Originally Posted by Jim M.
(Post 16546559)
Mike, any update on the turbo equal length headers?
-Mike |
Here's Max finishing up a set of Cat Bypass Pipes. Thank you for your business in these difficult times, we wish everyone the best!
https://soulpp.com/wp-content/upload...pass-Pipes.jpg -Mike |
Originally Posted by Zipforia
(Post 16464258)
Do you have a sound clip of a TT/TTS with just the exhaust and stock cat, ?.
Originally Posted by Soul Performance
(Post 16473389)
Unfortunately we do not have video of the x-section only. I'd like to take care of anyone who could get us good quality video of it.
-Mike
Originally Posted by Diamond Dog
(Post 16473841)
So you need a video of a 991.2 TT with only the X pipe, OEM Cat Back ?
I've never put together an edited video before, so it was quite a project for me and a lot of fun. Also, here is a link to my detailed review of the Soul 991 Turbo X-Pipe - Brian |
Brian, thank you so much for the thorough review!
-Mike |
Wrong thread--
|
Anyone have the X-pipe with OEM cats in the San Diego area?
I would like to do an audition - for the Neunelfer band, of course |
Originally Posted by r00t61
(Post 16741644)
Anyone have the X-pipe with OEM cats in the San Diego area?
I would like to do an audition - for the Neunelfer band, of course |
Originally Posted by Diamond Dog
(Post 16741992)
I do, but I am in Ornage County off the 5 (Tustin)
|
Originally Posted by r00t61
(Post 16741644)
Anyone have the X-pipe with OEM cats in the San Diego area?
I would like to do an audition - for the Neunelfer band, of course
Originally Posted by Diamond Dog
(Post 16741992)
I do, but I am in Ornage County off the 5 (Tustin)
Best regards, John Gaydos |
Tig welded, back purged X-pipe sections coming through the fabrication shop, ready to be paired with catted or catless sections.
https://soulpp.com/wp-content/uploads/2020/09/xspot.jpg Why do we back purge our welds?Below you see three welds that look very similar on the outside – but inside it’s a very different story! Proper TIG welding technique is not just about achieving a great stack of dimes on the outside of the piping, but more importantly about penetration and preservation – making sure the back of the weld is functionally sound. https://i4q6a2d6.stackpathcdn.com/wp...596.jpg?x95646 Back purging is the process of shielding the inside of the weld with an inert gas to prevent contamination during the welding process, resulting in a stronger weld. Wikipedia extrapolates on this statement: “Stainless steels, duplex steels, titanium-, nickel- and zirconium- alloys are sensitive to the presence of air, oxygen, hydrogen, water vapour and other vapours and gases that may combine with the hot metal as it is being joined. Such gases may combine with the metal to form undesirable compounds that may reduce corrosion resistance or may be instrumental in creating cracks or other structural defects in metals.” The rate of oxidation in metal progresses more rapidly as temperature increases – to a very high level during welding. Back purging prevents this from happening. An inert gas does not undergo chemical reactions and prevents rapid oxidation while the stainless is in a molten state. Argon, a noble gas, is the most commonly used shielding gas in TIG welding. It offers a very stable arc allowing a skilled fabricator great control over the resulting weld. As part of the welding process, the welding torch is designed to emit shielding gas to protect the front of the weld. Different cups offer different gas patterns as seen below in a still below from a demonstrative video, but ultimately the goal is to shield the weld from oxidation and the negative effects explained above. This is how you can have a weld that looks great on the outside with the interior of the welding looking much different. To protect the inside of the weld, back purging is necessary – but not always done. Here’s an example of SOUL using back purging during the fabrication process. Our fabricator has plugged the ends of this 991.2 Carrera Cat Bypass Pipe and Argon gas is being pumped from a gas cylinder at a controlled rate through the inside of the piping. It takes some time to displace the ambient air with the inert gas before the welding can begin. https://i4q6a2d6.stackpathcdn.com/wp...688.jpg?x95646 Now that you’re aware of what back purging is and why it’s done, let’s go over a few examples of different welding scenarios with and without it to give you a better idea of why it is used. Weld 1: Lack Of Penetration (No Back Purging)https://i4q6a2d6.stackpathcdn.com/wp...683.jpg?x95646 This butt weld shows a lack of full penetration, leaving the root gap exposed. During the welding process this gap can allow for a better, stronger weld. Left unfilled, it can attract moisture and corrode quicker than the rest of the exhaust system. Without full penetration in this butt joint, this is a weak weld with reduced strength – it’s a point of failure. Below is an example of weld that failed from lack of full penetration. https://i4q6a2d6.stackpathcdn.com/wp...eld.jpg?x95646 This weld can result from high amp / low duration settings with no back purging. The blackened surface consists of oxides of chrome, iron, and nickel – effectively the rust resistant properties of the stainless steel are being burnt out of it. Weld 2: Sugaring (No Back Purging)https://i4q6a2d6.stackpathcdn.com/wp...682.jpg?x95646 Sugaring / granulation / contamination is extreme oxidation of the back side of a stainless weld. This weld has penetration but is also heavily oxidized due to lack of a shielding gas. While this weld has full penetration it is not as strong as a back purged weld and is also a point of potential rust and / or failure under stress. To a mild effect sugaring also interrupts exhaust flow.
Weld 3: Back Purged Weldhttps://i4q6a2d6.stackpathcdn.com/wp...682.jpg?x95646 In the end strength, longevity, and minimal impact of flow are the end goals of a back purged weld. This weld was done with the same settings as the weld above but was back purged with Argon. The inert gas prevents burning and contamination for a visibly different weld. There is full penetration with no contamination on the backside. Not only is it beautiful and well done, but it is quite strong. -Mike |
Awesome quality. I’ve seen sugaring a lot on bad stainless headers. Well done !
|
Originally Posted by onfireTTS
(Post 16880520)
Awesome quality. I’ve seen sugaring a lot on bad stainless headers. Well done !
-Mike |
Now's the perfect time to upgrade your exhaust or upgrade your air filter with our Beyond Black Friday Super Sale!
-Mike |
With your 991 Sport X-pipe Exhaust, when re-using factory tips, do they sit in the same location as stock or do they stick out beyond the factory location?
I'd like to maintain the factory look and location. The review video above is helpful but I can't see a good view of the final tip location. |
Originally Posted by vrybad
(Post 17038688)
With your 991 Sport X-pipe Exhaust, when re-using factory tips, do they sit in the same location as stock or do they stick out beyond the factory location?
I'd like to maintain the factory look and location. The review video above is helpful but I can't see a good view of the final tip location. -Mike |
All times are GMT -3. The time now is 04:18 PM. |
© 2024 MH Sub I, LLC dba Internet Brands