C5 Z06 180 degree header build thread
Thread Starter
Instructor
Joined: Oct 2016
Posts: 124
Likes: 64
From: Johnstown Ohio
Sorry for the delay in making more videos. This project has consumed most of my free time and I'm catching up on getting some other things done now that the lift is available.
I will have more music to play and soon. I'm anxious to hear it from outside the car as well.
I will have more music to play and soon. I'm anxious to hear it from outside the car as well.
Thread Starter
Instructor
Joined: Oct 2016
Posts: 124
Likes: 64
From: Johnstown Ohio
To experiment with different mid pipe designs. Working with aluminized mild steel is easier, cheaper, and faster than stainless. The plan is to cut the stock H pipe between the H and the hanger tabs and build different styles of X pipes and also one without a cross over of any type using the stock H pipe, not including the H to make things go quicker. If I find I like a different X style or no X at all more than the current one, I will then duplicate it out of stainless for the final product.
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Safety Car
Joined: Mar 2016
Posts: 3,534
Likes: 432
From: Atlantic Beach FL.
I would love to see a before and after dyno chart.
It must be breathing better with all of the exhaust events in perfect alignment.
If there was significant gain then it would make me wonder if an intake could me made to breathe that way too (some sort of 180 deg intake).
It must be breathing better with all of the exhaust events in perfect alignment.
If there was significant gain then it would make me wonder if an intake could me made to breathe that way too (some sort of 180 deg intake).
Last edited by Rob 02; Apr 25, 2017 at 08:48 PM.
Thread Starter
Instructor
Joined: Oct 2016
Posts: 124
Likes: 64
From: Johnstown Ohio
I would love to see a before and after dyno chart.
It must be breathing better with all of the exhaust events in perfect alignment.
If there was significant gain then it would make me wonder if an intake could me made to breathe that way too (some sort of 180 deg intake).
It must be breathing better with all of the exhaust events in perfect alignment.
If there was significant gain then it would make me wonder if an intake could me made to breathe that way too (some sort of 180 deg intake).
As far as intake, there is no " 180 degree" method to be had. The all out best thing would be individual throttle bodies. Something I would love to do but it's not in the cards as of yet.
Thread Starter
Instructor
Joined: Oct 2016
Posts: 124
Likes: 64
From: Johnstown Ohio
Banned Scam/Spammer
Joined: May 2007
Posts: 15,685
Likes: 1,330
From: Machineguns, because I don’t compromise
Sending you a friend request. Someday if needed I'll be there on your page easy to find.
For now, I'm highly impressed like everyone else, and like you I have fab skills so I'm even more impressed with the details not captured in pics. There's a lot more to this story and reading between the lines it's a labor of love & hate.... and then back to love and admiration of the completed job now that its finally (mostly) settled.
Looking forward to your future posts on the forum.
For now, I'm highly impressed like everyone else, and like you I have fab skills so I'm even more impressed with the details not captured in pics. There's a lot more to this story and reading between the lines it's a labor of love & hate.... and then back to love and admiration of the completed job now that its finally (mostly) settled.
Looking forward to your future posts on the forum.
Safety Car
Joined: Mar 2016
Posts: 3,534
Likes: 432
From: Atlantic Beach FL.
Unfortunately, I do not have a before dyno graph but I'm guessing there is plenty of other stock Z06 graphs to compare to. I do plan on having it dynoed, the only other modifications besides the headers are a crappy "hot air intake" from the previous owner and a quality and conservative bench tune. It will be done on a dynojet so comparison numbers although slightly apples to oranges will be easy to find.
As far as intake, there is no " 180 degree" method to be had. The all out best thing would be individual throttle bodies. Something I would love to do but it's not in the cards as of yet.
As far as intake, there is no " 180 degree" method to be had. The all out best thing would be individual throttle bodies. Something I would love to do but it's not in the cards as of yet.
Most enthusiast know what modifications dyno at what HP and torque.
If you had it dynoed now then I would be willing to bet that there would be an increase of 15 to 20 Hp over conventional long tubes and 30-40 Hp over stock running the LS6 cam and heads. I would also think that the HP increase would be across the entire band (both low end and High end).
With the LS6 cams street manors and wide LSA (in terms of scavenging), I would doubt that there would be any compromise in fuel economy or reliability.
These are the kind of mods that I like.
Thanks for sharing your talent.
Thread Starter
Instructor
Joined: Oct 2016
Posts: 124
Likes: 64
From: Johnstown Ohio
Updates and more stainless fabrication coming soon.
Short story, Everyone that has heard the car says it sounds awesome but I'm not happy with the sound through the factory TI mufflers. I made a quick and ugly mid section without an X using a factory mid section. Without the X it sounds very different. Not sure which I prefer and won't know until I make a new over axle section with straight through packed mufflers. And of course I'm building, not buying the mufflers so it will take a little while.
Stay tuned, I'm not giving up until the sound is perfect.
Short story, Everyone that has heard the car says it sounds awesome but I'm not happy with the sound through the factory TI mufflers. I made a quick and ugly mid section without an X using a factory mid section. Without the X it sounds very different. Not sure which I prefer and won't know until I make a new over axle section with straight through packed mufflers. And of course I'm building, not buying the mufflers so it will take a little while.
Stay tuned, I'm not giving up until the sound is perfect.
Burning Brakes
Joined: Dec 2003
Posts: 1,243
Likes: 5
From: Loveland CO
Yes, I've checked into Burn's on several occasions on many projects. I'm sure they could have made the collectors and done an outstanding job but I'm getting very stubborn in my old age and felt it was time to make my own.
Dr. Gas is the man behind the 180 degree headers in Sterling Martin's Nascar entry from the mid nighties. I bought a pair of his Spintech mufflers for my SB2 powered RX7 years ago, they sounded awesome.
Dr. Gas is the man behind the 180 degree headers in Sterling Martin's Nascar entry from the mid nighties. I bought a pair of his Spintech mufflers for my SB2 powered RX7 years ago, they sounded awesome.
http://www.coneeng.com/collectors.html
Sounds good, would be interested in dyno results.
Last edited by RedZMonte; Jun 2, 2017 at 06:08 PM.