Evolution and Specific Designs of Exhaust Components

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NASCAR Boom Tube Exhaust Types Explained: Different Setups = Different Sounds! (REAL Parts)

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What happens here

The video delves into various boom tube designs and their historical context. Older 'wide skinny' boom tubes were prevalent from the mid-90s until 2007, when NASCAR introduced the 'Car of Tomorrow.' The current NASCAR models use simple pipes directly from the headers. The presenter then contrasts several X-pipe configurations, highlighting how the internal structure, pipe diameter, and merging angle all influence the sound. He inspects a newly manufactured 'Boyce Boom Tube' that he acquired, noting its multi-chamber design. The historical significance of certain pipes, like the Morgan-McClure X-pipe (Number 4), is emphasized. He also discusses the internal baffling in some older designs, including triangular 'naca duct' shapes and simple straight divisions, and how they contribute to 'bleeding off' pressure for different sound profiles.

Goal: Showcase and differentiate various exhaust component designs and their impact on sound.

Tools and materials

Assorted X-Pipes — Demonstrating variations in X-pipe and integrated X-pipe designs
Boom Tube Number 1 — Comparison to newer and different designs
Boom Tube Number 2 — Comparison with triangular internal ducts
Boyce Boom Tube — Showing an un-used version of a historical design
NASCAR X-Pipe — Highlighting a unique X-pipe design from Morgan-McClure

What they say

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like right so we did it and that's actually this exhaust is on this shirt the morgan mcclure exhaust yes i took a picture of it and sent it to the graphic design guy and he made it jacob did a good job yes he did now these ones are newer because they don't even use these the flat boom tube anymore to me the definition of boom tube would be these any of these with the wide flat exits but people still call these boom tubes and i don't really know most of these came from an auction i believe that one's probably from uh you know i'm not even sure i think this one's from a truck from the truck series because the the cylinder spacing is wider but they have x's integrated into them i really don't know what that would sound like i do know that those do not sound like that but they also don't sound like that not sure it looks cool though it almost looks more old school but they still have baths you can see this one just the whole way down there's baffles in there with this circles cut out to kind of smooth out the airflow some of them have baffles in them that are shaped like triangles like little nacka ducks almost i don't know what the difference in the airflow alteration is between the circles and the triangles but some of them don't even have any division in the walls at all these ones don't you can see in the unfinished one here those are completely solid there's no duct work in between those walls those are three chambers that are completely separated from each other these pieces in here they do have some little triangles in there so they have like you know it comes out of here it gets flattened out smoothed out whatever it is by this piece and then it's just standalone and it does make a difference what it is the pipe diameter the angle of the x all that changes the way the sound passes through the amount of material taken out to like the actual opening inside the tube changes how much pressure can bleed through from each side it's all a big science and there's a lot of places that a lot of r d to figure this out like this little one here this is three inch instead of three and a half like everything else don't really know why it just had this written on a three inch 60 degree which i would assume to be the angle because they probably tested you know 50 60 70 80 different pipe sizes dyno test everything because it's got these bands welded on there it's where you could clamp a bigger piece over it and run it but i don't know if this piece had ever been run i…

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