"Spider" - replacing the exhaust manifold
Most of the exhaust losses occur in the exhaust manifold. In tuning, it is replaced with the so-called “spider” - it differs in the shape and order of connection of the exhaust pipes with the exhaust windows. “Spiders” are “short” and “long” (two U). If we take a 4-cylinder engine, then the “long” pipe diagram is built according to the formula 4-2-1, and the “short” one is 4-1. The “long” spider has a 2->1 coupling, while the “short” one has a more complex geometry.
The 4-1 spider installation provides additional power in a narrow speed range, beyond 6000 rpm, and is used for highly boosted engines with wide-phase camshafts, i.e. on sports cars. Spider 4-2-1 is suitable for amateur tuning, because... provide an increase in power and torque over a wide speed range. Adding power - 5-7%.
When tuning, intermediate straight pipes of increased diameter and resonators of reduced resistance are used. Instead of rigid connections, “corrugations” (bellows) or ball joints are installed. The latter do not create parasitic resonance frequencies, but are short-lived. But the “corrugations” soften shocks during startup and a sharp increase in power.
Experiments with exhaust pipes have proven that the length of the pipe does not affect the efficiency of cleaning the cylinder, but as it increases, the vacuum increases. Therefore, each engine operating mode corresponds to the optimal length of the exhaust pipe - the shorter and larger the diameter of the pipe, the lower its flow resistance.
Replacement with a sports “can”
Most tuning mufflers are universal, they can be adjusted to any car. For amateur tuning, it is recommended to buy only the end part, the so-called “can”. When choosing it, pay attention to the material from which it is made and the design: one or two outlets, straight pipes, pipes curved up or down. And, of course, the sound. Please note: after the muffler runs in, the timbre and tonality change.
Just replacing the standard muffler with a sports muffler will not produce results.
This is done to improve the sound of the car. With a sports muffler, the car will sound like a racing car, but this will not increase the power (or the increase will be minimal).
For maximum efficiency, you will have to change the entire standard exhaust system to a tuned one. Bass notes can be achieved not only by a straight pipe, but also by a sharp increase in its diameter at the outlet of the muffler. The synthetic fiber in the “can” does not add power, but only suppresses high noise.
What is a spider on a car for? What is a spider on a car, what is it for and how does it work.
Honda439
Uh.. this is overall more….. Sorcerer? And there’s certainly a lot to think about...
Good Tutan
REAL DISADVANTAGES OF REMOVING THE LADA VESTA CATALYST
Well said above, support... God be with you!
Vaz Domomi
Fuel consumption 14.2 is amazing
Double Axusuz
Yes, the damage to the environment is fucked up. Gazprom plants and, in fact, everything else, this is directly worse than EVERYTHING. Think for yourself.
Zapor Zutus
Damn, so smart sho. Why aren't you still working as an engineer? Laughed heartily at all this nonsense. Before my wife, I had two Lanos, so the cat was located there after the corrugation and why didn’t it burn out? In the film, I put the cat there just to add, there was zero difference in dynamics, I took copies and put a stronger and also didn’t see the difference. What the hell difference do you want to see after removing the kata and firmware? You have to dig deeper into the intake, exhaust, shafts and change the firmware, but in the coupe it’s minimal, you’ll see a noticeable difference. You are ananism. I upgraded to Euro2 to somehow improve the sensitivity of the gas pedal and remove the hesitation of the engine. Before the firmware update, the exhaust smoked and there was soot after the chip, the soot went away. This is the maximum that the firmware will solve. You can see the three-layer corrugation burned out.
Why do we need Spider?
“Spider” is the same manifold, but with separate removal of exhaust gases from the engine cylinders at the initial stage. The essence of the “Spider” is better purging and cleaning of the cylinders from exhaust gases due to pressure fluctuations in the exhaust system. To achieve the desired effect in the manufacture of the “Spider”, pipes of a certain length are used. Moreover, the pipes connected to the block head are installed in the order of engine operation.
There are two types of Spider currently sold on the market: 4-1 and 4-2-1. The difference between them comes down to the fact that in the first type, 4 pipes that are connected to the block head converge into one pipe, and it is already connected before the catalyst. The “spider” of the second type is different in that its 4 pipes first turn into 2 pipes, and those, in turn, into one, which is connected to the catalyst. In addition, the internal cavity of the “Spider” does not have the filling that is found in the standard manifold. This filling ensures compliance with the Euro-3 standard, and it also “presses” the VAZ 2114 engine.
The “Spider” type also influences the achievement of the desired effect. In order for pressure fluctuations in the exhaust system with type 4-1 to ensure good purging of the cylinders, the engine speed must be above 6500 rpm. That is, it is advisable to install such a “Spider” only on forced engines that provide high speeds.
Type 4-2-1 allows you to achieve the desired effect at low speeds, which makes it possible to use them on the VAZ-2114 even without modifications to the power plant.
It should be installed instead of a standard manifold, it will not particularly affect the operation of the engine; it will also require removing the catalyst and installing a resonator and a direct-flow exhaust system. In general, the entire exhaust system will have to be replaced. After such alterations, the VAZ-2114 will not meet any standards, but the car will become more playful. In addition, in the future there will be no need to replace a clogged catalyst, since it simply will not be in the system.
As for the disadvantages, the Spider provides a louder sound because the exhaust gases move through a direct-flow system. Many people like this sound, but when traveling long distances it can be very annoying. And the second drawback is that there can be no talk of any environmental friendliness.
But if you are tired of driving a VAZ-2114 with an engine that “drives” very calmly, then you should still install the “Spider”.
Jayo
What is a spider on a car for? What is a spider on a car, what is it for and how does it work.
TopolM Abamak
Honda439
Uh.. this is generally more..... Sorcerer?
And here's a lot to think about... Good Tutan
REAL DISADVANTAGES OF REMOVAL OF THE LADA VESTA CATALYST YEAR Well said above, support... The Lord is with you!
Vaz Domomi
Fuel consumption 14.2 awesome
Double Axusuz
Yes, the damage to the environment is fucked up.
Gazprom plants and, in fact, everything else, this is directly worse than EVERYTHING. Think for yourself. Zapor Zutus
Fuck, so smart sho.
Why aren't you still working as an engineer? Laughed heartily at all this nonsense. Before my wife, I had two Lanos, so the cat was located there after the corrugation and why didn’t it burn out? In the film, I put the cat there just to add, there was zero difference in dynamics, I took copies and put a stronger and also didn’t see the difference. What the hell difference do you want to see after removing the kata and firmware? You have to dig deeper into the intake, exhaust, shafts and change the firmware, but in the coupe it’s minimal, you’ll see a noticeable difference. You are ananism. I upgraded to Euro2 to somehow improve the sensitivity of the gas pedal and remove the hesitation of the engine. Before the firmware update, the exhaust smoked and there was soot after the chip, the soot went away. This is the maximum that the firmware will solve. You can see the three-layer corrugation burned out. Sphinx Lenek
I've been driving a Citroen for 10 years, knocked out to cut out (I didn't knock it out, I bought one), nothing lights up, nothing suits the engine, I changed the corrugation (10 years) twice, conclusion - Lada, shitty, the engines are atstoy and the catalyst is not here and!
