That 12 bolt howl and dynamat
Thread Starter
TECH Enthusiast
iTrader: (8)
Joined: Jul 2011
Posts: 661
Likes: 0
From: clementon, nj
That 12 bolt howl and dynamat I bought a 12 bolt due to a lack of funds and getting agreat deal on it. Its a very solid rear but it has that 12 bolt howl i knew it would have. I know its just their nature and I can live with it, but just out of curiosity has anyone ever tried dynamatting their car to quiet it down a little or is it just unfightable? lol
TECH Resident
Joined: Oct 2008
Posts: 801
Likes: 1
From: Anaheim Ca.
I bought a 12 bolt due to a lack of funds and getting agreat deal on it. Its a very solid rear but it has that 12 bolt howl i knew it would have. I know its just their nature and I can live with it, but just out of curiosity has anyone ever tried dynamatting their car to quiet it down a little or is it just unfightable? lol
Dynamat won't be enough...it might calm it down some, but I don't think it'd be enough to totally get rid of it. Dynamat is a vibration damper, not a sound proofing material.
Dynamat does little to stop that noise. I had a noisy 10 bolt for awhile and tried dynamat. Hardly made a difference. I think the noise transmits into the body at too many points to try and contain it.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
dyno mat did help a little bit but not very much. My gears are killing me with noise. I have been through 4 sets in my 12 bolt all set up to be quiet but as soon as I start abusing the car it starts the dreaded howl back. I drove it for 5 months last time with out running it hard and no noise. First night racing, drove home with a noise. It has gotten worse and worse .
check out the stereo section on sound absorbers.
i just did my car but haven't driven it yet, there's stuff from raamaudio that's 1/8" thick foam called ensolite ps (peel&stick) that is supposed to be a good sound absorber. if you pull your carpet and put 2-3 layers of that under that "might" help and would be about the cheapest way to go for sound absorber (not vibration damping).
i just did my car but haven't driven it yet, there's stuff from raamaudio that's 1/8" thick foam called ensolite ps (peel&stick) that is supposed to be a good sound absorber. if you pull your carpet and put 2-3 layers of that under that "might" help and would be about the cheapest way to go for sound absorber (not vibration damping).
Is the noise that loud for some of you guys? I've got a strange 12 bolt with 10k on it and I can hear it when I'm on power ever so lightly but not enough to bother me. (I'm OCD about noises too, the interior rattles drive me batshit crazy lol).
Have you driven the car hard? Guys with M6 usually end up having noise after they run the car hard, banging shifts and dumping the clutch.
Thread Starter
TECH Enthusiast
iTrader: (8)
Joined: Jul 2011
Posts: 661
Likes: 0
From: clementon, nj
never heard of it, details?
how much does it weigh? I want to try and keep the weight down as well.
check out the stereo section on sound absorbers.
i just did my car but haven't driven it yet, there's stuff from raamaudio that's 1/8" thick foam called ensolite ps (peel&stick) that is supposed to be a good sound absorber. if you pull your carpet and put 2-3 layers of that under that "might" help and would be about the cheapest way to go for sound absorber (not vibration damping).
i just did my car but haven't driven it yet, there's stuff from raamaudio that's 1/8" thick foam called ensolite ps (peel&stick) that is supposed to be a good sound absorber. if you pull your carpet and put 2-3 layers of that under that "might" help and would be about the cheapest way to go for sound absorber (not vibration damping).
TECH Resident
Joined: Oct 2008
Posts: 801
Likes: 1
From: Anaheim Ca.
I guess we'll find out if it was worth the gamble...
Thread Starter
TECH Enthusiast
iTrader: (8)
Joined: Jul 2011
Posts: 661
Likes: 0
From: clementon, nj
It seems hit or miss with the 12 bolt--some have issues and some don't. The only time I hear of guys having issues is when they hit the track with some drag radials or slicks and do a few clutch dumps out of the hole. I have a 12 bolt waiting to go in, but it's not because it was my first choice...it's because it was cheap
I guess we'll find out if it was worth the gamble...
I guess we'll find out if it was worth the gamble...
I've seen references to different grades of gears making the difference-something along the lines of cheaper gears (same mfg) being noisier than the higher grade, but just as strong. Could be BS, but it's a thought.
their vibration damping BXT mat however is I think one pound per square foot.
