September 3, 2003Would anyone care to explain how this works?
September 3, 2003No idea but i would like to ask what muffler that is....seems thats one restrictive arse muffler though!
September 3, 2003It`s a Spintech.
Quite the opposite. It`s not as restricting as you would think. Look a little closer and you can see that it looks like a chese grater on the opposite sides of the openings on the casings? that lets the gas out. Not to mention they sound great too.
[ 09-03-2003, 11:11 PM: Message edited by: Dave ]
September 3, 2003
quote:That`s what I got straight off their website. Not as in-depth as I was hoping for, but it`s basic and easy enough to understand. Now, would anyone like to expand on what they just said and help me to understand better how this setup works so well? *AhemYelocoughSignmaster*
Traditional muffler designs remove sound in two ways: friction and absorption. Friction mufflers (stock type, turbo type, chambered) have high back pressure and can cause extreme high resonance and noise inside the vehicle at certain engine speeds (2000 to 3000) RPM.
Absorption (packed mufflers) have a straight through design, they can have good flow but the packing begins to deteriorate and get louder as they wear out, and with modern engines the heat is very high which destroys the packing even quicker.
Spin Tech`s patented design provides maximum performance for today`s modern engines. Its all done by means of a Spin sound trap, which captures sound vibration (noise) and turns it into heat within the muffler case. As exhaust gases enter they are routed to the spin traps which create a high velocity vortex trapping the sound waves. The extremely high flow rates are achieved by a unique internal scavenging system that creates a venturi effect.
September 4, 2003Dave, Looking at the picture and assuming the inlet is on the left, the exhaust gas would travel through the areas of least resistance, meaning down the center of the 6 curls, which would then create little vortexes of air/exhaust inside the curls. The three on top would be counterclockwise and the three on the bottom would be clockwise. The vortexes would then suck more exhaust into them through the `cheesegrater` holes allowing for better flow. I guess the `spinning air` would make it`s own sound vibrations probably cancelling out some of the engine`s sound leaving only the deep tones ...... Looks like a pretty neat design ... Stainless?
September 4, 2003Hmm, I was thinking the In side was on the right. Now Idk..and they don`t say on their website which is in, which is out. Looks aluminized to me.
Too bad they`re not too pocket friendly ; check out the prices: http://www.spintechmufflers.com/spintech/products.asp?order=partno&Otype=street&category=15 And I was thinking about getting a couple for the Cutlass.....
[ 09-04-2003, 10:41 PM: Message edited by: Dave ]
September 13, 2003They do sound good, as for performance I might have to talk to my dyno guy and see if he has tested any. Fmthefixer your theory sounds like it would work, maybe you should email them so they can add it to their discription, After some compensation of course...maybe a couple of freebies I don`t want to seem like i am butting into post, found this forum a while ago and and have been lurking. Decided to sign up because their are some knowledgeable people here.