Back in Black -- and a Soup Can question

[Jack Olsen]

The muffler is black, now.

This picture shows the soup-can cap I'm using to block off the right-side outlet to keep things quieter in city driving.

My question: is there any downside to blocking off one of the two outlets?

It's a Flowmaster 80 series model, which appears to have a common chamber that both inlets empty into. Here's an x-ray of the model I have, although I have two inlets instead of one.



Any thoughts?

[Zeke]

This may weel be a stupid question, but was one pipe louder than the other? What made you chose the right side?

I think I'd play around with it a bit. Maybe an insert for each tailpipe. Sorta like the old WV tips which were part of the muffler system. They had a perforated lining to suppress noise.

[TigerTrash]

Good Lord Jack....Your car looks so AWSOME from the rear!

[raceman]

nice butt

[Kraftwerk]

I would feel ripped off if that car drove me by without BOTH pipes exhaleing...

[MRM]

You'll lose some gas mileage, but I don't think it will hurt anything.

[Jack Olsen]

Without the soup can, this morning:

[JTO]

Jack,
No soup can. As said above, give 'em the full aural (sp?) treatment. Don't be a mechanical music miser!
Troy

[Rot 911]

Jack do you put down a nice drop cloth before you lay on the ground to take those pics or just in a manly way flop down to the pavement and start snapping?

[bigrubberjeep]

You could always use a potato to block off the sound on the way to work, then add butter and sour cream and wala! You got baked potato!

[IROC]

Yeah - forget plugging up exhaust outlets - that is an incredible picture. That picture restored order in the universe after that recent thread showing the ricer cars in Japan...

Mike

[Zeke]

Originally posted by Zeke
This may weel be a stupid question, but was one pipe louder than the other? What made you chose the right side?

I think I'd play around with it a bit. Maybe an insert for each tailpipe. Sorta like the old WV tips which were part of the muffler system. They had a perforated lining to suppress noise.

I guess it WAS a stupid question.

[DonDavis]

Jack,

Which muffler was installed last Oct for the drive I rode with you? That setup was ok. Then again, that was just a few hours for me and I didn't care how loud. It was an awesome day!

And as I remember, the conversations did take a little more effort as the day wore on. Is the one you now have more quiet? And which paint did you use? I'm doing the same thing soon.

[Jack Olsen]

Sorry, Zeke. By trial and error (and looking at the way the old RSR's and RS's would block off their sport muffler outlets) I discovered that the overall volume of the muffler would go down sigificantly by capping one of the two outlets. Obviously, if the two headers didn't lead into a common chamber, this would be an engine-destroying idea.

Reducing the size of each side would probably have a similar effect, but the fact that Flowmaster makes the same muffler with single and dual outlets suggests it's safe, and it's very simple to pop the soup can on or off.

[maxnine11]

where do you source the magnetic soup cans ??

[Jim Richards]

Jack, get a small GruppeB logo to place on the end of that soup can, OK?

[Jack Olsen]

Don, the new muffler is louder than the old one (which was a B&B, with some mods), but the car is now quieter, because I've pieced in some sound-deadening pads in the back, which I can remove when noise isn't an issue.

[Zeke]

Originally posted by JackOlsen
Sorry, Zeke. By trial and error (and looking at the way the old RSR's and RS's would block off their sport muffler outlets) I discovered that the overall volume of the muffler would go down sigificantly by capping one of the two outlets. Obviously, if the two headers didn't lead into a common chamber, this would be an engine-destroying idea.

Reducing the size of each side would probably have a similar effect, but the fact that Flowmaster makes the same muffler with single and dual outlets suggests it's safe, and it's very simple to pop the soup can on or off.

I guess I'm thinking of the vanity side of this. Both sound and looks. I mean a soup can? I thought you might be looking for a semi permanent device to use on the street. It would also seem that the tone would be better coming from both pipes, but maybe it doesn't make any difference beacuse of what you say about the common chamber.

Anyway, the whole thing is novel. You put a soup can on your car with the end still in it and the ricers put a coffee can on theirs straight thru. You gotta wonder what they think when they see you on the boulevard.

[Bill Verburg]

There is so little inside of those things that it is hard to imagine how capping one side could adversely affect anything.

I like the black, another chore to do

[5axis]

Flaming tennis balls anyone?

This is a oldie!

http://forums.pelicanparts.com/showthread.php?threadid=32520&highlight=Tennis+AND+ball