Question about exhaust resonator

[4x4junkie]

I'm replacing the muffler on my BII w/2.9L, as the thing pretty much blew itself apart (putting a Magnaflow muffler on it).
Question: Should I replace that resonator thing that's after the muffler? Or should I just swap it out completely for a straight piece of pipe? (discovered it has a bunch of debris rattling around in it)
What does it do exactly anyway? Does it change the backpressure much? Will it be a lot louder without it? (I don't mind a little bit of exhaust sound, but I don't want to go deaf inside the truck while on the freeway).
I've been told a cheap glasspack can be substituted for it also, good idea?

Looking for some suggestions (haven't messed around with exhaust much).

Thanks guys

 

[4x4junkie]

bump

Anyone?

 

[farmer]

I'd say take it off. We cut the resonators off my buddies Buick and it sounded no different. I think all it does is change the sound/tone of the exhaust but doesn't quiet it.

 

[4x4junkie]

Yeah that's what I'm leaning toward doing. I guess if it does end up too noisy or "ricey" sounding I can always cut the pipe back out and splice something back in there.

Thanks for the reply

Anyone else before I go buy some pipe?

 

[farmer]

FWIW bigger pipe will make it sound deeper, 2 1/2" seems the standard

 

[ChrisR1S]

From what ive gathered from the cobalt ss forum i hang around, the resonator eliminates the "rasp" and that ricer sound common to a lot of 4 and 6 cylinder engines

 

[Ranger44]

I doubt cutting it out would hardly make a noticeable difference.

Do it.

 

[4x4junkie]

From what ive gathered from the cobalt ss forum i hang around, the resonator eliminates the "rasp" and that ricer sound common to a lot of 4 and 6 cylinder engines

This is exactly what I don't want. God I just f'in' hate that sound!

Alright, I dunno... I guess I'm gonna leave it out for now... see what happens. Looking at both "resonators" and "glasspacks", they both seem to be pretty much the same damn thing, so hopefully I can find something real quick, cheap & easy if I can't stand it.

Thanks for the replies guys.

 

[RangerFabWorks]

ill give you from my personal experiance.

i have a 98 explorer sohc 4.0

welded in a thrush di/so muffler with the stock piping in place.

left the resonator at first. sounded just like i wanted, nice rumble. no drone inside at all.

descided to remove the resonator. and i HATED IT.

it sounded great from the outside. but it droned so bad it gave me a headache.

i ended up putting the stock muffler back on.


in my opinion. replace the resonator, or put a short glasspack on.

youll thank me later.

 

[Ranger44]

Maybe.... SUV's, like the BII and Explorer, channel the sound differently because the passenger compartment is above the muffler, etc...unlike a truck as it's under the bed.

Guess I never really thought of it that way. Maybe in your case you should either leave it on or find a replacement.

 

[4x4junkie]

ill give you from my personal experiance.

i have a 98 explorer sohc 4.0

welded in a thrush di/so muffler with the stock piping in place.

left the resonator at first. sounded just like i wanted, nice rumble. no drone inside at all.

descided to remove the resonator. and i HATED IT.

it sounded great from the outside. but it droned so bad it gave me a headache.

i ended up putting the stock muffler back on.


in my opinion. replace the resonator, or put a short glasspack on.

youll thank me later.

Well where were you this morning? And yesterday?

It's all together now without a resonator... Haven't started it yet, but I guess I'll find out I hate it soon enough.

Do appreciate the info though. Guess I have to ask what prompted you to remove it if it was how you wanted it?

 

[RangerFabWorks]

i just saw the thread tonite

i thought it would have a more throatier sound if i removed it.


curiosity got the best of me. i regret it. but glad i put my stock muffler on.

 

[RangerFabWorks]

i just noticed you said you running a magnaflow muffler

it should be fine then

magnaflow says that there mufflers never have the resonance that chambered mufflers have.

my bad.

 

[4x4junkie]

Yeah j/k... I figured you had just read my post now lol
Well, that gives me some hope then. Tomorrow I should be able to take it for a drive and see what it sounds like.



Edit:
Didn't see Ranger44's post... Yeah that was one of my concerns (resonating through the floor). Should be easy enough to just cut a section out and stick a glasspack/resonator in there if needed though.

 

[4x4junkie]

Well, drive update... It's not too bad, throaty with a distinct V6 purr, but doesn't seem overbearing (the 5th gear clattering of my FM146 tranny is still louder lol). No raspiness or snappiness at high RPM or when I get on it (thankfully).
I'll need to get it on the freeway for a good distance to see if the droan gets to be annoying though (that transmission is currently the attention-getter inside).

In case anyone wonders, the muffler I used was a Magnaflow pt# 11224 (4x9x14" oval, center/offset) 2" (stock) piping from the muffler back (exiting straight out the rear with a very slight downturn), and a very short piece of 2¼" welded between the stock cat & muffler.