3.6 guys, let's talk muffler options

mjshira · 12-03-2006, 01:47 PM

My car is FINALLY nearly ready to be back on the road. I finished the majority of the carpet today and with the exception of some powdercoating, I am nearly done with the interior (don't mention electrical, that is another story).

I have Timmon's Header/Heat set up for performance 3.6 conversions. At present the muffler is an 18 inch flowmaster with some resonators in front of it.

What I'd like to do is run a larger flowmaster since I have the room back there to do so. Many of you have recommended the 'biggest' muffler I can fit being the one I go with, so I think this is it

http://www.flowmastermufflers.com/products/index.php?main_page=product_info&products_id=3337

Here are some pictures, sorry if the quality is a bit poor, I didn't want to open the garage as it is below 30 here today.

here is a shot, notice the room on either side. I measured and I have room for a 28 inch long muffler. the second shot shows the side view of the current exhaust. The current bracket (which was not set up for an early 911) causes the muffler to be at an angle.

This will be different once I get her to the muffler shop. I plan to keep the resonators. With the type of connection these Headers/HE's have, I can move the connection into them up/down or laterally.

Bill Verburg · Bill Verburg's Garage

You need to use an 80 seried x-flow muffler, the 50 AFAIK is not a x-flow design.

Steve probably supplied you w/ the correct muffler. If you can fit resonators that's a big +

mjshira · 12-03-2006, 02:38 PM

hi Bill

I didn't get this muffler from Steve directly and I'd like to run a larger one. I will keep the resonators. You mention 'x-flow'. I will research that but from what you are saying I can't run this muffler?

mjshira · 12-03-2006, 02:45 PM

What about this one?

http://www.magnaflow.com/02product/shopexd.asp?zone=main&id=494

Bill Verburg · Bill Verburg's Garage

You could run it , but you will be inputting to an outlet and outputting to an inlet. God only knows what the net effect will be.

Here's mine w/ an 80 series x-flow, don't know how you are going to fit the resonators

The Magnaflows are supposed to be somewhat mellower

mjshira · 12-03-2006, 02:50 PM

thanks.

The magnaflow link and muffler I found says it is an 'Tru-X Perforated Core'. Not sure if that is the same.

I will check flowmasters site for the series you are running. How loud would you say your set up is?

klaucke · 12-03-2006, 03:06 PM

Quote:

Originally posted by Bill Verburg
If you can fit resonators that's a big +

Bill, could you elaborate on what advantages resonators give? Is it an added scavenging effect (and if so, specifically, certain specific RPM or wider band of improved scavenging, etc)?

In all the pictures I've seen of full race exhausts, I can't recall seeing any resonators. Perhaps this was because they lack mufflers and are often set up for peak performance in a narrow band.

Bill Verburg · Bill Verburg's Garage

Quote:

Originally posted by klaucke
Bill, could you elaborate on what advantages resonators give? Is it an added scavenging effect (and if so, specifically, certain specific RPM or wider band of improved scavenging, etc)?

In all the pictures I've seen of full race exhausts, I can't recall seeing any resonators. Perhaps this was because they lack mufflers and are often set up for peak performance in a narrow band.

No, resonators just take the hard edge off the sound, these things are loud, they do sound great but are not for most people

Moses · 12-03-2006, 06:44 PM

Dynomax #17725

Simply the best sounding muffler for your application. If you are in the Bay Area, come by and drive my car. Sweet music. I had a Flowmaster and dumped that raspy beast within a week.

The Dynomax is louder than stock at idle, but you can easily have a conversation at normal levels. At 5000 RPM's the the thing wails.Sweet flat six howling.

Honestly? If my Dynomax broke and I needed a new muffler, I'd pay $500 for it. Good thing they only run about $100.

Joeaksa · 12-03-2006, 08:45 PM

James,

Is the small coffee can unit (last photo) on your exhaust a cat or resonator?

Suggestions for those of us who need a cat? Has anyone seen Bens exhaust system for the 3.6 with 993 HE's?

Joe

JP911 · JP911's Garage

I have one of Ben's mufflers that bolts directly to 993 HEs (no cat). It's a simple 2-in, 1-out design similar to what he offers for SSIs, but with different flanges and the appropriate bends. It's a well made piece and very lightweight. My only complaint is that it's a bit too loud for a street car, but I must say that the sound is amazing. I have since switched to a triad 2-in, 2-out with the right tip hidden and my sound problem is solved.

Joeaksa · 12-03-2006, 09:47 PM

Jon,

Interested in selling the old muffler?

Joe

Jims5543 · 12-03-2006, 09:52 PM

My 3.6 has headers going into a 964 Cat with custom pipes welded on to it no mufflers at all. I can take pics if you want to see.

The result is very loud at WOT and deep with a purposefull sound when cruising.

At highwayspeeds there is quite a bit of cabin noise and droning expecially at 75 MPH at 90 is actually quiet.

JP911 · JP911's Garage

Joe-
I'm going to hang onto it as a backup for now. Contact Ben, he can make one for you.

Joeaksa · 12-03-2006, 10:06 PM

Jim,

Would love to see some photos. Did you use 993 HE's?

Jon, understand but wanted to see.

Thx,

Joe

Mike Feinstein · Mike Feinstein's Garage

Here's a couple of options with stock HE's:

Triad (perfect street sound and performance IMO):

And a custom rig for track (quite loud, but great flow):

Some prefer a cross-over pipe on 993 motors. This one was built by MWR Racing who insisted on this approach. Mufflers are 5.5" Dynatek's.

PcarPhil · 12-04-2006, 04:43 AM

Quote:

Originally posted by JP911
Joe-
I'm going to hang onto it as a backup for now. Contact Ben, he can make one for you.

Which flanges do you have on your 993 HE's? Round or oval?

Thanks,

mjshira · 12-04-2006, 05:03 AM

Quote:

Originally posted by Joeaksa
James,

Is the small coffee can unit (last photo) on your exhaust a cat or resonator?

Suggestions for those of us who need a cat? Has anyone seen Bens exhaust system for the 3.6 with 993 HE's?

Joe

those are resonators, as Bill said, they take the edge off headers. Keep in mind, these exhausts that he and I have are basically headers with an HE built around them so the noise level is there in a big way.

thanks for the other posts guys, I will check on the dynomax muffler option to.

mjshira · 12-04-2006, 05:05 AM

Quote:

Originally posted by Mike Feinstein
Here's a couple of options with stock HE's:

Triad (perfect street sound and performance IMO):

And a custom rig for track (quite loud, but great flow):

Some prefer a cross-over pipe on 993 motors. This one was built by MWR Racing who insisted on this approach. Mufflers are 5.5" Dynatek's.

Mike, those are good options for a later model car. The problem with the early car is that you don't have as much rear valance to 'hide' things under. I also think that if you have any performance mods to your 3.6 as I do you'll want something that will be more performance oriented that 993 HE's. That said, there is nothing 'wrong' with them, I just this B&B or Timmon's HE's are better.

mjshira · 12-04-2006, 05:09 AM

Quote:

Originally posted by Moses
Dynomax #17725

Simply the best sounding muffler for your application. If you are in the Bay Area, come by and drive my car. Sweet music. I had a Flowmaster and dumped that raspy beast within a week.

The Dynomax is louder than stock at idle, but you can easily have a conversation at normal levels. At 5000 RPM's the the thing wails.Sweet flat six howling.

Honestly? If my Dynomax broke and I needed a new muffler, I'd pay $500 for it. Good thing they only run about $100.

Moses,

I grew up in the bay area but moved away in 94. Otherwise I'd take you up on your generous offer. If I lived there I'd probably hardly get to drive my car either as a certain individual lives there now who has a way of driving the tires off her!