Club Cobra Gas - N Exhaust  

Go Back   Club Cobra > Manufacturers, Engine Builders, tools, and parts. > ERA---Speak with Bob Putnam

Welcome to Club Cobra!  The World's largest non biased Shelby Cobra related site!

  •  » Representation from nearly all Cobra/Daytona/GT40 manufacturers
  •  » Help from all over the world for your questions
  •  » Build logs for you and all members
  •  » Blogs
  •  » Image Gallery
  •  » Many thousands of members and nearly 1 million posts! 

YES! I want to register an account for free right now!  p.s.: For registered members this ad will NOT show

Nevada Classics
Keith Craft Racing
Main Menu
Module Jump:
Nevada Classics
Nevada Classics
Advertise at CC
Banner Ad Rates
MMG Superformance
MMG Superformance
February 2021
S M T W T F S
  1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16 17 18 19 20
21 22 23 24 25 26 27
28            

Kirkham Motorsports

Like Tree6Likes

Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 10-27-2020, 06:12 PM
CC Member
Visit my Photo Gallery

 
Join Date: Nov 2012
Location: Rome, ME
Cobra Make, Engine: ERA 744/428/TKO 600
Posts: 276
Not Ranked     
Default Stainless Specialty Side Pipe length

Im having a new set of SS side pipes made to replace my Stainless Specialties pipes. One thing a friend noticed on ERA 727 and had corrected while they were still in business, was that the passenger side pipe was longer than the drivers side. Meaning the exhaust tip is closer to the rear wheel on the passenger side than the drivers side. I forgot to measure before taking them off and sending them to Georgie at GasN Pipes. If you have Stainless Specialties pipes on your ERA, can you measure each side to see what the actual difference is? I believe its just the pipe that attaches to the rear of the baffle that differs in length between the two sides. Patrick, any chance you have the same pipes? Thanks.
Reply With Quote
Sponsored Links
Sponsored Links
  #2 (permalink)  
Old 10-27-2020, 06:53 PM
patrickt's Avatar
Half-Ass Member
Visit my Photo Gallery

 
Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 20,584
Not Ranked     
Default

Quote:
Originally Posted by sea2jet View Post
Patrick, any chance you have the same pipes? Thanks.
I just went down and measured them. The distance from the end of the baffle portion of the pipe to the front of the opening of the side pipe is NINE inches on the driver side and EIGHT inches on the passenger side. Now, I do have the "quiet type" pipes from SS, pics of which are available in the gallery and ERA link in my sig below. That's funny that I never noticed the one inch difference in length.
Reply With Quote
  #3 (permalink)  
Old 10-27-2020, 07:06 PM
patrickt's Avatar
Half-Ass Member
Visit my Photo Gallery

 
Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 20,584
Not Ranked     
Default

Here's a pic:

Reply With Quote
  #4 (permalink)  
Old 10-27-2020, 07:19 PM
CC Member
Visit my Photo Gallery

 
Join Date: Nov 2012
Location: Rome, ME
Cobra Make, Engine: ERA 744/428/TKO 600
Posts: 276
Not Ranked     
Default

Oh no Patrick, sorry to point out the flaw��. I never noticed also until my friend so graciously enlighten me when he noticed on ERA 727. Sure enough, 744 has the same issue. I just want to make sure that Gas N Pipes has the correct information as they are using my pipes to create a fixture to make pipes for future ERA cars. I wish I would have measured mine while they where on the car. Thanks for taking the time to check Patrick...I just checked pictures I have and my pax side is longer than my drivers side.

Last edited by sea2jet; 10-27-2020 at 07:52 PM..
Reply With Quote
  #5 (permalink)  
Old 10-27-2020, 07:22 PM
CC Member
Visit my Photo Gallery

 
Join Date: Dec 2003
Location: QUINLAN, TX
Cobra Make, Engine: BDR 89 KEITH CRAFT ALL ALUMINUM 427 WINDSOR
Posts: 272
Not Ranked     
Default

If you make the sidepipes the same length and the headers the same length, one side is going to be further back on the car due to the cylinder offset side to side. Usually about the width of a connecting rod, about an inch or so.
CHANMADD and MKS427 like this.
Reply With Quote
  #6 (permalink)  
Old 10-27-2020, 07:22 PM
patrickt's Avatar
Half-Ass Member
Visit my Photo Gallery

 
Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 20,584
Not Ranked     
Default

The baffles are roughly the same length on both sides at 20.5" but the baffle is 4.5" behind the four pipes on the driver's side and about 6" behind the four pipes on the passenger side.
Reply With Quote
  #7 (permalink)  
Old 10-27-2020, 07:28 PM
patrickt's Avatar
Half-Ass Member
Visit my Photo Gallery

 
Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 20,584
Not Ranked     
Default

Quote:
Originally Posted by sea2jet View Post
Thanks for taking the time to check Patrick...I might have been confused on which side is longer that the other.
After 15+ years I was starting to think I'd seen it all, so it's refreshing to have something as obvious as that pointed out that I had never noticed. Kind of like when I point out the intentionally off kilter turn signal on the front of the cars.
Reply With Quote
  #8 (permalink)  
Old 10-27-2020, 07:34 PM
CC Member
Visit my Photo Gallery

 
Join Date: Nov 2012
Location: Rome, ME
Cobra Make, Engine: ERA 744/428/TKO 600
Posts: 276
Not Ranked     
Default

The turn signal is off kilter on my car as well, whats this world coming too

Last edited by sea2jet; 10-27-2020 at 07:39 PM..
Reply With Quote
  #9 (permalink)  
Old 10-27-2020, 08:30 PM
kevins2's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Dec 2011
Location: West Chester, PA
Cobra Make, Engine: ERA #795 427 S/C completed Jan. '14 - '68 FE 427 side oiler
Posts: 973
Not Ranked     
Default

Interesting, I also have the "quiet pipes" from Stainless specialties, but the dimensions are completely different. On my driver's side, the end of the baffle (I used the middle of the weld as the measure point) to the front of the exhaust opening is 1 5/8". The passenger side is 2 3/8". I also never noticed the difference.

Patrick, you said you have the quiet pipes. I recall Peter telling me the standard baffle length from Stainless Specialties is 20" and the quiet pipes baffles are 28". Mine are 28 1/2" so yours are considerably shorter and don't match what was described to me as the quiet pipes. That said, my car is anything but quiet. In fact, it is the loudest car in the area. So much so, one of the guys nicknamed my car "Thunderstorm", because that's what he said it sounds like when I'm approaching. Very confusing. Here's a photo so you can see the very long baffle and different dimensions compared to Patrick's car.

__________________
"Anyone who drives faster than you is a maniac and anyone who drives slower than you is an idiot" - George Carlin
Reply With Quote
  #10 (permalink)  
Old 10-28-2020, 06:10 AM
patrickt's Avatar
Half-Ass Member
Visit my Photo Gallery

 
Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 20,584
Not Ranked     
Default

Quote:
Originally Posted by kevins2 View Post
Very confusing. Here's a photo so you can see the very long baffle and different dimensions compared to Patrick's car.
Well this is one of those rare subjects of which I know very little. I will say the tone of the exhaust is absolutely delightful. Not too loud, not too soft, just the right amount of bass -- perfect.
Reply With Quote
  #11 (permalink)  
Old 10-28-2020, 06:50 AM
kevins2's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Dec 2011
Location: West Chester, PA
Cobra Make, Engine: ERA #795 427 S/C completed Jan. '14 - '68 FE 427 side oiler
Posts: 973
Not Ranked     
Default

The tone of my car is awesome, deep base. If I could turn the volume down a little, I would but wouldn’t want to change the tone. I just don’t understand why my longer baffles, made by the same company, are not quieter.
__________________
"Anyone who drives faster than you is a maniac and anyone who drives slower than you is an idiot" - George Carlin
Reply With Quote
  #12 (permalink)  
Old 10-28-2020, 06:51 AM
RockBit's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Jun 2014
Location: Dallas, TX
Cobra Make, Engine: ERA #812 427/482 FE
Posts: 440
Not Ranked     
Default

I also have Stainless Specialty side pipes and had never noticed the difference. I just measured and the passenger side is longer than the drivers side. I have the 20 inch baffle section and my pipes are very loud. Peter did not tell me there were quieter options.

The bends in the front on mine are not concentric, and I had to trim the opening when I installed the pipes to have clearance with the body on the passenger side. I asked Peter about getting the pipes remade but he declined, saying that he could not get in touch with Stainless Specialties. They weren’t cheap and should have been right.

I am glad to see Gas-N may be making ERA pipes. I might replace mine.
__________________
Chris
Reply With Quote
  #13 (permalink)  
Old 10-28-2020, 07:01 AM
CC Member
Visit my Photo Gallery

 
Join Date: Jul 2009
Cobra Make, Engine:
Posts: 349
Not Ranked     
Default

One of these days ERA might be gone and my concern would be getting primary pipes. They look difficult to make... getting the bends at the right angles comes to mind.
Reply With Quote
  #14 (permalink)  
Old 10-28-2020, 07:13 AM
patrickt's Avatar
Half-Ass Member
Visit my Photo Gallery

 
Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 20,584
Not Ranked     
Default

Hmmm, maybe ceramic coating them black reduces the sound level.
Reply With Quote
  #15 (permalink)  
Old 10-28-2020, 09:51 AM
patrickt's Avatar
Half-Ass Member
Visit my Photo Gallery

 
Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 20,584
Not Ranked     
Default

Here, I fished this out for reference.

Reply With Quote
  #16 (permalink)  
Old 10-28-2020, 12:41 PM
joyridin''s Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Feb 2009
Posts: 1,574
Not Ranked     
Default

Quote:
Originally Posted by Argess View Post
One of these days ERA might be gone and my concern would be getting primary pipes. They look difficult to make... getting the bends at the right angles comes to mind.
That won't be an issue. I had some headers made by GP Headers. I butchered up my old header and welded a flange on it and tried to describe what I wanted. I have no idea how they did it, but they were absolutely perfect and were within less than 1/16" of being where I had measured.
Reply With Quote
  #17 (permalink)  
Old 10-28-2020, 07:22 PM
CC Member
Visit my Photo Gallery

 
Join Date: Nov 2012
Location: Rome, ME
Cobra Make, Engine: ERA 744/428/TKO 600
Posts: 276
Not Ranked     
Default

Quote:
Originally Posted by RockBit View Post
I also have Stainless Specialty side pipes and had never noticed the difference. I just measured and the passenger side is longer than the drivers side. I have the 20 inch baffle section and my pipes are very loud. Peter did not tell me there were quieter options.

The bends in the front on mine are not concentric, and I had to trim the opening when I installed the pipes to have clearance with the body on the passenger side. I asked Peter about getting the pipes remade but he declined, saying that he could not get in touch with Stainless Specialties. They weren’t cheap and should have been right.

I am glad to see Gas-N may be making ERA pipes. I might replace mine.

Rockbit,
You mentioned that your passenger pipe was longer than the drivers side. What was the difference in length between the two? Thanks.
Reply With Quote
  #18 (permalink)  
Old 11-01-2020, 12:30 PM
RockBit's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Jun 2014
Location: Dallas, TX
Cobra Make, Engine: ERA #812 427/482 FE
Posts: 440
Not Ranked     
Default

sea2jet,

Sorry for the slow reply. I had to make a quick trip.

Lengths on my SS pipes (inches) are:

Passenger Driver
Nearest distance to tire: 5 1/2 7 1/4
Length after baffle: 13 12 1/2
Collector Length: 7 7

Photo is of passenger side. You can see the nonconcentric bend.
Attached Images
 
__________________
Chris
Reply With Quote
  #19 (permalink)  
Old 11-01-2020, 12:57 PM
patrickt's Avatar
Half-Ass Member
Visit my Photo Gallery

 
Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 20,584
Not Ranked     
Default

That's interesting, the pipes do look different. It reminds me of pipes that we would do long ago on cars that we would cut the tubs out of the engine bay (on cars where they weren't integral) and you could see the pipes from outside the car by looking behind the front wheels. I used to think that was about the coolest look I had ever seen. When you saw it, you knew somebody had done some serious tweaking to the car.
Reply With Quote
  #20 (permalink)  
Old 11-01-2020, 03:44 PM
CC Member
Visit my Photo Gallery

 
Join Date: Nov 2012
Location: Rome, ME
Cobra Make, Engine: ERA 744/428/TKO 600
Posts: 276
Not Ranked     
Default

Quote:
Originally Posted by RockBit View Post
sea2jet,

Sorry for the slow reply. I had to make a quick trip.

Lengths on my SS pipes (inches) are:

Passenger Driver
Nearest distance to tire: 5 1/2 7 1/4
Length after baffle: 13 12 1/2
Collector Length: 7 7

Photo is of passenger side. You can see the nonconcentric bend.
Thanks RockBit,
Your pipes look just like mine. So from a visual aspect, the passenger side looks like its 1 3/4 longer. Length after baffle is only 1/2 so I wonder if the the other 1 1/4 difference is due to cylinder offset? That being the case and depending on whether you want longer or shorter side pipes(look) adding or removing 7/8 from both the after baffle pipe and the collector should give a symmetrical appearance.
Reply With Quote
Reply

Thread Tools
Display Modes

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



All times are GMT -7. The time now is 12:37 AM.


Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
The representations expressed are the representations and opinions of the clubcobra.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners, moderators, Shelby American, any other replica manufacturer, Ford Motor Company. This website has been planned and developed by clubcobra.com and its forum members and should not be construed as being endorsed by Ford Motor Company, or Shelby American or any other manufacturer unless expressly noted by that entity. "Cobra" and the Cobra logo are registered trademarks for Ford Motor Co., Inc. clubcobra.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). Thank you for visiting clubcobra.com. For full policy documentation refer to the following link: CC Policy
Links monetized by VigLink