Author: pumaracing.co.uk

Why Precision Matters in Flywheel Balancing: When balancing a flywheel or even a car wheel precision mounting is absolutely critical. A seemingly minor imperfection, such as a burr on the flange, can cause the part to sit off-centre. Even when there’s no visible defect, there’s always a margin for error when using generic cones to mount components. These cones grip inconsistently depending on how they’re tightened, which affects the repeatability and accuracy of the balance. To eliminate that variability, I use a custom-made mandrel tailored to each flywheel type. It’s a press-fit into the central hole, ensuring perfect concentricity. Yes,…

Forced induction engines present an additional level of detail in the power potential calculation but one that is fairly easily resolved. The first thing to appreciate is that forced induction increases power potential in direct ratio to the increase in inlet manifold pressure. A normally aspirated engine has at best an inlet manifold pressure equal to atmospheric pressure, assuming no great flow losses in the air filtration system, throttle body or carb. At sea level this is about 14.7 psi. If it were possible to double this air pressure then power would double also. What the turbo or super charger…

Calculate Engine Power Accurately Using Torque and RPM The first two articles have covered the main items that need to be considered when trying to evaluate the power potential of an engine. All that needs to be done now is to look at the equations that turn valve area into potential bhp. We will assume that all ancillary parts of the engine design such as induction system, exhaust system, compression ratio etc can be modified such as to impose no further restriction on the power potential. What we are going to calculate is the potential peak power of a fully…

Understanding Relation Between Power and Torque in Engine Design We’ve seen in the previous article how torque and power are defined and calculated – now let’s look more closely at how they relate to engine design. The concept of an engine’s torque output seems to be confusing to many people judging by newsgroup threads but it needs to be clearly understood if one is to design the best ways to improve power output. Torque can be thought of as the instantaneous turning force generated at the crankshaft. As such it is a measure of the amount of energy being developed…

The Effects of Lightening a Flywheel on Vehicle Performance When the flywheel of a car is lightened it can have a great effect on acceleration – much more than just the weight saving as a proportion of the total vehicle weight would account for. This is because rotating components store rotational energy as well as having to be accelerated in a linear direction along with the rest of the car’s mass. The faster a component rotates, the greater the amount of rotational kinetic energy that ends up being stored in it. The Physics Behind the Effect Lightening Flywheels The engine…

Racing cars is an international sport, and there are numerous car racing events going on around the world each year. At the beginning, car races were a very intimate sport, especially when it comes to the most famous car races in the world. Most of these races were set up and organized by the racers themselves, who had a passion for racing and speed. 1. LE MANS Race – Possibly the Most Famous Race of All! The Le Mans is a 24-hour endurance race that takes place each year on the Circuit de la Sarthe, a closed-off public road circuit…

Make your car run like a winner by knowing behind-the-wheel lessons. A car engine does not work well without proper and clean air, oil and fuel facilities. Therefore, never ignore car filters; they are the most important part of efficient cars. Car filters help you keep your favourite car away from contaminants that cause clogging, causing problems, and affecting car performance. The Cars have four main filters: Air filter, Cabin filter, Oil filter, and fuel filter. It is very important to know how these filters work and why it is important to change them in time. This can easily prevent…

EGR Valve: Complete Guide to Function, Problems, and Removal What is an EGR Valve? The EGR Valve works by recirculating a determined quantity of the exhaust gases back right into the engine through the air intake system, reducing the number of discharges the engine generates. This gas is continuously being recirculated through the engine, which over time will trigger an accumulation of the carbon deposits in the intake manifold as well as various other components including the EGR shutoff. What is an EGR Cooler? The EGR Cooler is designed to lower the temperature level of the exhaust gases prior to…

Understanding ECU Remapping: A Comprehensive Guide ECU, or Electronic control unit, is the electronic device that manages all the intricate functions of your vehicle’s engine. This unit sends signals to your vehicle’s ECU or Electronic control unit. It then interprets these signals, changes them into instructions in your vehicle’s ECU reads. The result is a precise and proper performance every time your vehicle shifts into gear. What is ECU Remapping? ECU remapping, or chip tuning, is now getting a lot of attention from performance car enthusiasts because it allows raising the vehicle s torque, horsepower and also has a considerable…

Understanding the ECU (Electronic Control Unit) An ECU is what the technicians call an Electronic Control Unit or ECU. It is the brain of your vehicle – a computer that tells your car what to do and when to do it. The ECU is what keeps your engine from jumping out of sync, from smoking while you are driving, and from making that irritating squeal when you jump out of your car in traffic. And if the end malfunctions, well then it is definitely a problem and a reason for you to find out how to reset the ECU. Step-by-Step…