This website was designed to help and provide you with useful information on modifying a car for performance. The ideas and concepts I will provide you are the basic formulas that hotrodder’s around the world use to make cars go faster. Not only will I provide you with some cool techniques on how to “soup up” your car, but I will go in great detail to explain each component of the ICE (Internal Combustion Engine) and the science behind it . Along with that I will also give you an idea of how each component of the internal combustion engine can be upgraded to make your car faster. Simply put, I am giving you what I dub the “horsepower handbook”.
Starting with the most basic of all theories in the high performance world is engine volume. In the automotive world, we use the term “displacement”. Displacement is generally measured in, cubic inches (ci), cubic centimeters (cc), or liters (l).
1 liter = 61 cubic inches = 1000 cubic centimeters.
The basic concept of the MUSCLE CAR (the cars that dominated the 60’s and early 70’s) was to “put the biggest engine in the smallest car”. Guess what? This concept worked for many years until the EPA decided to make emissions standards. However even in this day and age many hotrodders rely on the concept of high displacement engines to make their car faster . A high displacement engine pushrod engine is still the first choice for drag cars, circle track cars, off-roaders, pullers and speedboats. In fact. all pre-1973 cars and all cars classified as race/classic cars are excempt from emissions testing. In my opinion, the domestic in-block cam V8 engine is your best bet in creating horsepower on a reasonable budget.
All car engines have combustion chambers. A combustion chamber is where the chemical energy is converted into mechanical energy. Essentially, it is a controlled explosion where oxygen and fuel (gasoline, diesel, alcohol, etc) + oxygen are ignited to create rotating mechanical energy or horsepower.
Carburetor vs (EFI) Electroinc Fuel Injection. Contrary to popular belief, a properly tuned carburetor will generally outperform a fuel injection system. The main advantages of a carbureter’s is that they flow better and they keep the fuel cooler thanks to the vacuum expansion property of a venturi provide exceptional performance at a low cost. However, for a daily driver, I would not recommend am engine powered by a carbureted fuel system.. However, while the carburetor may dominate in most performance aspects, modern fuel injection systems can provide near equal performance while providing higher higher efficient and thus MPG. Fuel efficency may not be such a big deal in short drag races but it is a huge deal in long course road races where extra weight and refuel time are extremely critical.
Of all the components in an engine, the camshaft/s has the biggest effect of any single engine part. The camshaft descr’ve take a physice class in eitheier high scool of college, you will have leanre If the combustion chamber is the heart of an engine, then the camshaft/s would be the brain.
There’s no replacement for displacement. – Some redneck
Horsepower sells cars; torque wins races – Carroll Shelby
When I was younger, I devoured car magazines, and over analyzed the factory specifications of every car on the market. Just like many other car enthusiasts out there my assumption on a cars performance was usually based on a 0-60mph acceleration figure.
Truth be told, the 0-60 is actually a pretty worthless comparison of a cars straight line performance.
The 0-60mph time is an ineffective evaluation of a cars performance for several reasons. First off, the 0-60 mph is simply too short for an accurate measurement. Many cars cannot reach a speed of 60mph in first gear, and as a result they must use 2nd or even 3rd gear to reach this speed. Shifting takes time whether you’re car is equipped with a manual or an automatic transmission and as a result the 0-60mph elapsed time is usually much slower when using multiple gears. Also, most high performance cars have a high power band which gives them the advantage on drag stips, or a road circuits but not on the street (unless your like me, and push your car past the speed limit on a regular basis J). Another big factor of the 0-60 is traction. Tires are the most critical aspect of a high performance car because without traction, you won’t be going anywhere. For maximum traction the ideal setup is to have your vehicle equipped with the widest and softest drag slicks along with a good suspension setup that will keep your tires planted to the pavement at all times. However, you must keep in mind that most performance tires are not the best choice for the street because not all roads are flat and dry. The temperature of the asphalt can also highly effect how much traction you’ll be getting. Not to mention high performance ties wear out quicker than standard tires. All in all I would recommend a set of drag radials for a street car. A good set of sport tires will provide you with superior traction on dry pave roads but will still allow you to drive in wet conditions. If you live in an area that experiences snow and/or ice during the winter months, I would also highly recommend a set of high profile winter tires with steel wheels to help avoid any unessasary accidents. Trust me on this! They are cheap and they work great!
Horsepower per liter. This is a pretty useless measurement of an engine performance hat many people have adopted. Generally the cars with the highest horesper to liter ratios are the cars that are already maxed out from the factory.0-60
Is about the most worthless way to judge a cars performance. Traction itself can make a world of difference, and in some cases a simple
Is the most accurate way to judge a cars straight line performance.
Two of my favorite cars growing up were the E46 BMW M3 and The C5 Chevrolet Corvette. While the cars are built very differently from each other, they both were built with the same performance goal in mind: extremely fast but affordable sports cars from the factory. Now the M3 came out of the factory with a 3.2 liter inline 6 cylinder engine producing 333 hp and 265 ft pounds of torque. The C5 Corvette came with a 5.7 liter third generation small block that was rate at 350 hp and xxx torque. The BMW M3 M54 engine was rated at 333hp and 265 torque. This engine features an inline 6 engine with dual overhead camshafts, with variable exhaust timing on both the exhaust an intake cams. Simply put, this engine was already built to high performance specification and without a Forced induction steup, the E46 M3 has a hard time gaining any
While I loved both of these cars dearly, the Corvette takes the cake by far. This is an all aluminum chassis car with a fiberglass body and an all aluminum V8 producing 350 hp and xxxx torque right from the factory. This car can pull a high 12 scond quarter mile, and will easily out handle most sports cars with its gas shocks and fiberglass springs. BGest of all, the LS1 Corvete engine has tons of modification
Choosing the right car
More Air – The most basic and fundamental component of creating horsepower is oxygen. Getting fuel into an engine is easy, but
Compression Ratio – Increasing the compression ratio in any car is a sureful way to make more horsepower. Higher compression increases fuel atomization why leads to a bigger explosion. Not only will higher compression give your car more power, but it will also increase fuel efficiency.
Power Vs. Potential – There are lots of cars that come out of the factory with brillitant hors
You can have all the horsepower in the world but it won’t do you any good unless you can transfer it to the ground.
Let’s face it, speed costs money, and if you want a ride with an excess of horsepower, you better be preparied to spend a lot on both the initial cost of the vehicle and the insurance rates. To help beat the system, I’ve created a list of cars that are easy to hotrod and are therefore the best way to build a fast car on a budget.
Bore – All internal combustion engine’s are measured by their total displacement. The bore of a piston represents the area of a singe cylinder.
Stoke – An internal combustion engine are measured by their total displacement. The stroke of a piston represents the total vertical depth of a cylinder that a piston will trave.
Camshaft – this controls the rate at which your valves open. Most high performance camshafts feature high lift,. extended duration, and lots of overlap. All three of these techniques work together by flowing more air and fuel to your cylinders. The downside of a “big cam/s” is that they can make your car unresponsive and boggy in the low rpm range as they are designed for maximum horsepower in the high rpm range.
Valves – these control how much air and fuel and enter your cylinder. Bigger valves and multiple valves will provide more airflow. The most common way to provide more airflow is with the use of a bigger camshaft(s) which will open the valves quicker and/or keep the open longer.
High Stall Converter – A torque converter is a device that is only applied to cars equipped with an automatic transmission. With a higher stall converter, a car will be able to launch at a higher rpm, which will take advantage of that cars specific powerband. A torque converter will also provide a constantly chagring gear reduction which can help a car accelerate from a standstill.