Search the Community

I'm sure there are probably several other threads about this already. I did searches but didn't find quite what I was looking for. I have holes in the down pipe, I don't have a cat but don't see any evidence that I ever did. All the pipe and hangers and everything seem to be where they should be. So I'm looking at replacing everything from the exhaust header down. I have never done this and have questions. Everything appears to be bolted on, is this correct? I would like to add the cat back on. I assume I had one from the factory, but it sure doesn't look like it. Then my other question is, what mufflers will give me the best sound? I don't want something annoying, but I'd like a good growl if it's possible from a 4.0L. I've found the pipe online for like 30 bucks each. So what else do I need? Gaskets? Hangers? Clamps? Any input would be great. Thanks all. 1989 Pioneer. 4.0L Long Bed.

I'm sure there are probably several other threads about this already. I did searches but didn't find quite what I was looking for. I have holes in the down pipe, I don't have a cat but don't see any evidence that I ever did. All the pipe and hangers and everything seem to be where they should be. So I'm looking at replacing everything from the exhaust header down. I have never done this and have questions. Everything appears to be bolted on, is this correct? I would like to add the cat back on. I assume I had one from the factory, but it sure doesn't look like it. Then my other question is, what mufflers will give me the best sound? I don't want something annoying, but I'd like a good growl if it's possible from a 4.0L. I've found the pipe online for like 30 bucks each. So what else do I need? Gaskets? Hangers? Clamps? Any input would be great. Thanks all.

I am in the process of replacing my manifold. I am not gonna weld it where its cracked am gonna buy a new one. I am working on a 89 4.0 L not worried at all about the old exhaust system, itll be replaced next thing front to back as i believe the cat is stopped up. And the muffler has a monster hole it. Sounded like a race car when i would get on it First question: Been searching around for a couple days looking through page after page of Aftermarket header and manifolds. Would love the Pacesetter Header!! :bowdown: http://www.quadratec.com/products/77604_701.htm?gclid=Cj0KEQjw_9-9BRCqpZeZhLeOg68BEiQAOviWAnToJbPH-5vxW46kg5PLt_olHbmCY-xh-nh__t5iPwcaAu998P8HAQ but for $233! I am gonna keep looking around. Found some good ones and then i ran across this http://teamcherokee.com/exhaust-manifold-assembly-cherokee-comanche-4-0-liter-1991-1999/ the First and sixth tube have flex joints made into them. Very cool cause this is were alot of them crack. I was Planning on doing the flex joint around the bottom near the oil pan anyways. I personally think that this thing looks cheap and is also cheaper then you can find a stock one on most sites and in parts stores... I did how ever run across this one http://www.1aauto.com/1987-90-jeep-exhaust-manifold/i/1aeem00024?f=333781&y=1989&utm_campaign=gb_csv_br&utm_content=EEM&scid=scplp1AEEM00024-333781-1989&sc_intid=1AEEM00024-333781-1989&gclid=Cj0KEQjw_9-9BRCqpZeZhLeOg68BEiQAOviWAnZjAW36YgBeYDxnpH4TpcM-DeNf6DDZ6O6kdTv65e0aArAF8P8HAQ Second question: Is a header really gonna make a difference compared to a stock manifold? If so what kind? If you guys have had any good experiences with buying a replacement manifold or a header let me know! I am open to ideas