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excesive road/interior noise roaring/howling
One month ago I finally purchased my dream 82 911sc Slant Nose,now that I've put a few hundred miles on her, she seems to be getting louder and louder every time i drive her. I've had other muscle cars with similar extra wide tires that were not nearly as noisy. I've never owned or rode in an older Porsche before so i don't have a baseline to compare tol, however at 60 mph it exceeds 90 decibels.
What are normal sound levels, should i be concerned that something is worn out like a bearing or transmission, is there anything i can do or check before i open nearly empty wallet?  Thank you in advance for any suggestions Spencer |
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10-01-2012, 10:26 AM
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Designer King
Join Date: Mar 2004
Location: Toronto, ON Canada
Posts: 5,499
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Check your wheel bearings and if your car has a sound blanket on the firewall. Also check how old your tires are and make sure you have no exhaust leaks.
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Paul Yellow 77 Sunroof Coupe/cork interior; 3.2L SS '80 engine/10.3:1/No O2; Carrera Tensioners; 11 Blade Fan; Turbo tie rods; Bilstein B6; 28 tube Cooler; SSI, Dansk; MSD/Blaster; 16x7" Fuchs/205/50 Firestone Firehawk Indy 500s; PCA/UCR, MID9 Never leave well enough alone |
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10-01-2012, 10:41 AM
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Registered
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My R rated tires are loud as hell, does it make the noise when you let off the gas, or is it constant? What about coasting, car out of gear? Try to load the bearings by swerving left and/or right to see if it gets louder.
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72 911 Although it is done at the moment, it will never be finished. |
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10-01-2012, 10:49 AM
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Spiderman
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+1 on worn tires, rears in particular. Mine roared noticibly and improved with new. Still overall a loud car but the tire noise is gone. Also my cat bypass increased the noise.
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Midnight Blue 08 Cayman S, Fun/Track Black 12 VW-GTI, work Mexico Blue 87 Carrera, sold, sad, not enough garage space. |
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10-01-2012, 11:02 AM
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Thank all of you for the responses, not only am i a porsche newbie, but ive never used a bullitin board' before either. Needless to say after i posted my question i could not figure out how to get back here to check replies. Ill try the suggestions and give you an update.
Thanks again, |
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10-20-2012, 05:12 PM
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Tobluforu
Money Pit
