TJ - air intake - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 08-29-2009, 04:32 AM   #1
Jeeper
 
Incursorio's Avatar
 
Join Date: Jul 2009
Location: Croatia, Europe
Posts: 60
Exclamation TJ - air intake

Hey guys.. Even though I own YJ, i have >> this problem <<


Where does TJ take air in? I just don't get it -- it solely takes air from the radiator fan or what...?

Incursorio is offline   Quote Quick Reply
Old 08-29-2009, 02:00 PM   #2
Jeeper
 
jerryj's Avatar
 
Join Date: May 2009
Location: Idyllwild
Posts: 670
here u go

jerryj is offline   Quote Quick Reply
Old 08-29-2009, 07:17 PM   #3
Jeeper
 
dbbd1's Avatar
 
Join Date: Sep 2008
Location: Oregon
Posts: 259
There is a horn-like tube on the front of the airbox, this draws air from up, near the underside of the hood, behind the right side headlight.
dbbd1 is offline   Quote Quick Reply
Old 08-30-2009, 08:19 AM   #4
Jeeper
 
Incursorio's Avatar
 
Join Date: Jul 2009
Location: Croatia, Europe
Posts: 60
Quote:
Originally Posted by dbbd1 View Post
There is a horn-like tube on the front of the airbox, this draws air from up, near the underside of the hood, behind the right side headlight.
Thanks! That's what I wanted to hear
__________________
Incursorio is offline   Quote Quick Reply
Old 08-30-2009, 05:40 PM   #5
Jeeper
 
PT4WDL's Avatar
 
Join Date: Jul 2009
Location: Frankfort,Ky
Posts: 249
I can give you a pic of the K+N on my tj but it will have to wait til' tomorrow. I could go look but I am tired after the 8 hour trail ride.
PT4WDL is offline   Quote Quick Reply
Old 08-30-2009, 07:34 PM   #6
Jeeper
 
gaddman's Avatar
 
Join Date: Aug 2009
Location: South Carolina
Posts: 49
Here is a pic of the horn looking air intake on my 97 TJ.
Attached Thumbnails
Click image for larger version

Name:	TJ Air Intake2.jpg
Views:	10
Size:	95.3 KB
ID:	10933  
gaddman is offline   Quote Quick Reply
Old 08-30-2009, 09:28 PM   #7
Jeeper
 
Jeepzcb09's Avatar
 
Join Date: Jun 2009
Location: springfield,OH
Posts: 714
Is that horn efficiant? I mean how does it get enough air from an upward horn? wouldnt it be better if you took the horn off and just left the huge hole for air to enter?
__________________
1998 Tj Sport: Rough Country,MetalCloak,GoodYear,Alpine,Crager,AtoZ

Check out my band:AfterTatse2010.webs
Jeepzcb09 is offline   Quote Quick Reply
Old 08-30-2009, 09:55 PM   #8
Jeeper
 
gaddman's Avatar
 
Join Date: Aug 2009
Location: South Carolina
Posts: 49
Quote:
Originally Posted by Jeepzcb09 View Post
Is that horn efficiant? I mean how does it get enough air from an upward horn? wouldnt it be better if you took the horn off and just left the huge hole for air to enter?
I was thinking that same thing. I don't know since I'm still new to the whole Jeep world but I guess its like for a reason. The only reason I can think of though is so water wouldn't get in if you took it into deep water without a snorkel. I dunno though. Only a matter of time before I trash mine and get a CAI anyway.
gaddman is offline   Quote Quick Reply
Old 08-30-2009, 10:07 PM   #9
Jeeper
 
Jeepzcb09's Avatar
 
Join Date: Jun 2009
Location: springfield,OH
Posts: 714
Quote:
Originally Posted by gaddman View Post
I was thinking that same thing. I don't know since I'm still new to the whole Jeep world but I guess its like for a reason. The only reason I can think of though is so water wouldn't get in if you took it into deep water without a snorkel. I dunno though. Only a matter of time before I trash mine and get a CAI anyway.
ya man thats all I can think of to (so water dont get in)
__________________
1998 Tj Sport: Rough Country,MetalCloak,GoodYear,Alpine,Crager,AtoZ

Check out my band:AfterTatse2010.webs
Jeepzcb09 is offline   Quote Quick Reply
Old 08-31-2009, 08:57 AM   #10
Jeeper
 
Incursorio's Avatar
 
Join Date: Jul 2009
Location: Croatia, Europe
Posts: 60
Quote:
Originally Posted by PT4WDL View Post
I can give you a pic of the K+N on my tj but it will have to wait til' tomorrow. I could go look but I am tired after the 8 hour trail ride.
Thanks
__________________
Incursorio is offline   Quote Quick Reply
Old 08-31-2009, 09:23 AM   #11
Jeeper
 
mrcarcrazy's Avatar
 
Join Date: Jul 2009
Location: Midland/Odessa, TX
Posts: 3,903
Don't trash it! there may be a needy soul on here (like me) that wants a factory intake.

I just ordered one off daveysjeeps.com last week...should be here tomorrow.

Wanna buy my fancy intake? make you a helluva deal! This is an excellent example of why you shouldn't buy "performance upgrades" from AutoZone.....NOTE: I am not the moron who purchased it, I purchased the jeep...it came with this fantastic piece of work already on it.
Attached Thumbnails
Click image for larger version

Name:	intake.jpg
Views:	10
Size:	97.6 KB
ID:	10942  
mrcarcrazy is offline   Quote Quick Reply
Old 08-31-2009, 01:16 PM   #12
Jeeper
 
Jeepzcb09's Avatar
 
Join Date: Jun 2009
Location: springfield,OH
Posts: 714
I dont have a "performance"intake but what so bad about your s? It looks like a chrome K and N
__________________
1998 Tj Sport: Rough Country,MetalCloak,GoodYear,Alpine,Crager,AtoZ

Check out my band:AfterTatse2010.webs
Jeepzcb09 is offline   Quote Quick Reply
Old 09-01-2009, 12:24 AM   #13
Jeeper
 
Join Date: Jan 2009
Location: no mans land, benton ks
Posts: 611
the air horn is supposed to help with water and noise. i pulled mine off as an experiment to see if it would help or not. it is definately a lot more noise from the intake because it is having to suck the air through the intake instead of having the momentum that the air horn creates. but, i think that momentum is stopped at the filter though.

my jeep sounds as it now has a cold air intake now. at first i gained about .5 to 1 mpg when i removed it, but i think that it was masking some other issue i am having with it.
__________________
1977 Cherokee ChiefEdelbrock 1406, 33X12.50, front 1.5 inch shackle lift. AMC 360, th400 Quadra-Trac
2002 wrangler, stock 4.0, auto, 33X12.50 maxis buckshot, AEV Highline Body kit, Ford 9 inch rear end.
Soon to come mods: 4" full traction lift, 4.56 gears, 35X10.50R15 boggers, 35X12.50 cooper st tires, spooled rear end, and much more.
crazyredneck is offline   Quote Quick Reply
Old 09-01-2009, 01:15 AM   #14
Jeeper
 
Jeepzcb09's Avatar
 
Join Date: Jun 2009
Location: springfield,OH
Posts: 714
so do you recomend taking off the horn? Or do you recamend getting a CAI, or leaving it as is?
__________________
1998 Tj Sport: Rough Country,MetalCloak,GoodYear,Alpine,Crager,AtoZ

Check out my band:AfterTatse2010.webs
Jeepzcb09 is offline   Quote Quick Reply
Old 09-01-2009, 10:53 AM   #15
Jeeper
 
Join Date: Jan 2009
Location: no mans land, benton ks
Posts: 611
well, its completely up to you, my only worry with the CAI is that it HAS to have the heat shield that goes between the filter and the fan/motor to protect it from dirt, water, rocks, ect.


there are a couple of people that say CAI is not worth the price, which i agree, for the minimal gain, it definitely not worth the $. the most restrictive part of the factory intake would be the air horn and the "flex" joints. when i modify my intake more i am wanting to go with a new tube to the factory air box. i will search for a better filter that will fit in the factory air box,

here is the filter that i will be switching to when i change my oil.
http://www.amsoil.com/catalog.aspx?code=EAA215-EA

i run AMSOIL btw.
__________________
1977 Cherokee ChiefEdelbrock 1406, 33X12.50, front 1.5 inch shackle lift. AMC 360, th400 Quadra-Trac
2002 wrangler, stock 4.0, auto, 33X12.50 maxis buckshot, AEV Highline Body kit, Ford 9 inch rear end.
Soon to come mods: 4" full traction lift, 4.56 gears, 35X10.50R15 boggers, 35X12.50 cooper st tires, spooled rear end, and much more.
crazyredneck is offline   Quote Quick Reply
Old 09-01-2009, 10:59 AM   #16
Jeeper
 
mrcarcrazy's Avatar
 
Join Date: Jul 2009
Location: Midland/Odessa, TX
Posts: 3,903
Personally I'm a fan of Amsoil drop in filters. That's what my Tj will receive when I get my OEM intake setup in the mail tomorrow.

My intake (pictured above) has many things wrong with it. First the filter, is a poor excuse of a knock off K&N. I"m not a fan of the lack of filtering I've seen in engines where real K&N's were used. Then there's the design. It has nothing to keep the filter in place...no bracket at that end, no heat shield, metal tubing (absorbs heat, which preheats the intake air). Sharp 90 degree bends can't be good either....
mrcarcrazy is offline   Quote Quick Reply
Old 09-01-2009, 12:00 PM   #17
Jeeper
 
meyers's Avatar
 
Join Date: Apr 2009
Location: Dover, New Hampshire
Posts: 738
One of the things I want to do one of these days is to build a PVC pipe assembly from the stock air box to allow it to suck air from outside the engine compartment. To replace the stock air box is IMHO a waste of money. The stock system gives more than enough air for what the Jeep needs, I figure for a few dollars in PVC fittings I can play around and see if cold air into the air box makes any difference, probably wont but it will be a fun quick project!!
meyers is offline   Quote Quick Reply
Old 09-01-2009, 01:22 PM   #18
Jeeper
 
Incursorio's Avatar
 
Join Date: Jul 2009
Location: Croatia, Europe
Posts: 60
I'm getting a brand new k&n FIPK for tj for as much as $70.. So I guess I can check it's functionality. I now have fK&N panel filter on my YJ; looks like this one




And I am satisfied; I just want to know how good FIPK is for that $70 and which are the benefits of it.
__________________
Incursorio is offline   Quote Quick Reply
Old 09-01-2009, 01:37 PM   #19
Jeeper
 
Join Date: Aug 2008
Posts: 2,473
So mow much air does your Jeep need?

4.0 Liter engine?
That mean every revolution it inhales 2.0 Liters.

So, at 2000 RPM - cruise - it wants to inhale 2000x2.0 Liters = 4000 Liters!

4000 Liters of air every minute!

With the tiny hole in the front of the airbox do you think 4000 Liters can get in there evey minute? Or is it like jogging with a rag in your mouth?

Try something - take the snout off so the throttle body has nothing to restrict the air. (Make sure you don't have fiberglass insulation that can get sucked in.)

Take it for a short test drive - unrestriced - FEEL THE DIFFERENCE?
__________________
It's no wonder the country is falling apart - stupidity abounds!
rrich is offline   Quote Quick Reply
Old 09-01-2009, 01:41 PM   #20
Jeeper
 
Jeepzcb09's Avatar
 
Join Date: Jun 2009
Location: springfield,OH
Posts: 714
Has amyone seen Frams AirHog Filters, they are supposed to be performance drop in filters for your stock air box(like the KansN one above) and are washable, and reusable for the life of the vehicle. They look pretty nice, and thats what I would get. Also do you recomend taking off the air horn and drilling some extra holes in the box?
__________________
1998 Tj Sport: Rough Country,MetalCloak,GoodYear,Alpine,Crager,AtoZ

Check out my band:AfterTatse2010.webs
Jeepzcb09 is offline   Quote Quick Reply
Old 09-01-2009, 02:22 PM   #21
Jeeper
 
Incursorio's Avatar
 
Join Date: Jul 2009
Location: Croatia, Europe
Posts: 60
Quote:
Originally Posted by rrich View Post
(Make sure you don't have fiberglass insulation that can get sucked in.)

Actually I do have it Bummer. I even have the Plymouth / Chrysler sticker underneath the hood that says "Manufactured for export" :-) Along with "Sentry Guard" hood lock.

I wouldn't dare driving on open throttle body.

BUT I would try this..


Filter cone directly on the throttle + the hood scoop

__________________
Incursorio is offline   Quote Quick Reply
Old 09-01-2009, 02:52 PM   #22
Jeeper
 
mrcarcrazy's Avatar
 
Join Date: Jul 2009
Location: Midland/Odessa, TX
Posts: 3,903
This has been discussed to death on numerous car forums...the basic fact of the matter is unless you have Dyno proof, you have no proof.

Every make/model is different, some have such poorly designed intakes that the aftermarket are able to pull some extra ponies, but most now days are not that badly designed.

The only forum I've been on where a bunch were dyno'd by an independent person who had no interest either was a member on Lotustalk.com and that was on a lotus elise. he found that taking the snorkel off the stock airbox was the best for HP....even compared to aftermarket intakes. but again that's on a different car. So it doesn't matter here.

I saw a writeup in a magazine (online) where they compared different intakes on teh 4.0L in a TJ...and there were some gains to be had. but in a vehicle that weighs as much as a jeep it won't be anything you'd "FEEL".


Butt dyno's are worthless, as the extra noise you hear often influences your "perceived gain".

Then there's the issue of extra crud. Which numerous tests have indicated cotton filters don't do the best job of filtering. So are these few extra ponies worth the extra wear from silica, etc entering the intake stream?

just .02 for free.


Quote:
Originally Posted by rrich View Post
So mow much air does your Jeep need?

4.0 Liter engine?
That mean every revolution it inhales 2.0 Liters.

So, at 2000 RPM - cruise - it wants to inhale 2000x2.0 Liters = 4000 Liters!

4000 Liters of air every minute!

With the tiny hole in the front of the airbox do you think 4000 Liters can get in there evey minute? Or is it like jogging with a rag in your mouth?

Try something - take the snout off so the throttle body has nothing to restrict the air. (Make sure you don't have fiberglass insulation that can get sucked in.)

Take it for a short test drive - unrestriced - FEEL THE DIFFERENCE?

mrcarcrazy is offline   Quote Quick Reply
Reply

Tags
air intake , tj air intake

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Anyone recognize this intake mrcarcrazy TJ General Discussion Forum 15 08-17-2009 02:14 AM
exhaust and intake 04unlimited TJ Tech Forum 26 07-11-2009 01:12 AM
Cold Air Fab and Intake Mod SavageSun4x4 General Jeep Discussion 0 10-22-2007 08:10 PM
AFE Intake Installed!! Absolute Offroad JK General Discussion Forum 19 04-22-2007 09:17 PM



Download our Mobile App

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 04:10 AM.



Jeep, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC