Sidepipes & vortex cones
Thread Starter
Intermediate
Joined: Apr 2007
Posts: 47
Likes: 0
From: Melbourne Vic.
Sidepipes & vortex cones
I have been keenly interested in the current posts on sidepipe inserts. I am running a 73 BB (LS-7) with Hooker headers and 4" side pipes and am looking to improve both performance and sound. Current debate on the forum seems to revolve around STS spiral inserts and Hooker max flows.
But there seems a third option that I haven't seen mentioned and that is the Dynatech Vortex insert cone, I found these at JEGS.
Has any body used these cone inserts, or, otherwise have an opinion on them?
Tony
But there seems a third option that I haven't seen mentioned and that is the Dynatech Vortex insert cone, I found these at JEGS.
Has any body used these cone inserts, or, otherwise have an opinion on them?
Tony
Le Mans Master
Joined: Apr 2000
Posts: 5,202
Likes: 10
From: cincinnati ohio
St. Jude Donor '09
The Dynatech Vortex cone is one of the few sound control devices I haven't tried, so I can't comment.
Seems to me I remember someone on the forum that used them with good results in conjunction with another baffle type.
I have tried these Car Chemistry inserts that did next to nothing in reducing the decibels....
Seems to me I remember someone on the forum that used them with good results in conjunction with another baffle type.
I have tried these Car Chemistry inserts that did next to nothing in reducing the decibels....
Last edited by yellow 72; Dec 3, 2007 at 09:14 PM.
Thread Starter
Intermediate
Joined: Apr 2007
Posts: 47
Likes: 0
From: Melbourne Vic.
Cone inserts
Thanks yellow 72, perhaps a search through the archives is in order. My Hookers came with two different sets of insert tubes, the larger tubes run offset through tubes while the smaller tubes run spiral reverse perforations both make the LS-7 sound poor. Way to much back pressure.
Instructor
Joined: Apr 2006
Posts: 212
Likes: 0
From: Woodland Park Colorado
When I did the hooker sidepipes and sts baffles I thought they were still a bit to loud and considered the cones to get just a little more quiet but without power loss. I did a search and found little but what I did find was noise level didnt change much and some saw power loss. Now that Im used to the noise that my sidepipes have and I been by many police cars without getting into trouble for noise I will leave it alone but I dont think you will get much sound controll with only the cones.
Hope this helps
Hope this helps
Drifting
Joined: Oct 2003
Posts: 1,486
Likes: 10
From: Big Pine Key FL
I have vortex cones in my collectors... 1-2 dB Maybe (dB is a log Scale)
I think they make nice Spark arresters but that's about it....
I used 4" id Glass packs and made my own sidepipes...
see my corvette photos...
I think they make nice Spark arresters but that's about it....
I used 4" id Glass packs and made my own sidepipes...
see my corvette photos...
Burning Brakes
Joined: Mar 2006
Posts: 1,095
Likes: 5
From: Oldham County Louisville, KY
I run those cones from Jegs in mine. It takes the edge off of it basically. It gets rid of the loud cracking when let off the gas and decelerate. I can hear someone yelling at me over noise of the pipes now.
Team Owner
Joined: Nov 2004
Posts: 20,715
Likes: 25
From: Sorrento Italy
I'm sure you've got the only 'muffler' that works and flows properly on a high output engine running on sidepipes...
Tell me, what you've got there is simply a 4'' open side outlet with a vortex cone, is it? could you post some closer pics? does the vortex insert cone dropp some of the noice? sound is round and smoother or venomous and
like the open header?Could i see a closer pic of the front and rear end of your ride?
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Burning Brakes
Joined: Mar 2006
Posts: 1,095
Likes: 5
From: Oldham County Louisville, KY
I'm sure you've got the only 'muffler' that works and flows properly on a high output engine running on sidepipes...
Tell me, what you've got there is simply a 4'' open side outlet with a vortex cone, is it? could you post some closer pics? does the vortex insert cone dropp some of the noice? sound is round and smoother or venomous and like the open header?
Could i see a closer pic of the front and rear end of your ride?
Tell me, what you've got there is simply a 4'' open side outlet with a vortex cone, is it? could you post some closer pics? does the vortex insert cone dropp some of the noice? sound is round and smoother or venomous and
like the open header?Could i see a closer pic of the front and rear end of your ride?
Here is my web site with pics of the car. None with the new tires and wheels though. Pics are in the gallery.
http://www.71canam.com
Le Mans Master
Joined: Apr 2000
Posts: 5,202
Likes: 10
From: cincinnati ohio
St. Jude Donor '09
From Summits site....
Don't get caught by the sound police.
Rules--they're everywhere. When it comes to sound requirements, they can't be ignored. Don't take chances with sound control, or you may end up on the trailer. Vortex cone inserts from Dynatech easily install near the exit of the header collector or muffler outlet to reflect and dissipate sound energy, reducing the decibel level. Because the open area of the cones is greater than the area of the collector or exhaust pipe, there's no significant backpressure, so you reduce noise with little or no power loss. The cones are made from T-304 stainless steel and weigh less than 1/2 lb. each.
Don't get caught by the sound police.
Rules--they're everywhere. When it comes to sound requirements, they can't be ignored. Don't take chances with sound control, or you may end up on the trailer. Vortex cone inserts from Dynatech easily install near the exit of the header collector or muffler outlet to reflect and dissipate sound energy, reducing the decibel level. Because the open area of the cones is greater than the area of the collector or exhaust pipe, there's no significant backpressure, so you reduce noise with little or no power loss. The cones are made from T-304 stainless steel and weigh less than 1/2 lb. each.
