What does the number of exhaust pipes mean?
If each bank has its own exhaust system, there is more space for more exhaust to exit the engine. For example, if your vehicle has eight cylinders and a single exhaust, all the used air is trying to get out one pipe, one catalytic converter and one muffler.
Is exhaust pipe measured by ID or OD?
Inner diameter (I.D.) is the measurement from one inner wall to the other inner wall within a pipe or tube. Piping is most often measured in O.D. dimensions. It is designed to slip inside other components, most often a muffler.
Why does the 458 have 3 exhaust pipes?
At low speeds and low loads the bypass valve remains closed, so the full exhaust system is used, muffling the engine’s sound. When the engine is wound up, the bypass valves open, bypassing some/all of the muffling.
What thickness is exhaust pipe?
Most exhaust is 0.065″ wall thickness for ease of working with it. If you use the stainless 0.065″, it should last at least 100,000 miles with no salt. most headers are 18 gauge steel , most exhaust is 16 gauge or thicker , same material unless you got stainless headers or tails .
What car has three exhaust pipes?
Honda Civic Type R
A car with three exhaust tips is a rare find (see: Lexus LFA), so the new Honda Civic Type R and its triple exhaust outlet is an odd duck. The tiny pipe in the middle makes even less sense from an aesthetic point of view, but in reality, it’s specifically engineered to create a unique sound experience.
How much is a Ferrari 458?
When it was new, a base Ferrari 458 Italian commanded an MSRP of $239,340. With options, these cars could easily exceed the $300,000 mark. Five years on and used 458 prices have come down tremendously with the least expensive examples priced around $130,000.
What’s the formula for C / S in an exhaust system?
This suggests erring on the small side of primary pipe selection to preserve velocity with the minimum c/s required to service cylinder volume at peak torque; hence the formula for c/s area based on engine speed, cylinder volume, and VE.
What should the pipe diameter be for an exhaust system?
Optimizing for the torque peak provides the ideal primary pipe diameter, and since peak power is usually no more than 1,500 to 1,750 rpm above the torque peak, the selected pipe size has no trouble accommodating an exhaust volume that essentially flatlines, and then begins to fade rapidly.
How to calculate the torque peak in an exhaust system?
The formula can be written two ways: one to solve for primary pipe c/s area when the torque peak RPM is known or anticipated, and the other to predict torque peak engine speed based on a primary pipe cross section that is being considered.
How are valve timing and exhaust back pressure related?
To reduce this loss at part load, one alternative technique was used in the previous study. The idea of this technique is to control the engine load by changing the inlet valve timing instead of using throttling value. That means controlling the quantity of fresh charge entering into the cylinder.
This suggests erring on the small side of primary pipe selection to preserve velocity with the minimum c/s required to service cylinder volume at peak torque; hence the formula for c/s area based on engine speed, cylinder volume, and VE.
Optimizing for the torque peak provides the ideal primary pipe diameter, and since peak power is usually no more than 1,500 to 1,750 rpm above the torque peak, the selected pipe size has no trouble accommodating an exhaust volume that essentially flatlines, and then begins to fade rapidly.
What should the temperature of the exhaust be?
Cylinders 1 and 3 get to 350F to 400F, while the rest of the cylinders are 750F to 850F. I expect the temperatures to be around 725F, based off the displacement and the fuel mixture, so the lower temperatures for those 2 cylinders is throwing me a bit.
The formula can be written two ways: one to solve for primary pipe c/s area when the torque peak RPM is known or anticipated, and the other to predict torque peak engine speed based on a primary pipe cross section that is being considered.