How to fix the WORST Sounding V12 Exhaust

These 12-in-one heads took over years to make and that's why they sound absolutely bad, but now we're going to fix it. My first mistake. The wrong stuff may have heard before that cars like the Bani Suai use

exhaust

s made from Titanium Exhaust Inc. The system can be seen back here and it just so happens to be the same material that F1

exhaust

s are made of, so just changing the exhaust material you can turn this noise into a symphony. It doesn't seem right, so I bought a couple of pens to find it. round one stainless vs titani if ​​you really think that a material change alone would be enough to turn something nice like this into a symphony like that you really deserve a diploma from the University of Dumb Ideas you're stupid that's where I got M Winner too , to be honest the difference is much bigger than I expected, but keep in mind that the titanium head is not only much shorter but also has smaller secondary pipes, so for the next one we will enlarge the expensive titanium head. titanium and we will compare it with the cheapest one. one made of steel M round two team M Reser titanium disappointing considering that titanium is 10 to 50 times more expensive than dye in steel, certainly not my first choice when it comes to building experimental heads and getting the correct shape of the heads headers is much more important than the material as long as they are not made of rubber, so for JZ this car is Bru or could you guess the material of these LS is like something out of a movie?

They are made of M steel, so this is why it sounds like that because of that, one and one, not because of the material, everything lasts the same. I did those 12 hours, which is why it sounds weird, because you hear every shot instead of all the others. The Chevy Power FKS sounds just as good. as the plane sets or crosses, we have Here comes a new Challenger, come on baby, stop the fu off of me, straight ahead. My second mistake, it's not a flat plane, when you hear a call like this you instantly think it sounds like a Ferrari, why?

Ferrari is one of the few manufacturers that make flat crankshafts. Its crankshafts look virtually the same as any four-cylinder engine, but with two connecting RS rings on each stroke of the crankshaft. When you look at this crankshaft from the front, you see everything. the center points line up and could be connected by a single plane and with a back angle of 90°, the left and right banks take turns sending exhaust gases into the atmosphere evenly spaced eight times per cycle, but there is a very famous country for building areas in a different way, China, uh, I mean America and almost every V8 out there, the crankshaft FRS are not aligned here, the center points are in two different planes.

They cross each other, this is done to reduce engine vibrations, but it also interferes with the firing order. now it looks something like this, that's what makes the crossplane V8 sound like a dinosaur going through puberty. Ex, a side effect of this prehistoric war of a V8 crossplane is a loss of power. Why is the answer here? The escape impulses to survive unevenly in The Collector. So you can never get the timing right to get the most out of a set of equal length headers but this can be fixed and we do this by having unequal lengths at 6000 RPM we gain almost 30 horsepower but there is another way to solve it.

If you have enough room in the engine bay you can create something like this, it obviously sounds cool and it's called a 180° crossover because it takes two cylinders on one side and two cylinders on the other and puts them in a manifold, but it's cool, ya that the head looks at us and rings, there is a problem, it is actually undermining P, do you understand? Yes, these headers have to wrap around the entire engine, so they have to be quite long and if you put long headers on a high RPM engine, it will be difficult to get maximum power, but who cares, because the main question remains: could you hear the difference between a flat V8 and a crossover V8 if they both run eight in one, maybe if you believe in magic and nonsense and if you like nonsense?

I'll like this one, a flat V12. V12s are known for their incredible smoothness because 60° V12s can achieve perfect engine balance, but this perfect engine balance is only possible with a triple play crankshaft. What would that look like on a flat V12? Terrible, my third mistake excessive pipe length talking to an armchair expert about the science of exhaust tuning is a bit like talking to a fat doctor about diet advice they don't know what they're talking about I'm like the doctor but for engines and better because I say and I don't know even in the books I studied the science of exhaust tuning is often described as black art and in the end only testing can verify if your guesses were correct because there is a lot going on but check it out yourself with heads, there are only two metrics that really matter: girth and length or perhaps diameter would be more appropriate.

These pipe dimensions have a large influence on the shape of the power curve. A larger pipe diameter will shift the entire power band to a higher RPM range, along with a short length, these pipes will get the most power out of your engine, but will also kill the bottom end. Long header tubes have the opposite effect: they take some power away from the top end to raise the midrange. This is how exhaust gases work. we have grass and once we roll the exhaust gases it will continue to flow even after the exhaust has been closed and as the gas cloud goes down the header pipe it will leave a small vacuum and the next time the exhaust will open this vacuum .

It will have to suck in the exhaust gases from the next cycle and especially at high RPM when the exhaust gases must be expelled even faster. This will really help the engine run better, but better yet, it can use one's exhaust gases. cylinder to collect several cylinders at once and so each cylinder can generate more power with its equipment than it could generate on its own. That doesn't sound too complicated, okay? You also know what is happening. The reality is much more like this step one. Exhaust with passage two open, a huge pressure wave is released that transports the exhaust gas particles little by little towards the exit, but here you are capturing waves that are rare and these are no different.

Acoustic waves with 120 DB are strong enough to cause permanent hearing damage, but these Pressure waves are 10,000 times stronger, which is why an engine is supercharged, but how that works is a little more difficult to explain as soon as The exhaust wave opens the cloud of exhaust gases and the pressure wave will compete with each other until the end of the exhaust pipe, the pressure wave will pass in front of us at a speed of sound as if it wanted to scream outside of the road, the incoming exhaust gases meanwhile, the exhaust gases trail behind at a much slower rate.

Without looking back, the pressure wave advances until it reaches the end of the pipe and then something strange is going to happen, it will spread everywhere and return to the pipe, but this one coming back seems very negative and carries a different message, hurry up, I'm waiting and as this wave quickly passes through the cloud of exhaust gases, it is going to suck it towards the exit, but it will continue until it reaches the engine, this time a little late, it bounces off the exhaust R and comes back as negative as it came , it runs at the speed of sound towards the exit and then something strange is going to happen again and again until the pressure wave runs out of steam or returns to the engine and the exhaust wave stops if the negative pressure wave returns blaze up.

Hurry, it may help excess exhaust gases escape and make more room for fresh air, but the real magic happens when we get rid of this lawnmower engine and replace it with this racing engine and its aggressive crankshaft. cams will not only affect the exos. The cam opens the valve sooner, but it will also keep it open longer and even the intake valve will be slightly open before the exhaust wave closes completely, along with the perfect L-fed pipe, the first pressure wave negative, which is the strongest, can return. in time to reach the engine, before the exhaust wave closes, it will remove the excess exhaust gases from the cylinder and then continue to the right at the entrance where it issued its message, hurry up, I'm waiting, I'm coming and maybe already you guessed it.

There is also a Bresser wave that bounces up and down in the intake and when the timing is perfect, a pressure wave of positive intake pressure will force the air/fuel mixture into the cylinder just before the Bresser wave closes. intake and this is how an NA engine is supercharged. yes, science, the scavenging effect is so strong that the charge in the intake port is actually moving at over 90M hour towards the cylinder and the piston is parked at top dead center. Now you just need to choose the correct length H so that the negative pressure wave can return in time, so what is the perfect head length?

I don't know because that doesn't just depend on engine speed, camshaft, cylinder pressure, manifold tube temperature, what is even the adjustment tube temperature? I don't know, but I do know that the same principle applies to other pulsed air PPS, especially those that are not limited by camshaft profiles and sound amazing, but this principle also works on two strokes, although in one slightly different way in shape and The length of these sections is critical to the performance of a twin-engine engine. As soon as the pressure wave leaves the engine, the first cone will cause a long negative wave that will draw fresh air into the exhaust.

The second c will cause a strong reflection of the first. pressure wave and this will push the spilled air fuel mixture back into the cylinder like a supercharge, but from the exhaust side, bye bye, see the disadvantage of supercharging, it only works best at 1 RPM when the engine is tuned, but there will always be RPM ranges. When the engine goes out of tune and everything breaks down, the fuel mixture will be forced out of the intake and at best the engine will have poor response, low power and will idle very well, but at

worst

. In this case, the engine will melt, so what to do about it?

You could try to weaken the pressure waves. The reflection of the pressure wave will be stronger when the exhaust pipe ends in an open space. But when there is only a small change. In the size of the area, the reflected negative pressure wave will be much weaker and more of the wave energy will be carried forward and, as can be seen in this Formula One titanium head, they build the step of al side just to get that reflection, but there is much more. A common way to reduce the intensity of returning pressure waves. This is done by loading the primary tubes into the collector and collector designs can be divided into two types: the simpler collector which still creates quite strong wave reflections, while the combined collector does not. and now when we take a look at the wall exhaust system it might start to make sense to you as we want to break up those pressure waves, not only weaken the harmful positive pressure waves tremendously, but now we have a suction returning to the engine almost all the time and this usually has the effect of creating a wider power band and it almost starts to look a bit like this, but with so much traffic in the exhaust one might wonder if these waves will ever collide.

Together, waves don't work that way. Notice how the pressure waves propagate along the tube, then bounce off the wall and return to the origin at the speed of sound, but they can or do overlap each other and cancel each other out. It's called a standing wave and standing waves are music, yes, that's right, the reason why flutes and trumpets make those sounds is because they have a standing wave inside them, oh, and that's what's missing to achieve a good sound. No, I don't think so, the standing wave is completely dependent on the frequency, the speed of sound and the length of the tube it has to travel through.

This time the cycle repeats after the pulse travels the entire length of the instrument, but most of the standing waves were responsible for that incredible sound, even the 12 only reaches those frequencies. at maybe four points over the entire approximate range and then practically not all engines turned on with the same federal sound sound like music at some point, but they don't, as especially one manufacturer was able to prove this over and over again that it sounds so bad . Are you making a straight tube BMW? It has always been known that BMW 6s make your ears tick, but it doesn't have to be that way and another point against waves being the reason for this exceptional sound is even stranger, as this clever man discovered.

Hold that thought. the car with the buffer collectors that have the strongest reflection waves arethe ones that sound worse. Sport exhaust sounds like this where are the cars that sound like angels kiss your ears? Everyone has merchandising collectors. Now I could go ahead and tell you. about pressure waves and such, but I have a strict rule on this channel. Wow, so what's the problem? Was the choke really too long or was the camshaft just not wild enough judging by the sound? These eight-in-one heads don't seem to have a problem with the excessive length and the sound of the Japanese S600 with the 261 heads nor does it seem to suffer from the M camshaft either fps to the Century with the exhaust headers made by the same tuno there may be something Continuing, the smaller the change in area size, the weaker the reflected pressure wave.

The fusion manifold angle was chosen because that is what is recommended for good power. Fusion angles ranging from about 7° to about 17-18° are really optimal, but it seems like it's not optimal for the best sound, at least not when you fuse 12 tubes into a single collector and despite even optimize the firing order, you do this by loading the primary tubes into the manifold in sequential order, so it's like a Gatling jump area size seems to be too big to compensate, everything is big, six times the diameter of the pipe is so big that it doesn't seem to make a difference anymore and it turns out we're not the only ones who have that. problem, this German YouTuber has in the last two years built a car with the same engine just to get that sound and it seems that he did everything right, matching feathers 2 six in one, fused collectors and the engine generates even 50 horsepower more than the original and everything. that extra power just from the air filters the mapping and the exhaust has only one problem it sounds like that it doesn't sound anything like the Japanese S600 with 26 and one headers and the most obvious difference is the shallow merch collector so without many ideas and options left , let's copy what works, but it almost pains me to tell Tim, the owner and builder of the car, who spent the last three years relentlessly cutting and grinding not only the head but also the ball cage, manual transmission conversion, K steering angle, engine oil sum, individual complete bodies and even a homemade carbon fiber roof, which has also spent many months replicating multiple versions of the same manifold that we now fold in the trash and test this , almost P. but to change it we had to remove the motor h 2 3 4 5 6 7 8 m it looks so good it sounds oh sh sh Shake sh Shake sh sh sh sh what that's not normal yes, do you have time for M mi car? in the week before, I don't, Tim, I'll make it.

I have a secret meeting to secure funding for the next video. I may not get there in time to map the engine, maybe they can do it over the Internet and so on it is perfectly balanced. On the engine we made it unnoticed that an ignition outlet for an entire bank of cylinders had died a long time ago and effectively converted the engine into a six-cylinder, which later also appeared in the different coloring of the header pipes, but that was probably You will have noticed it from the beginning. At first it was like the 5,000 spectators at Iron Drift King, but as soon as we figured out what to look for, the fix was pretty easy, we just needed to change a pin on the ECU pin and change the settings in the software.

What are you doing? sound but, after all, it was worth changing the collector. I guess there's only one way to find out, but to change it we had to take the oh, that was quick. Tim thinks it was and although it sounds a little softer, it still doesn't sing. like this but he can make it sing apparently not but how can we make it sing and why do these headlines throw every Fury out the window? But to realize that I needed help at Princeton University. New Jersey's most famous foreign citizen lives. Professor Albert Einstein, who helped discover the atomic bomb, doesn't have fusion collectors, it doesn't make any sense, do you think standing waves maybe we've been looking at the wrong section of pipe?

I agree, I have been looking at the wrong section of pipe. The sound of the merchandising manifold depends on the section after the heads and the sound of the buffer manifold can become angel kisses with the right length on the camshaft. I just wish I could try it on a race engine with a really aggressive camshaft that I could refer to as the Luna, a 12 cylinder with all the exhaust ports on one side, so I could make some really short headers. What would that sound like? You went over budget. The show ended. It's radical. Yes. It gives me chills. so cool it's so cool