I need a stock axleback/muffler for my 90 EF hatch and the only one I found was one off of an 89. The part #'s are different, but does anyone know how they differ? Is the flange where it bolts up different?

 

I think the only diff is the tip on the muffler (not 100%) but it will bolt up.

 

both the 88-89 and the 90-91 mufflers are different. they will not bolt up. the 88-89 havean exhaust flange (donut) on the part where the axle back bolts up. the 90-91 models dont. if you want to use the 90 version on your 89 make sure to grab the B-pipe as well so it will bolt up. and i dont remember but the 88-89 and the 90-91 use different style bolts on the axle back. one is spring loaded and the other has welded nuts on the b-pipe but i dont remember which is which.

 

Awesome. Thanks for the info. I believe the 90-91 are the spring loaded ones, which is what I have.

 

no prob. just so you know the civic n crx mufflers from the axle back are the same. i ran a crx muffler on my hb before i sold it. looked nice too.

 

Oooh very nice. Does the same thing apply? I mean regarding the different flanges?

 

the flanges from the 89 crx si bolted up and the hangers also fit perfectly on my 89 HB.

 

Very cool. I know a junk yard with a few CRX's, so I will check that out as soon as I get a chance.

 

i have a 89 honda civic and mine has the spring loaded pipe on it

 

to you. The car is parked at my parent's house and I haven't looked at the flange for a while. I didn't expect anyone to "quote" me on that.

The word believe in my sentence clearly indicated that I wasn't sure. And by "what I have," I was referring to the year of my car. Thanks
for clarifying that for me though. Now I am 110% sure that I must get a 90-91 axleback.