chamber design. I'm stuck, please help! - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> General Rodding Tech
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 11-11-2012, 06:13 PM
Registered User
 

Last journal entry: Starting the build, 333ci chev, 195 cc jegs heads
Last photo:
Join Date: Mar 2009
Location: anoka mn
Posts: 375
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
chamber design. I'm stuck, please help!

my lonesome have been working on a set of mufflers that don't sound like fecal matter. I am having a difficult time finding just the mufflers (race mufflers). I DO NOT want an entire exhaust system. I do have the capability of fabing up mufflers, I have custom made equal length headers to an x pipe thus far. I DO NOT want the mufflers to have those two little connections keeping them together. I will be making this a side exit.

The motor is a carbed 5.5 lt small journal sbc. Should be able to make power to 7800 or so rpm.

I am looking for the highest frequency/note/tone/pitch I can get. I very much enjoy the higher, crisper, cleaner sound the european v8 makes. I hate with a passion the rumble of the harley/dumptruck American v8. I have heard flowmasters on these cars. I don't know if it was the particular flowmaster series or what. But that m3 was a dumptruck. I am trying to avoid that.

Sounds like a chevy small block doing a dyno pull to me...


amazing high frequency sound


Here is a cutaway of a corsa muffler.

http://s805.beta.photobucket.com/use...g.html?filters[term]=recent&filters[primary]=images

I am rather sure that the chambers in the muffler can be designed as such to reflect frequencies to cancel out the unwanted frequencies. I just can't find the math anywhere to determine the dimensions of the chambers.

I am working with 17.9 inch long primary tubes that are 1 and 5/8 in diameter, they go into a 2.5 inch collector, that then goes into a 3 inch x pipe, that will then go directly to the side exit mufflers. I am keeping it as short as possible to help retain the sound I am after.

This is what I am avoiding.

Same motor different car different mufflers...

So does anyone know how to design the muffler to achieve this? Or designing a resonator to do this? Or simply the chambers inside the muffler to do this?

I am so stuck. Also I don't think a helmholts resonator of any kind will do the trick. that would only cancel out the freq. I think this is more like a musical instrument where the sound entering is not going to be the sound at the bell of the horn coming out.
Reply With Quote
  #2 (permalink)  
Old 11-12-2012, 10:02 PM
SSedan64's Avatar
Registered User
 
Last photo:
Join Date: Dec 2007
Location: Macon, GA.
Age: 49
Posts: 6,016
Wiki Edits: 0

Thanks: 0
Thanked 45 Times in 45 Posts
Try searching "SuperTrapp" muffler. Some configs. have a higher pitch sound.
Reply With Quote
  #3 (permalink)  
Old 11-13-2012, 02:50 AM
Registered User
 

Last journal entry: Starting the build, 333ci chev, 195 cc jegs heads
Last photo:
Join Date: Mar 2009
Location: anoka mn
Posts: 375
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by SSedan64 View Post
Try searching "SuperTrapp" muffler. Some configs. have a higher pitch sound.
I have heard those, they come nowhere near the pitch the ipe f1 exhaust does.
Reply With Quote

Recent General Rodding Tech posts with photos


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not 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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Comb Chamber Design v Total WOT Spark Advance 1965tripleblack Engine 22 02-19-2012 03:52 AM
Open chamber heads with closed chamber pistons S10 Racer Engine 6 04-28-2009 01:06 PM
Closed Chamber Pistons With Open Chamber Heads HEGLER Engine 1 03-30-2008 07:17 AM
SBC Heads - Open Chamber or Closed Chamber S10 Racer Engine 1 12-29-2007 04:51 PM
chev open chamber heads with closed chamber pistons memphisvette Engine 27 03-10-2007 03:44 PM


All times are GMT -6. The time now is 12:27 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2013, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.