How do I make a 328 quieter?

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Author Message Spyder (Spyder) New member Username: Spyder Post Number: 13 Registered: 10-2002 Posted on Tuesday, March 11, 2003 - 10:32 pm:    Check your muffler, it might have a hole in it, or the baffles might be rusted out on the inside. Russ Turner (Snj5) New member Username: Snj5 Post Number: 17 Registered: 2-2003 Posted on Tuesday, March 11, 2003 - 8:28 pm:    The thing that made my Mondial a bit quieter was changing from the OEM Eagle tires to Pirellis. The road noise change is amazing. The original tires really roar. Dr Tommy Cosgrove (Vwalfa4re) Member Username: Vwalfa4re Post Number: 722 Registered: 5-2001 Posted on Tuesday, March 11, 2003 - 7:53 pm:    That's funny Jim Schad (Jim_schad) Member Username: Jim_schad Post Number: 818 Registered: 7-2002 Posted on Tuesday, March 11, 2003 - 7:36 pm:    Give it to me and you will never hear it again. Chris Parr (Cmparrf40) Member Username: Cmparrf40 Post Number: 574 Registered: 3-2002 Posted on Tuesday, March 11, 2003 - 7:35 pm:    The motor mounts on 308's and 328's fail and cause a lot of vibration to enter the car. In extreme examples, the motor mounts will collapse enough to allow the headers to contact the frame and you get major vibrations. The other thing is, these cars are loud, supposed to be loud, but I know my 308 got significantly quieter after new mounts were installed. Mark Eberhardt (Me_k) Member Username: Me_k Post Number: 422 Registered: 5-2002 Posted on Tuesday, March 11, 2003 - 7:28 pm:    I did both the louder stereo and used every product dynamat makes in my 308. The dynamat helped make it quieter, but not as much as I had hoped and I put the stuff everywhere. 600 watts of amps and proper speakers allows the stereo to be heard under any driving conditions, but is hard on the ears. I guess a 360 is probably the best answer. Dave Goldman (Dave328) Junior Member Username: Dave328 Post Number: 104 Registered: 11-2002 Posted on Tuesday, March 11, 2003 - 5:53 pm:    Ross, you can find Dynamat at just about any car stereo shop. It's primarily used to stop unwanted noises and vibrations associated with high power car audio systems. www.crutchfield.com also has it for sure online. Dave Russ Turner (Snj5) New member Username: Snj5 Post Number: 16 Registered: 2-2003 Posted on Tuesday, March 11, 2003 - 5:46 pm:    Does anyone have experience, source or information on this Dynamat stuff? many thanks Russ Dave Goldman (Dave328) Junior Member Username: Dave328 Post Number: 103 Registered: 11-2002 Posted on Tuesday, March 11, 2003 - 5:41 pm:    Ditto on Matt's suggestion. I had an annoying resonnance at certain rpms that turned out to be the right side air intake ductwork contacting the body. Dave Marq J Ruben (Qferrari) Member Username: Qferrari Post Number: 251 Registered: 2-2002 Posted on Tuesday, March 11, 2003 - 5:16 pm:    Good one, DJ. DJParks (Djparks) Junior Member Username: Djparks Post Number: 63 Registered: 2-2003 Posted on Tuesday, March 11, 2003 - 4:10 pm:    Turn the key to the far left. Tyler (Bahiaau) Member Username: Bahiaau Post Number: 606 Registered: 12-2001 Posted on Tuesday, March 11, 2003 - 4:09 pm:    By trading it for a 360? Seriously, if you really want to make it quieter you might try Dynamat or a similar product. Also check to see that your exhaust is stock and not a Tubi. Barney Guzzo (Trinacria) Junior Member Username: Trinacria Post Number: 152 Registered: 8-2002 Posted on Tuesday, March 11, 2003 - 4:00 pm:    Sell it? Don't drive over 3499 rpm? Just keep it over 4501 rpm all the time so you just hear it once. Buy a louder stereo? j scott leonard (Jscott) Member Username: Jscott Post Number: 314 Registered: 1-2002 Posted on Tuesday, March 11, 2003 - 3:53 pm:    Isn't the sound of the engine better than any song on the stereo? DES (Sickspeed) Advanced Member Username: Sickspeed Post Number: 2754 Registered: 8-2002 Posted on Tuesday, March 11, 2003 - 3:50 pm:    LOL... Pat Pasqualini (Enzo) Member Username: Enzo Post Number: 279 Registered: 2-2002 Posted on Tuesday, March 11, 2003 - 3:50 pm:    Pat Pasqualini (Enzo) Member Username: Enzo Post Number: 278 Registered: 2-2002 Posted on Tuesday, March 11, 2003 - 3:48 pm:    . DES (Sickspeed) Advanced Member Username: Sickspeed Post Number: 2751 Registered: 8-2002 Posted on Tuesday, March 11, 2003 - 3:44 pm:    ••••, Bruno, you beat me to it- that's the perfect answer... Bruno (Originalsinner) Intermediate Member Username: Originalsinner Post Number: 1052 Registered: 5-2002 Posted on Tuesday, March 11, 2003 - 3:43 pm:    easier and cheaper to make the stereo louder Matt Lemus (Mlemus) Advanced Member Username: Mlemus Post Number: 2911 Registered: 8-2002 Posted on Tuesday, March 11, 2003 - 3:19 pm:    I had the same problem. the air inlet was touching the pass wheel cover. Rob Lay (Rob328gts) Board Administrator Username: Rob328gts Post Number: 3994 Registered: 12-2000 Posted on Tuesday, March 11, 2003 - 3:01 pm:    I don't know if yours is louder than mine at those RPM's. Mine causes annoying vibrations at 2500-3500, but not sound. Hmm, sure you have cats and stock exhaust? If so, then I don't know, maybe there are exhaust systems that are quieter. Check out the Stirling Exhausts advertised in Forza and the sort. They're a stock replacement and might be able to do something custom. Tillman Strahan (Tillman) Member Username: Tillman Post Number: 441 Registered: 11-2001 Posted on Tuesday, March 11, 2003 - 2:56 pm:    Yes, I know, but still.... My car has an annoying resonance/booming around 3500-4500 RPM, which is approximately 70-90 MPH (safe highway speeds around here). Since I drive it quite a bit, I would like to be able to hear the stereo from time to time. Any ideas on making it slightly quieter?