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Modified XJ Cherokee Tech XJ (84-01)
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all muffler and exhaust questions go here!!!!!!

Old 12-22-2018, 07:14 AM
  #4951  
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​​​​​​Yeppers, quite familiar with emissions thanks for your response. Ya I would be eliminating the cats, and yea the state I'm in has no regulations with emissions.
My worries were the physical size of the ports from the head to the manifold. If the 99's were a different size to the 00/01's

Thanks again.
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Old 12-22-2018, 07:23 AM
  #4952  
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Originally Posted by Cusimano
​​​​​​Yeppers, quite familiar with emissions thanks for your response. Ya I would be eliminating the cats, and yea the state I'm in has no regulations with emissions.
My worries were the physical size of the ports from the head to the manifold. If the 99's were a different size to the 00/01's

Thanks again.
The ports are smaller on the 00-01 so you should be good. I've only heard of issues with using a different intake/exhaust won't be renix Cherokees because the intake and exhaust ports were in different locations than they are on the newer heads
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Old 12-22-2018, 08:01 AM
  #4953  
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Originally Posted by DDD View Post
I just purchased a 2000 XJ sport 4x4 4.0, and cannot seem to get straight answers from the internet on an exhaust replacement. I see 2.25" and 2.5" as direct replacements. how is this possible? I'm looking to replace the cat, pipe to muffler, muffler, and tail pipe.

Any help is appreciated.
Darryl
Do you have a CA Emissions one or a Federal Emissions one. My '00 is CA Emissions. I replaced the dual cat back. All Walker parts. Everything is 2.25 if I recall correctly.
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Old 12-22-2018, 06:36 PM
  #4954  
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Originally Posted by SatiricalHen View Post
The ports are smaller on the 00-01 so you should be good. I've only heard of issues with using a different intake/exhaust won't be renix Cherokees because the intake and exhaust ports were in different locations than they are on the newer heads
Cool thanks again!
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Old 02-16-2019, 03:44 PM
  #4955  
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Default What catalytic; recomend this exhaust (BANKS)

I am going to purchasing/replacing the exhaust on my 98 Cherokee while getting the lift installed, including the catalytic. Cost is a factor to a degree, as I have a gift card to use up as well....
Can anyone share any experience they have with these, as well as telling me if the catalytic is the correct one for bolt on installation (I don't know inlet/outlet diameter, as it isn't shown where ever I look):

MAGNAFLOW DIRECT FIT CAT part #23226 (ALSO, is this a high flow cat? I'd like one, but not if it's gonna drone a lot or make being in the cab unbearable @ highway speeds....I've rode in rigs like this, really don't like it, lol)
BANKS POWER MONSTER EXHAUST #51360---2.50 tubing---I chose because of cost; construction, and reviews that stated it was not over the top loud.
I am lead to believe these are direct fit/bolt on for my application, which is something I'm also looking for.

Hoping to make my jeep breathe a lil' better than stock; maybe increase low end grunt a lil; not expecting a huge hp increase, and sound halfway decent without making me even more tone deaf, lol.. Any info, experiences with this brand, or other options would be much appreciated
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Old 02-16-2019, 09:26 PM
  #4956  
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Default Exhaust

[QUOTE=9998Cherokees;3542063]I am going to purchasing/replacing the exhaust on my 98 Cherokee while getting the lift installed, including the catalytic. Cost is a factor to a degree, as I have a gift card to use up as well....
Can anyone share any experience they have with these, as well as telling me if the catalytic is the correct one for bolt on installation (I don't know inlet/outlet diameter, as it isn't shown where ever I look):

This is my exhaust on my 98 Sport RWD:
Amazon Amazon
Amazon Amazon
Amazon Amazon
https://www.oreillyauto.com/detail/b...r+filter&pos=1

Looks clean, sounds mean...when I want it to. Yes, it is louder but the MPG and performance gains are worth it 100% in my book. Also replaced the distributor, CPS, plugs, and just installed some new Taylor Thunderbolt wires:
Amazon Amazon

Total transformation. If I said I was pleased, it would be the understatement of the year. I am ecstatic that it all came together so beautifully and I am proud to call my XJ my daily driver. Just my 2 cents.
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Old 02-17-2019, 07:22 AM
  #4957  
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[QUOTE=Remo73;3542115]
Originally Posted by 9998Cherokees View Post
I am going to purchasing/replacing the exhaust on my 98 Cherokee while getting the lift installed, including the catalytic. Cost is a factor to a degree, as I have a gift card to use up as well....
Can anyone share any experience they have with these, as well as telling me if the catalytic is the correct one for bolt on installation (I don't know inlet/outlet diameter, as it isn't shown where ever I look):

This is my exhaust on my 98 Sport RWD: https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
https://www.oreillyauto.com/detail/b...r+filter&pos=1

Looks clean, sounds mean...when I want it to. Yes, it is louder but the MPG and performance gains are worth it 100% in my book. Also replaced the distributor, CPS, plugs, and just installed some new Taylor Thunderbolt wires: https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

Total transformation. If I said I was pleased, it would be the understatement of the year. I am ecstatic that it all came together so beautifully and I am proud to call my XJ my daily driver. Just my 2 cents.
I really do appreciate all the links you shared to try and show me your setup, but unfortunately, for whatever reason, whenever, not just yours, I try to click on them to view (this only happens on this forum), I get the message "navigation to this website cancelled"...

But from what you describe, your setup sure sounds like one I'd like. I, too, am replacing many of the other items you mention...

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Old 02-17-2019, 11:18 AM
  #4958  
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Huh. Not sure why you can't click on the links as they are working for me? Maybe you need to change your IE or Chrome extensions or something. At any rate, you can just copy and paste the parts in my sig in Google I believe.

I forgot to mention I also replaced the "B" pipe that runs from the header to the Cat. The factory B pipe has a restrictive bend in it that was probably designed with the MVH in mind (motor vibration/handling specs) and besides, it was pretty funky looking after 235K miles.

Once you remove all the restrictions designed by Jeep engineers to keep the cabin noise to a minimum, it is louder but you reclaim the power you never knew was there. My rig has a new lease on life. I literally can not wait to drive it and I make up excuses to take adventures with it whenever possible.
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Old 02-28-2019, 11:44 AM
  #4959  
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So I may or may not have an issue here. Right before the flange where the rest of the exhaust bolt to the manifold/header, the 2.5" pipe is bashed in around 2/3 of the way through. It seems to run fine and sounds fine, but how much of an issue could this be causing/ cause later on? The rest of my exhaust is open besides a Thrush Glasspack near the end.
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Old 03-01-2019, 12:58 AM
  #4960  
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The options are getting better and better for the xj now.
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Old 03-03-2019, 01:57 AM
  #4961  
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Default New exhaust manifold

Originally Posted by dev_daddy View Post
So you're a self proclaimed exhaust genius, eh? Then I call rocket scientist!
I need a new exhaust manifold on my 99 Cherokee sport. I donít know if I should go with a header or just a regular manifold. Kind of on a budget so Iím leaning toward just the manifold. Seems like theyíre under $100 with a gasket. My main question is, are these manifolds well built because I donít want to have to do this twice? Another question, from the videos Iíve seen it appears there is a lot of build up and crud inside intake and exhaust ports at the side of the head. Should those be cleaned out prior to installing the new manifold? I also plan on replacing the engine mount while I am in there, just for the heck of it. Any suggestions
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Old 03-14-2019, 01:24 PM
  #4962  
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looking for quiet and cheap that tucks in well (i do some rock crawling) sugestions?
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