wondering what the factory exhaust pipe sizes are at the muffler inlet and outlet. i have seen 2 1/4 and 2 1/2, is this correct and which is it? if i get a muffler with a 2 1/2 inlet and outlet then it wont fit on a 2 1/2 inch pipe will it? the next size up is 3" right?also the factory length so i dont have to buy adapters and elbows. i am buying a muffler and want to get the right size the first time so i dont have to mess around with having to go back to the store for more or different parts. thanks for any explaination and help...

 

I measured 2.5" OD which leads me to believe 2.25" ID.

 

so what size inlet and outlet do i want when i buy a muffler? do i want the in and outlets to go OVER the exhaust pipe, or inside the pipe? sorry for the dumb questions, i know this is pretty basic stuff.

 

2.5 in and 2.25 out (if going dual) otherwise another 2.5

 

you're better off just buying a 2.5 o/d in/out muffler and having a shop weld it in. it will last longer and you dont have to worry about clamping and so on.

 

thank you...i just wanted to make sure what size to buy. want to buy it myself and then have it installed since i know a muffler shop marks up their stuff more than a parts store does..

 

When I buy mufflers, I buy whatever size the ID is. When I did exhaust work on my Neons, a 2.25" size muffler would still fit OVER the existing piping which was 2.25" ID. I have a couple of 2.25"'s laying around for my truck, I just can't decide how loud I want it to be...

I'll be doing a write up on my Dakota exhaust work whenever I get around to doing that (as well as a cat more than likely).

You could also try installing the muffler yourself and then temporarily clamping it on to drive it to a shop to have them weld it up quickly.

 

thanks for all your help guys...this site is great even for the small questions