #11
fred99x
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I had the dealer install this grill insert (top and bottom) and it stays on year round without any temperature problems. I do remove three of the grill inserts when I pull my trailer. Very easy to remove if required. See post #15.
http://www.jeepforum.com/forum/f67/a...laredo-671536/
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Unread 01-18-2011, 01:51 PM   #12
BurmaJack
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Looks great! I want to eventually install the overland mesh behind the grille. Do those inserts come in flat black?
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Unread 01-18-2011, 02:47 PM   #13
Spider-One
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If those are the Cloud Rider inserts I believe they do come in black but for an extra $300 I don't see many people going that route, which is why I never bothered.

http://www.cloud-rider.com/market/index/page/grills

Do a vehicle search on the top right to pull up the options.
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Unread 01-18-2011, 03:34 PM   #14
fred99x
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You want more heat. Check this one out. Complete with flames for more heat
http://www.thepartsbin.com/catalog/?...ep,model:Grand Cherokee,year:2008),AND(universal:1))&Vi=1557+1085 3+4294962483&y=2008&mk=Jeep&md=Grand Cherokee
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Unread 01-18-2011, 03:42 PM   #15
BurmaJack
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Quote:
Originally Posted by Spider-One View Post
If those are the Cloud Rider inserts I believe they do come in black but for an extra $300 I don't see many people going that route, which is why I never bothered.

http://www.cloud-rider.com/market/index/page/grills

Do a vehicle search on the top right to pull up the options.
Holy Mother! I think I'll fab my own and spend the money on tires! Pretty pricy
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