MORE EXHAUST antics! (...long read, good drawing...) - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 06-14-2003, 10:21 PM   #11
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Quote:
Anybody have the factory part #'* for those mufflers?
I wonder what they look like INSIDE.
Most factory mufflers all look the same on the inside. Perforated inlet tube, then a baffle with a hole in it, then a perforated outlet tube. The two tubes are not connected, so the exhaust gases have to go thru the baffle.
The differences may be tube diameter, size of can size.

The low restriction aftermarket units, like Borla, just us a straight thru perforated pipe that is bent slightly, and then tune the sound based on engine displacement with different size cans. I like them the best because they sound great and are all stainless, so they last forever.
Unless the GM muffler is a stainless steel unit, you'd be better off with an aftermarket one. The key is size of the can. Usually the bigger it is, the less restrictive and quieter it is....but not always. Internals do have some effect, like Flowmaster units, that use a unique internal baffle arrangement with no interior perforated pipes.
Everyone has different tastes when it comes to sound but performance is directly related to pressure drop.
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Old 06-14-2003, 10:45 PM   #12
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I really can appreciate the sound of the stock muffler and 87-91 SE Bonnevilles, the came stock with stiffer suspension and performance exhaust made of low grade stainless steel..not bad for stock. I would have kept mine, but the muffler had started to rust out on the top and I didn't really like how the tips (dual) pointed downwards....

Oh well, the new one is betta
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Old 06-14-2003, 11:07 PM   #13
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Here'* some links to play with:

Jeep with the LONG Cherry Bomb I had to bring back (#87516) and exchange for the shorter one(#87510). This has SOUNDS.
http://www.mike-g.net/jeep/yinyang/pics/muffler/

Cherry Bomb PDF with diagrams and dimensions:
http://www.supremeexhaust.com/Pics/C...SPEC_CBomb.pdf

Maremont/Arvin site:
http://www.maremont.com/

Thrush PDF with diagrams and dimensions:
(here you can see they didn't have one that would fit very well...)
http://www.dynomax.com/documents/thrushglass.pdf

This guy installed a Cherry Bomb on a GTI-V6:
http://www.gti-vr6.net/library/engin...erry_Bomb.html

GM Exhaust Sounds:
http://www.exhaustsoundclips.com/gm.html

Toyota V-6 Exhaust Sounds with various mufflers:
http://www.pnw4runners.com/exhaust/exhaust.htm

Various Muffler Sound Descriptions:
http://racetruck.tripod.com/muffler.html

Have Fun.
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Old 06-15-2003, 01:43 AM   #14
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BusMaster007 your on crack .....
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Old 06-15-2003, 02:09 AM   #15
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Quote:
Originally Posted by russianpolarbear
BusMaster007 your on crack .....
Now why would you say a thing like that?

P.*. You're a College Student and insult ME with a misspelling? :P
Careful, now.
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Old 06-17-2003, 06:24 PM   #16
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Bus, I can't see that image on the first post
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Old 06-17-2003, 11:53 PM   #17
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B-94,

I can't paste that diagram on here or the personal messages, sorry.
I answered your PM'*, though.
That should explain it.

Good Luck, and don't take any $hit.
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Old 06-19-2003, 05:57 PM   #18
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I'll be getting a recording of the present system tonight, Thursday.
Should get one of the system with the 'absorption style' Cherry Bomb glasspack this weekend or next week.
When both recordings are done, I'll find a way to post them.
The tip/deflector part of the project will be next.

Appointment at Bob'* Exhaust Specialties at 0800 Friday.
I'll know on the way to work by 1030 if my diabolical plan is good or if I'm on crack!
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Old 06-19-2003, 06:14 PM   #19
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Hope it works out!!!!
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Old 06-21-2003, 02:32 AM   #20
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CHERRY BOMB IN.
RICE OUT!!!

It worked.
I ain't no crack ho.

Got pix.
Will get second recording soon.
Will post for comparison.

That nasty sound has all but disappeared.
There is still some noise, but nothing like it was before.
What I mean is that there is still the growl, but not the unbridled banshee from hell sound...like it was totally raw. NOW, it almost has a classy performance rumble to it.
Definetly V-6 sounds to it.
Amazing.
I believe I got some throttle response back, and if I'm not mistaken, acceleration and overall operation are smoother yet.
I'm happy with this so far.

The video/sound is in QuickTime format.
How do I make this available for the Forum readers?
Once these are done, do I e-mail 'em here, or what?
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