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Unread 05-23-2013, 01:36 PM   #1
Stegs
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79 cj5 grill

why does this jeep have a screen over the grill?

is this just a winter time things where it keeps the motor warmer? ive seen a few different jeeps with it....im just use to the slot grills

http://nmi.craigslist.org/cto/3742027976.html

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Unread 05-23-2013, 01:45 PM   #2
Guy Smilie
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Keeps rocks and sticks from damaging the radiator
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Unread 05-23-2013, 01:47 PM   #3
Stegs
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Originally Posted by Guy Smilie View Post
Kepps rocks and sticks from damaging the radiator
so its a cover, the normal slot grill is behind it?
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Unread 05-23-2013, 02:32 PM   #4
Guy Smilie
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Quote:
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so its a cover, the normal slot grill is behind it?
Yes
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Unread 05-23-2013, 04:26 PM   #5
keith460
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That's the standard Bug Screen for the front of a CJ. I always thought they looked kinda fugly.
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Unread 05-23-2013, 05:25 PM   #6
json1123
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Originally Posted by keith460 View Post
That's the standard Bug Screen for the front of a CJ. I always thought they looked kinda fugly.
I agree.
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Unread 05-23-2013, 08:03 PM   #7
WindKnot
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Yep, but they're useful. I'm half heartedly looking for a way to install something behind the grill.
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Unread 05-23-2013, 08:43 PM   #8
LumpyGrits
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Those things block allot of air from the cooling system.
LG
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Unread 05-23-2013, 09:00 PM   #9
keith460
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Originally Posted by WindKnot View Post
Yep, but they're useful. I'm half heartedly looking for a way to install something behind the grill.
I did that, using screen door frame that you buy from the hardware store and cut to length the way you want it. It has plastic corner pieces to make the connections and then roll in the screening and cut off the excess.

I added some pieces of short rubber hose split down the middle so it wouldn't rattle around behind the grill and it is tight against the radiator. You can't even see it. It works reasonably well, but the Noseeums go right through it.

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Unread 05-23-2013, 09:40 PM   #10
firemanjim7
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Quote:
Originally Posted by keith460

I did that, using screen door frame that you buy from the hardware store and cut to length the way you want it. It has plastic corner pieces to make the connections and then roll in the screening and cut off the excess.

I added some pieces of short rubber hose split down the middle so it wouldn't rattle around behind the grill and it is tight against the radiator. You can't even see it. It works reasonably well, but the Noseeums go right through it.
Hey Keith. If you could take that screen and push it together it would block roughly 2/3 of the surface. Just saying. Screen that small is horrible for airflow.

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Unread 05-23-2013, 10:24 PM   #11
hutch1200
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I rather like Keiths' screen idea. And I've yet to hear from the guys w/huge winches blocking almost the whole rad area complaining. Blocking 60% of the rad face? I stow my winch for front or rear use, and have a screen inside the grill. My stock HD cooling system keeps my hi-po 360 cool. Not to start a war, but less cooling is better than no cooling when a rock takes out your rad. Add extra fans, lower t-stat....but a screen has saved my butt a few times.
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Unread 05-24-2013, 04:59 AM   #12
keith460
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Quote:
Originally Posted by firemanjim7 View Post
Hey Keith. If you could take that screen and push it together it would block roughly 2/3 of the surface. Just saying. Screen that small is horrible for airflow.

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That screen does not block airflow, only bugs! I get the same amount of airflow being pulled in by my stock 4 blade cooling fan if the screen is in or out.
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Unread 05-24-2013, 08:51 AM   #13
WindKnot
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Thanks.

Speaking of no-see-ums, I went out yesterday an now have a ring of bites right around my legs at the sock line. Maybe I should just screen the whole Jeep instead...
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Unread 05-24-2013, 01:09 PM   #14
LumpyGrits
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Quote:
Originally Posted by hutch1200 View Post
I rather like Keiths' screen idea. And I've yet to hear from the guys w/huge winches blocking almost the whole rad area complaining. Blocking 60% of the rad face? I stow my winch for front or rear use, and have a screen inside the grill. My stock HD cooling system keeps my hi-po 360 cool. Not to start a war, but less cooling is better than no cooling when a rock takes out your rad. Add extra fans, lower t-stat....but a screen has saved my butt a few times.


I have a Warn mod# 8274 winch on the front of my Jeep CJ-7, it has been there for 28+ yrs. I bought this Jeep new in '85.
NEVER, had any cooling issue, and I live in the Mojave Desert run'n a 195* t'stat in my 4.2L carb'd 6 cyl engine.
I have seen many Jeep CJs overheat while run'n the bug-screen in the OP's photo.
LG
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Unread 05-24-2013, 02:04 PM   #15
Dngrs1
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Quote:
Originally Posted by hutch1200 View Post
Not to start a war, but less cooling is better than no cooling when a rock takes out your rad.
I had installed 1/4" hardware cloth behind the grill, in front of the radiator, to keep sticks and things from hitting my radiator. It raised the coolant temps about 20* on the highway. I removed it and the temps went back down to normal. If your worried about rocks hitting your radiator, don't tailgate the vehicle in front of you on the trail.
Not trying to start a war, hutch, just relating my experience.
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