Quietest mufflers???

rockcity

rockcity

everyday is a chance to get better
Joined
Apr 10, 2005
Location
Greenville, NC
im looking for a really quiet muffler for the buggy. I had some inline mufflers on the 1st go-round but they were far from quiet. The new buggy is a 4 seater for the wife and kids, so it must be quiet and not obnoxious to them or they won't want to ride.

The motor is an LS1. I like a deep throaty sound but really want it to be as quiet as possible for the kids.

Priorities in a muffler (in order)
1. Quiet
2. Inline and sleek
3. Compact


Materials can be steel or stainless.
Need 3" inlet and outlet
Single in and single out


Would prefer something that is round and no more than 6" diameter but am mostly looking for something that is quiet. I would consider most any muffler so long as it's quiet and doesn't choke the LS1 too bad.

Thoughts?
 
Super turbo? I'll have to check those out.

I had dual glass packs on the last buggy and they were OK but want something quieter
 
You said you didn't want to choke the motor, so nothing flowmaster makes should go on it....I switched to a DynoMax 3" dual in/dual out with an internal X pipe from two separate flowmasters and noticed a large increase in power. Very mellow sound, no drone, and great quality.
 
did you alos have an x over in the two flows?
That scavenging could have as much effect as anything.

Rob, you know what the dynomaxs sounded like on my 6....Rice boys with coffee cans were jealous
 
Croatan_Kid said:
so nothing flowmaster makes should go on it
Click to expand...

Flowmaster 50 on the TJ is built like a tank. Dropped and dragged it across all sorts of stuff with no effect... but it's loud and drones. Hate it.
 
Single muffler, I presume?


You're really locked into limited options with a 6" round case. Quiet is a relative term, unfortunately, and I'm betting your best searching will be for the highest flowing Donalsdon muffler (i.e. diesel/industrial apps.) available with the required dimensions for a truly 'quiet' muffler.

After that, you're pretty much into the Hushpower-type of muffler and large-cased perforated core glass packs. Super-turbo mufflers are limited to the oval case design for the most part, however you may find some variants in a slim case, but the flow-through tubes are much smaller than the inlet/outlet....which I wouldn't want on that LS1.

You could try to do some type of dual-muffler setup with a very short glass pack closer to the headers, and then a final muffler toward the rear, but I'm not too familiar with the available space along the exhaust routing area on your buggy.
 
I had dual glass packs on it at one time so there is some room, but not much. I'm moving everything over to the driver side because the muffler under the passenger seat got REALLY hot. Ask @Ron and Brad Carrier about that :lol: Moving forward, since I have time and a few extra $ to make things right, might as well solve the hot seat issue and put everything on the driver side. I do have a little room but not much.

I ended up ordering a 3" in/out hush power muffler that is 4.75" tall and 9.5" wide oval style. It is 24" long, so it should fit just right where my old 22" long glass pack was. We shall see.

I thought about running a small muffler after the manifolds but I don't think I have the space given the routing that is needed.
 
What about a supertrap at the rear after the hushpower
 
BTW I was telling someone that story over Christmas. The just knew I was lieing. Refused to believe I actually chose to literally sit on a rock for 2 days of wheeling rather than sit on the seat.
 
Ron said:
What about a supertrap at the rear after the hushpower
Click to expand...

I'll take that one step further - a resonated 'tip' of some sorts will knock off quite a bit of bark. That can be either in the form of the awesome accessories at Vatozone, or an actual shorty glass-pack
 
The muffler will be up under the driver seat, so it will be up pretty close to the engine as much as reasonably possible.

Not sure how much room I will have after the muffler. We are exiting out the driver side just in front of the left rear tire. This was due mostly due to fitment. I really wanted to route it out the back but out the side is the best I could do at the moment. If that becomes an issue, I will look at more options for routing it out the back. Given that, I don't have much room between the muffler and the tip. I guess I can see what I can fit in there for additional suppression.

I'm mostly concerned with noise reduction than performance, although I don't want a complete dog of an exhaust system!
 
A single 3" setup flows very well. I'll also mention that I went back to cats on my truck when I switched up the exhaust. I got tired of it always smelling like it was running rich even though it wasn't. Not sure if you're going to run a cat or not (probably not), but that'll help quiet it down some.

A 24" length probably means it has an 18" case, so that should be fairly quiet.
 
Now that you have a four seater with a trunk, why not run the pipes all the way to the back and put a big muffler above or slightly aft of the rear axle?
 
the ass end sits so low due to the "trunk", that anything down there will be gone the first time I take it down a gravel road.

Really, the layout just doesn't allow for much of an exhaust past the rear axle. to make it work, I'd have to box out an area in the floor of the rear to run the exhaust. and at that, the muffler would still be the same and still under the driver seat. so the only advantage would be routing.

the case length is 24" with an OAL of 29". Should be relatively quite for the most part. :)
 
rockcity said:
the ass end sits so low due to the "trunk", that anything down there will be gone the first time I take it down a gravel road.

Really, the layout just doesn't allow for much of an exhaust past the rear axle. to make it work, I'd have to box out an area in the floor of the rear to run the exhaust. and at that, the muffler would still be the same and still under the driver seat. so the only advantage would be routing.

the case length is 24" with an OAL of 29". Should be relatively quite for the most part. :)
Click to expand...

I can tell you from first-hand experience that getting the outlet of the exhaust as far away from the passenger compartment as possible has as much to do with loudness as anything.

How is locating the muffler under the driver's seat going to be different from the previous design, where it was located under the passenger seat? Won't the driver's seat now get hot?

Might want to talk with your chassis builder about why there's no possible way to route a 3" pipe to the rear of the vehicle. Seems like a significant oversight.
 
There used to be a muffler under each seat. I chose to go 2 into 1 to eliminate the muffler under the passenger seat (I'm sure Ron and Brad can understand the need!).

There is a way to route the exhaust to the back of the chassis, just not the way I want it at the moment; there is just way too much I've packed in the trunk to make it viable.
 
Stacks.
 
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