Neighborly Exhaust - Ford Muscle Forums : Ford Muscle Cars Tech Forum
Reply
 
LinkBack Thread Tools
post #1 of 27 (permalink) Old 09-08-2007, 07:15 PM Thread Starter
Super Moderator
 
Join Date: Mar 2002
Posts: 1,401
Neighborly Exhaust

The following are the remnants of a FordMuscle feature article that I picked up from the cutting room floor and decided to reassemble into something fun for the Tech Exchange. Sometimes, I get started on an article and for one reason or another it just doesn't pan out. This is part of one of those articles that DID NOT pan out. However, there's still some interesting research here.

Here is a bar chart and video I made while in search of the precise decibel level at which your neighbors will become pissed off about your Ford project car's exhaust. Having owned many Ford muscle cars, I've had a ton of different exhaust systems. The one that was on my 1973 Torino at the time this video was shot, hovered right at that threshold of irritating most of my neighborhood. I thought it would be fun to quantify just what that threshold was using a decibel meter. This way, those of you who want to piss off your neighbors can use this number as a goal and those who want to be good citizens know what number not to exceed.

Here's what I found. You'll piss off most of your neighbordhood with an exhaust system above 86 decibels at idle. I know this because I have a good relationship with my neighbors and I took the time to ask three of them about the "noise" (because that's what it is if you're not into musclecars). All three agreed the "noise" was excessive at times but not too bad. The video and graph here are based on a 3-inch exhaust with Flowmaster Super 40's (loudest street muffler) and turndowns before the axle. The Torino is equipped with headers and a 460 for those who are not already familiar with the car.

Data and Video
Here's my bar chart and a video of the demonstration. Remember, some of the information gathered is purely subjective and results may vary depending on the mentality of your neighbordhood. Also, you may want to read up on how decibel readings work. Decibel readings are not linear, they work similar to the Richter scale in that a 6.0 magnitude earthquake is much stronger than twice a 3.0 magnitude earthquake.





Conclusion
Somewhere between my wedding day and the birth of my first child, having the baddest sounding musclecar in town became both inconvenient and unimportant to me. Truth be told, at 36 years old I'm noticing a gravitation towards serene things and everyday that passes heightens my consciousness for my neighbors well being. Therefore, I'm trying to get below 86 decibels.

So, what did I do? I added tailpipes to lessen the impact on my neighborhood. However, the Torino is still too loud for me. I'll be following-up with a new decibel reading and video once I swap out the loud Flowmaster Super 40's.

In the meantime, here's a shot of the Super 40's (I'll be changing soon) and my new tailpipes.





FYI. I had two 02 bungs added when I had the tailpipes made up.

Attached Thumbnails
Click image for larger version

Name:	super40s.jpg
Views:	8647
Size:	42.5 KB
ID:	764  

Last edited by Mikelonis; 06-04-2009 at 12:13 PM.
Mikelonis is offline  
Sponsored Links
Advertisement
 
post #2 of 27 (permalink) Old 09-08-2007, 07:46 PM
Registered User
 
Join Date: Aug 2006
Posts: 712
Re: Neighborly Exhaust

I've got a 357C w/SpinTech ProStreets, true X-pipe, 2.5 mandrel all the way out, with Hooker 1 3/4" headers...it's quite loud...but I've got a neighbor with a Harley and one with a Cummins...and countless others with the "yipping" dogs...and for that I don't mind "gassing" it a little every now and then.

But, nice write up!!

'73 Montego MX 357C Homebuilt EFI, 9.5:1 comp, mild cam, 30lb injectors, A9L computer, Moates.net chip, 70mm TB, 76mm C&L mass air.

Last edited by MontegoMan351; 09-08-2007 at 08:06 PM.
MontegoMan351 is offline  
post #3 of 27 (permalink) Old 09-08-2007, 08:16 PM
Registered User
 
Join Date: Dec 2002
Location: Lake View Terrace,CA Usa
Posts: 1,311
Re: Neighborly Exhaust

I agree nice write up!
However ive always been irritated (pissed off) at the gaul of some people (insert your neighbor) who has a dog or animal of some sort that wont shut up and constantly barks whenever you pass by just walking. If you say anything to them about it its just the standard "oh well Sorry" Or " well thats what there for, to guard" Thus justifying their irritating sometimes enraging behavior.
But you have a Hot Rod with a slightly loud exhaust??? OHHH MY GOD Lets call the cops!!! Your disturbing the peace. No I'm not talking about running around with open headers or race "mufflers", but the standard Flowmasters etc. SIGH
Aggravating how things are sometimes. I guess ill just keep fighting the conformity.


Life long project. No it wont ever end....
71hotrodpinto is offline  
 
post #4 of 27 (permalink) Old 09-09-2007, 07:23 AM
Registered User
 
Join Date: Feb 2005
Location: Saline, Michigan
Posts: 3,659
Re: Neighborly Exhaust

People around me, call the cops for dogs barking!

Wildo
1965 Galaxie Fastback-351C 2v/C4 with a 3.50 Trac-Loc
2007 Torch Red Shelby GT500
2004 Marauder/2004 Cobra

Out of a job yet? Keep buying foreign!!
wildosvt01 is offline  
post #5 of 27 (permalink) Old 09-09-2007, 10:19 AM
Subscriber
 
Join Date: Dec 2006
Location: Collierville, TN
Posts: 143
Re: Neighborly Exhaust

Quote:
Originally Posted by MontegoMan351 View Post
I've got a 357C w/SpinTech ProStreets, true X-pipe, 2.5 mandrel all the way out, with Hooker 1 3/4" headers...it's quite loud...but I've got a neighbor with a Harley and one with a Cummins...and countless others with the "yipping" dogs...and for that I don't mind "gassing" it a little every now and then.

But, nice write up!!
do you have any clips of how your car sounds. i plan on using some similar items (xpipe and mufflers) and would appreciate the chance to get an idea of what it might sound like...thanks.
job1bf is offline  
post #6 of 27 (permalink) Old 09-09-2007, 10:34 AM
Registered User
 
Join Date: Aug 2006
Posts: 712
Re: Neighborly Exhaust

Quote:
Originally Posted by job1bf View Post
do you have any clips of how your car sounds. i plan on using some similar items (xpipe and mufflers) and would appreciate the chance to get an idea of what it might sound like...thanks.
Unfortunately...no...I don't have a video camera. But you can go on youtube.com or streetfire.net and hear other's sound clips to get an idea. But I will tell you WOT is the best :drool:

'73 Montego MX 357C Homebuilt EFI, 9.5:1 comp, mild cam, 30lb injectors, A9L computer, Moates.net chip, 70mm TB, 76mm C&L mass air.
MontegoMan351 is offline  
post #7 of 27 (permalink) Old 09-09-2007, 10:58 AM
Registered User
 
Join Date: Dec 2002
Location: Lake View Terrace,CA Usa
Posts: 1,311
Re: Neighborly Exhaust

Quote:
Originally Posted by wildosvt01 View Post
People around me, call the cops for dogs barking!
Yes ive heard of that, but if im not mistaken, they cant do anything about it. ??
I dont begrude a dog owner that tries to do something about it but the ones that dont and just tell you to ****off , thats what gets me.


Life long project. No it wont ever end....
71hotrodpinto is offline  
post #8 of 27 (permalink) Old 09-09-2007, 12:02 PM
Registered User
 
Join Date: Aug 2006
Posts: 712
Re: Neighborly Exhaust

Quote:
Originally Posted by 71hotrodpinto View Post
Yes ive heard of that, but if im not mistaken, they cant do anything about it. ??
I dont begrude a dog owner that tries to do something about it but the ones that dont and just tell you to ****off , thats what gets me.
Yeah, I totally agree. The people who try to keep their dogs quiet...I have no problem with; however, the ones that ignore their dogs are the ones that tick me off!!

'73 Montego MX 357C Homebuilt EFI, 9.5:1 comp, mild cam, 30lb injectors, A9L computer, Moates.net chip, 70mm TB, 76mm C&L mass air.
MontegoMan351 is offline  
post #9 of 27 (permalink) Old 09-09-2007, 12:40 PM
Registered User
 
Join Date: Sep 2002
Location: Glendale, AZ
Posts: 1,287
Re: Neighborly Exhaust

Quote:
Originally Posted by 71hotrodpinto View Post
Yes ive heard of that, but if im not mistaken, they cant do anything about it. ??
I dont begrude a dog owner that tries to do something about it but the ones that dont and just tell you to ****off , thats what gets me.
Here in Glendale AZ, I've got a friend who had to go to court and pay a fine for an incessantly barking dog. She lived alone with two kids and kept the dog as a guard animal. Didn't matter, all it takes is a real ass of a neighbor, or a real ass of a dog owner lol.

I think most municipalities have rules against it...it's just how strictly they're enforced. Disturbing the peace is disturbing the peace.

Cris

~These are just some of the drawbacks we...as guys who like to go mach 10 with our hair on fire and these little motors screaming at rpms that make other guys cry...have to deal with.~
Is1BadFord is offline  
post #10 of 27 (permalink) Old 09-10-2007, 06:15 PM
Tech Contributor
 
Join Date: Jan 2002
Location: Ontario,Canada
Posts: 6,659
Garage
Re: Neighborly Exhaust

Neat article..How would the average guy check how many decibels his exhaust is?...I can't fully enjoy my car cause I'm always worried about my nieghbours complaining.


1968 mustang 408W Hybrid..Burns gas and rubber!
11.47@123.35 with a crappy 1.72 60ft.
frdnut is offline  
post #11 of 27 (permalink) Old 09-11-2007, 08:16 AM
Tech Contributor
 
Join Date: Feb 2007
Location: Raleigh, NC
Posts: 376
Re: Neighborly Exhaust

I made my exhaust a simple turndown exiting out the side before the wheels. Since I used Magnaflow mufflers, at idle, it's not louder than a stock F150 with a simple exhaust upgrade. Even driving out of my neighborhood it's not loud at all. But once I put the pedal down on the street! Man, it's like the mufflers disppear.
-J
jrosengarth is offline  
post #12 of 27 (permalink) Old 09-11-2007, 03:24 PM
Registered User
 
Join Date: Jan 2005
Location: O'Fallon, MO
Posts: 194
Re: Neighborly Exhaust

Cool post for sure...My exhause is hooker super comps, 3" x-pipe, 3" bullet mufflers (long), and 2.25" tails exiting out he side before rear wheels. It doesn't really have much of a low end thump to it. It's loud no dout, but doesn't have that low powerful sound and I think that is what most people dislike; there windows shaking when you drive by. Maybe next summer I'll redo my system with a muffler that will cancel out the highs, and with 3" turn downs to let it rumble...my nieghbors think my cars loud now...

'68 Galaxie 500 XL
390 w/some goodies; C6 stock...for now
M3FordBoy is offline  
post #13 of 27 (permalink) Old 09-15-2007, 08:13 AM
Registered User
 
Join Date: Mar 2004
Location: Puyallup, WA
Posts: 1,788
Re: Neighborly Exhaust

I got a video clip of my exhaust on my website. Look under Project Car and click on Cougar Video on top of page.

347 Stroker, 10.6:1, Vic Jr, World Jr. heads (2.02/1.60 valves), Custom 780cfm ProSystems 4150 Double Pumper, XE284H cam, MSD E-Curve, 4.30 gears/31 Spline axles, Tremec TKO 5 Speed w/.83 5th gear ratio.
Spali32 is offline  
post #14 of 27 (permalink) Old 09-15-2007, 10:12 PM
Subscriber
 
Join Date: Jun 2004
Posts: 883
Re: Neighborly Exhaust

I don't drive my "loud" cars that often, mostly on the weekends but there were a few weeks where my mach 1 was the only car I had to drive. I started it up at 5am and drove it to work. Not any worse than the boom boom from some jackasses trunk blasting some crap hip hop, the Harley guys starting their bikes with open exhaust etc. I have a police officer who lives a few doors down with a loud Harley. Nobody really complains! If they did then I doubt anyone would respond with the officer nearby.

1969 Mustang Mach 1
1970 Dodge Charger R/T
2013 Ford F150 FX4 Ecoboost
19mach69 is offline  
post #15 of 27 (permalink) Old 09-16-2007, 12:14 PM
Senior Member
 
Join Date: Aug 2001
Posts: 1,413
Re: Neighborly Exhaust

to get my 302 quiet my friend had a good idea..not sure if there is room though. the caddy 472 block used one muffler for all 8, so the plan would be to get 2 of these for mass quiet flow. i am considering doing this... i really want spin tech race one$. but my neighbors already complain w/ hookers and flowmasters.
http://www.rockauto.com/catalog/x,ca...,parttype,5872

more research will be done prior to making a decision. track and weekend cruiser soon only.. i just love how quiet the new vette is...yet it flows like heck!

maybe a vette muffler w/ automatic electric cutouts....now were talkin!
107485 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Muscle Forums : Ford Muscle Cars Tech Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Mustang exhaust / Falcon exhaust ?\'s 66falcon Falcon Pages 1 10-24-2005 10:23 AM
Mustang exhaust / Falcon exhaust ?\'s 66falcon All Ford Techboard 1 10-24-2005 09:37 AM
Can anyone use this exhaust??? Cman The Garage 4 08-02-2005 03:00 PM
67 289 exhaust 67moss All Ford Techboard 2 04-09-2004 09:16 AM
exhaust giddyup1 All Ford Techboard 3 08-08-2002 04:16 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome