Go Back   Jeep Garage - Jeep Forum > Jeep Platform Discussion > Grand Cherokee - WJ

Join Jeep Garage Today
Reply
 
Thread Tools Display Modes
 
  #1  
Old 09-09-2012, 05:58 PM
cheapjeep's Avatar
Amber Instigator
My Jeep: 2004 4.7 HO WJ
 
Join Date: Sep 2010
Location: Strongstown Pa.
Posts: 3,023
Thanks: 86
Thanked 65 Times in 61 Posts
Rep Power: 331684
cheapjeep has a reputation beyond reputecheapjeep has a reputation beyond reputecheapjeep has a reputation beyond reputecheapjeep has a reputation beyond reputecheapjeep has a reputation beyond reputecheapjeep has a reputation beyond reputecheapjeep has a reputation beyond reputecheapjeep has a reputation beyond reputecheapjeep has a reputation beyond reputecheapjeep has a reputation beyond reputecheapjeep has a reputation beyond repute
Garage
HO exhaust question

Do you HO guys have just the 2 cats in the y pipe or do you have the third one also? The reason I'm asking is because mine never had the 3rd cat. I don't believe it ever did as I'm the second owner and it didn't have a lot of miles on it when I got it and as far as I know the original exhaust. In the pics below you can see where the exhaust was welded together but that was cut there to remove the y pipe to change the oil pan. It was just straight pipe there. Also in the pic where the clamp is the pipes have the original locator tab and notch so I'm thinking the pipe from the y pipe to the muffler was original.







__________________

__________________
Dave'04 Overland,I don't even remember what I did to it anymore.

Quote:
Originally Posted by TJXJWJ View Post
OK, fine...I'll admit...some amber lamps are good, and necessary.
Reply With Quote
  #2  
Old 09-09-2012, 07:55 PM
Frango100's Avatar
The BEAST from Brazil

My Jeep: 2004 4.7L WJ
 
Join Date: Dec 2009
Location: Brazil
Posts: 4,318
Thanks: 8
Thanked 32 Times in 31 Posts
Rep Power: 524710
Frango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond repute
Re: HO exhaust question

I think that there is no difference on the exhaust for the 4.7 and 4.7HO. Mine also only has the precats.
__________________

__________________
Frank

JEEP Grand Cherokee 4.7 Lmtd 2004
HID 8000K in low and fog / Quad Squad member
Monroe Reflex shocks / Pirelli Scorpion ATR 245/65/17 - Transgo reprogramming shiftkit.

VW Beetle 2.0 TSI 2013
My new toy
Reply With Quote
  #3  
Old 09-09-2012, 08:18 PM
TJXJWJ's Avatar
The "pre" SRT 8
My Jeep: 2004 4.7 HO WJ
 
Join Date: Jun 2010
Location: Aurora, OH
Posts: 3,371
Thanks: 192
Thanked 66 Times in 56 Posts
Rep Power: 286571
TJXJWJ has a reputation beyond reputeTJXJWJ has a reputation beyond reputeTJXJWJ has a reputation beyond reputeTJXJWJ has a reputation beyond reputeTJXJWJ has a reputation beyond reputeTJXJWJ has a reputation beyond reputeTJXJWJ has a reputation beyond reputeTJXJWJ has a reputation beyond reputeTJXJWJ has a reputation beyond reputeTJXJWJ has a reputation beyond reputeTJXJWJ has a reputation beyond repute
Garage
Re: HO exhaust question

Mine looks the same as yours...2 pre cats only.
__________________
Tony-04 Limited HO, DkKhaki w/tan leather int. All LED lighting, 5000k Xtreme HID projs. (deambered)&fogs w/CCFL rings, tinted tails&3rd LED brake lt, fnt glass tinted to match, shawty antenna, 6 Polk speakers, K&N FIPK, FR 70mm TB, TCM#10 snip, Flashpaq'ed on 91 tune, Bilstien HD's, Addcos, polished 20" SRT reps, Hankook Ventus Evos (255-45), Weathertech mats, EBC USR rotors, EBC Greenstuff pads, Magnaflow muffler, RB1 Nav w/iPod kit, de-badged, roof rack delete.
09 Liberty KK Rocky Mountain Edition. Added Mopar Remote Start kit, Weathertech Mats, K&N drop-in.
PAST JEEPS : 99 TJ Sport, 98 XJ Sport, 06 WK Laredo
Reply With Quote
  #4  
Old 09-09-2012, 08:59 PM
hoffmanestates's Avatar
Member
 
Join Date: Nov 2011
Posts: 799
Thanks: 0
Thanked 2 Times in 2 Posts
Rep Power: 2017
hoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond repute
I noticed you are missing resonator. Looks like a canister in pic #3

Sent from my LG-P999 using Tapatalk 2
__________________
Reply With Quote
  #5  
Old 09-09-2012, 11:26 PM
cheapjeep's Avatar
Amber Instigator
My Jeep: 2004 4.7 HO WJ
 
Join Date: Sep 2010
Location: Strongstown Pa.
Posts: 3,023
Thanks: 86
Thanked 65 Times in 61 Posts
Rep Power: 331684
cheapjeep has a reputation beyond reputecheapjeep has a reputation beyond reputecheapjeep has a reputation beyond reputecheapjeep has a reputation beyond reputecheapjeep has a reputation beyond reputecheapjeep has a reputation beyond reputecheapjeep has a reputation beyond reputecheapjeep has a reputation beyond reputecheapjeep has a reputation beyond reputecheapjeep has a reputation beyond reputecheapjeep has a reputation beyond repute
Garage
Re: HO exhaust question

That's weird the service manual shows the cat between the y pipe and muffler on all 4.7's(federal and Cali) and Stone has one on his
__________________
Dave'04 Overland,I don't even remember what I did to it anymore.

Quote:
Originally Posted by TJXJWJ View Post
OK, fine...I'll admit...some amber lamps are good, and necessary.
Reply With Quote
  #6  
Old 09-09-2012, 11:32 PM
FlyinRyan's Avatar
Senior Member
My Jeep: 2002 4.7L WJ
 
Join Date: Jul 2009
Location: Fort Myers, Florida
Posts: 2,797
Thanks: 33
Thanked 29 Times in 28 Posts
Rep Power: 87935
FlyinRyan has a reputation beyond reputeFlyinRyan has a reputation beyond reputeFlyinRyan has a reputation beyond reputeFlyinRyan has a reputation beyond reputeFlyinRyan has a reputation beyond reputeFlyinRyan has a reputation beyond reputeFlyinRyan has a reputation beyond reputeFlyinRyan has a reputation beyond reputeFlyinRyan has a reputation beyond reputeFlyinRyan has a reputation beyond reputeFlyinRyan has a reputation beyond repute
Send a message via AIM to FlyinRyan
Re: HO exhaust question

Its a late 04 thing.
__________________
Due to my workload, please do not PM me as I do not regularly check my PMs. Thank you :)
Reply With Quote
  #7  
Old 09-10-2012, 12:46 AM
Dustinmk4's Avatar
Member
My Jeep: 2004 4.7L WJ
 
Join Date: Jun 2012
Location: Northern Utah
Posts: 435
Thanks: 36
Thanked 17 Times in 16 Posts
Rep Power: 1107
Dustinmk4 is on a distinguished road
Re: HO exhaust question

My 04 non ho looks the same
__________________
2004 WJ Limited (The Phoenix), Addco rear sway bar, CAI, super cool firefighter logo seat covers so my kids don't destroy my leather, sct tune from Flyin Ryan, Fat Bob's Garage 2.5"/2" lift, Treadwright 245/75R16 Pumas.
Reply With Quote
  #8  
Old 09-10-2012, 12:30 PM
01grand's Avatar
Super Moderator

My Jeep: 2001 4.7L WJ
 
Join Date: Dec 2010
Location: Prior Lake, MN
Posts: 1,788
Thanks: 37
Thanked 59 Times in 58 Posts
Rep Power: 54174
01grand has a reputation beyond repute01grand has a reputation beyond repute01grand has a reputation beyond repute01grand has a reputation beyond repute01grand has a reputation beyond repute01grand has a reputation beyond repute01grand has a reputation beyond repute01grand has a reputation beyond repute01grand has a reputation beyond repute01grand has a reputation beyond repute01grand has a reputation beyond repute
Re: HO exhaust question

I also have the 3rd cat, but mine is a 2001. I remember reading something about this before that agrees with what Ryan said, some time in 04 they deleted the 3rd cat, maybe all 04's?. I plan on taking mine out when I do my exhaust, on the 2001 the pipe is 2.5" up to the 3rd cat and goes to 2.25" after it, so if I cut it out I can easily do 2.5" the whole way back, for whatever that may be worth. Stonecold's is a 2000 I believe thats why he has all 3.
__________________
Aaron

My Jeep: 2001 Grand Cherokee Limited, 245/65R17 Falken Rocky Mountain ATS, K&N drop in air filter, Bilstein HD's. De-badged, eagle-eye LED Tails & LED 3rd brake light, Addco front and rear sway bars, Superchips tuned & TM snip, interior 6k LED's, Gen3 ccfl projectors with Volt 6k HID lows, akebono brake upgrade with R1 Concepts premium rotors.
Reply With Quote
  #9  
Old 09-10-2012, 02:05 PM
Trav1s's Avatar
Member
My Jeep: 2004 4.7 HO WJ
 
Join Date: Apr 2012
Location: Cedar Rapids, IA
Posts: 593
Thanks: 0
Thanked 15 Times in 14 Posts
Rep Power: 1421
Trav1s has a reputation beyond reputeTrav1s has a reputation beyond reputeTrav1s has a reputation beyond reputeTrav1s has a reputation beyond reputeTrav1s has a reputation beyond reputeTrav1s has a reputation beyond repute
Garage
Re: HO exhaust question

My Columbia Edition built in October IIRC is like the picture above.
__________________
2004 Columbia Edition WJ 4.7 HO
RB4/Moog HD Steering Stabilizer/PML trans pan 10304/OME 10MM Spacers/Bilstein shocks/Rubicon Moabs/255/65r17 Cooper Discoverer AT3/Factory chrome tow hooks/Mopar hitch & a loose nut behind the wheel
Reply With Quote
  #10  
Old 09-10-2012, 05:12 PM
Member
My Jeep: 2002 4.7 HO WJ
 
Join Date: Jul 2012
Location: Boise, Idaho
Posts: 14
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 669
Ben_02WJ is on a distinguished road
Re: HO exhaust question

My 2002 HO has all three cats...
__________________
Reply With Quote
  #11  
Old 09-10-2012, 08:39 PM
cheapjeep's Avatar
Amber Instigator
My Jeep: 2004 4.7 HO WJ
 
Join Date: Sep 2010
Location: Strongstown Pa.
Posts: 3,023
Thanks: 86
Thanked 65 Times in 61 Posts
Rep Power: 331684
cheapjeep has a reputation beyond reputecheapjeep has a reputation beyond reputecheapjeep has a reputation beyond reputecheapjeep has a reputation beyond reputecheapjeep has a reputation beyond reputecheapjeep has a reputation beyond reputecheapjeep has a reputation beyond reputecheapjeep has a reputation beyond reputecheapjeep has a reputation beyond reputecheapjeep has a reputation beyond reputecheapjeep has a reputation beyond repute
Garage
Re: HO exhaust question

Thanks for all the input guys! The reason I am so curious about this is I'm seriously considering Stonecold's muffler delete and going to 3" the whole way from the y pipe to the bumper. I'm afraid it might be too loud with the 2 cat system.
__________________
Dave'04 Overland,I don't even remember what I did to it anymore.

Quote:
Originally Posted by TJXJWJ View Post
OK, fine...I'll admit...some amber lamps are good, and necessary.
Reply With Quote
  #12  
Old 09-11-2012, 05:49 AM
hoffmanestates's Avatar
Member
 
Join Date: Nov 2011
Posts: 799
Thanks: 0
Thanked 2 Times in 2 Posts
Rep Power: 2017
hoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond repute
So the canister looking.thing down stream.of.the small twin cats is a bigger cat? But no sensors? Then I guess I have this.also

Sent from my LG-P999 using Tapatalk 2
__________________

__________________
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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
Exhaust Question ONEbadHEEPtruck Performance Modifications 2 11-08-2011 06:59 PM
Exhaust question ithinkfit914 Engine Performance/Intake/Exhaust 11 12-22-2010 03:48 PM
3.7 L exhaust question stealth32 Grand Cherokee - WK 25 11-23-2010 08:10 AM
Exhaust Question? Bearcat_96 Grand Cherokee - WK 2 10-13-2010 11:04 AM
Exhaust question Adolfo Performance Modifications 2 03-09-2010 05:44 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 09:50 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community