blacknbluexj

taking my jeep to a local exhuast shop with good prices cuz my buddy cant weld and my muffler fell off...again...so im going to upgrade my pipe sizes and just re do from the cat back. was thinking about doing 2 1/2 in? any one have 3in? i do like it loud

sportrider

2.5 is as big as I'd run. I work at a midas I built a system for my XJ if you try and run 3" it will crimp at the bends going over the axle and will cause a clearance issue with the spring hanger, unless you drop it way down. then you'll just smash it anyways when you go wheeling.

brookhart63

Try searching.
https://www.cherokeeforum.com/f67/al...o-here-103854/

blacknbluexj

ok i was gonna do 2.5 but wanted to hear if any one has done bigger if it sounds alright. do you know if its possible to change a muffler that is 2 1/4 in and out to a 2 1/2 in and out so i dont need to buy a new muffler?

blacknbluexj

and go through 20 pages to find my answer...

sportrider

no the neck is 2.25, you can swedge the neck to accept 2.5" pipe though but the opening in the muffler will still only be 2.25.

brookhart63

Thats what it is there for. So there are not 20 noobs asking the same S*** every freakin day. Everyday is tuesday anymore.

Go on youtube and look at different exhaust setups on that site. 2.5 is common and 3" is used for 4.7's. You can buy adapters at any auto parts stores in the exhaust section so you dont have to change your muffler. Why make it 3" from the cat back? Go 2.5 cat back. Its cheap and easy to do.

blacknbluexj

so would be better off buying the new muffler with the bigger pipes...thanks...for actually helping haha

blacknbluexj

i dont need "different exhuast set ups" i know what i want..had a simple question..and it got answered..

sportrider

it's a minor restriction but in reality unless you've got a built motor I hardly doubt you'd notice the difference. I'm running a 40 series flowmaster, 2.5" from the cat back. I was still running the stock tailpipe til last week. the main reason I built a new tailpipe was to tuck it up higher under the truck and the stock pipe was pretty rusty. I can't "feel" any difference in performance maybe on a dyno but I don't know. I do know it will be a lot harder to hit my tailpipe on obsticals now when I'm out wheeling.

blacknbluexj

not stock motor, prob gonna have them do the tailpipe while im at it