Track Racing Valve

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In NASCAR, the cars need to be stock and are sedans. The majority of the cars are American made. Chevy and ford seem to be the preferred make for NASCAR driver's. Although, recently you might have noticed an increase in Toyota vehicles as well. NASCAR does have specific requirements for the cars that enter the races.

Part of the requirements are stock parts, for example, the hood and trunk are stock. Although, there can be modifications done to other parts of the vehicles, they had to say within guidelines set by NASCAR. For the most part, the only thing that is left as stock on the cars is the hood and the trunk.

In the recent past it was common to notice similarities among the cars in a race. Typically the majority of the cars weigh around 3,300 pounds and the wheelbase is around 110 inches. The shape of the cars needs to meet specific criteria. This is to ensure equality among the driver's. One would have to win because of their skill, not because they had different aerodynamics. Also, this would minimize some of the tactics used by the drivers to get ahead.

Safety is very important when it comes to the design of the cars and the interior of them as well. Some of the features for safety that can be found inside a NASCAR are a reinforced gas tank, HANS (head and neck support system), roll cage and a windshield made of Lexan. The same material that is used to make riot shields.

All of the cars that are raced in the Nextel Cup Series have criteria they must follow. These specifications are V8 engines with a carburetor and rear wheel drive. All of the motors have to have a pushrod valve train. Each of the cylinders has to be worked by two valves, with a limitation of 5.8 liters displacement. With specifications like these, a NASCAR could easily run at over 9,000 rpm. However, because there is also a criteria for the transmission in a NASCAR, they are unable to run at the 9,000 rpm. The gear ratio is 1:1 and the rest of the ratios are set at 1.28:1. Technically, these cars could run in the Formula One races.

In 2006, NASCAR announced the new template for the cars. The CAR of Tomorrow, seems to still have many of the drivers and teams concerned. Although, with the change comes better safety, many are still wanting to stay with the current design template. The new design will be enforced in 2009 for all competitors.

The Nextel Cup will be changing its name soon. However, the game will be the same. The drivers and their teams will continue to find new and improved ways to increase the driving skills and the speed of the cars.

Jon Ryan

www.mynascarracingsite.com [http://www.mynascarracingsite.com]

For more articles, information, and resources on NASCAR, visit My NASCAR Racing Site [http://www.mynascarracingsite.com]

Using A Performance Throttle Body For Racing

When designing your engine for performance and winning races, you should at all times focus on getting the most air into your car as you can. The more air that can enter into the motor, the more fuel which can be combined with it and then ignited in order to create horsepower. The element of your engine which actually controls how much air is permitted to come in is called the throttle body.

The throttle body is pretty easy to spot. It is the circular or rectangular opening on top of, or on the side of the intake which can have one or more flat butterfly valves covering the opening. When you press down on the gas pedal with your foot, what you are really doing is opening up this valve on the throttle body to let more air in which in turn sucks more fuel into the engine.

Since more air equals more horsepower, does that mean that a bigger throttle body which lets in more air means you will be able to increase your engines performance? In general, yes. A larger throttle body will suck in more air, and as long as your engine is capable of keeping up with the fuel demand then you should see a horsepower increase. Performance-oriented throttle bodies are also often better able to provide precise control over how much air is entering, giving you a more accurate throttle. However, keep in mind that an engine is a system, and it should be treated that way. Bolt-on components like throttle bodies can help to improve your performance, but they work much better when matched with the proper valves, exhaust system and overall tuning.

For the ultimate in performance, the key is not to go bigger, but actually add supplementary throttle bodies to your intake. In fact, you can even add a throttle body for each cylinder in your engine. These are called individual throttle bodies, and together with a special intake they can provide a direct path to air for every cylinder individually. Individual throttle bodies are the ultimate in performance for this type of modification, but their implementation is fairly complicated.

Getting each of the throttle bodies to open at exactly the right time in tune with each other is a difficult proposition. Not only that, but out on the street potholes, speed bumps and just general road roughness can provide enough vibration to seriously interfere with the correct calibration of these throttle bodies. It is usually a better idea to reserve the use of ITBs for cars that will only be used on the track unless of course, you have the time and energy to devote to making sure that these throttle bodies stay in tune on your daily driver.

Whichever route you decide to go, whether ITB or larger single or dual throttle bodies, you need to make sure that you arent overloading your engines capacity. If you cant get enough fuel into your engine to make use of the extra air, you might actually decrease your performance. A larger fuel pump and fuel injectors with a higher flow rate can help to make sure that your new throttle body solution gives you the horsepower gains you are looking for.

About the Author

Justina Mathews writes issues that currently affect the performance car enthusiast. She also writes about issues that affect the street tuner industry, as well as import scene lifestyle. She's a staff writer for performance throttle body.

Is there an stand alone engine managment for automatic acura integras (90-93)?

I compete in dirt track racing with an 90 acura integra. I currently have headers, cold air intake and head work. Oversized Crowler Valves, Daul Springs and polished. I have to run the auto tranny due to its gearing on the short dirt track. I am lookin for a stand alone such as a megasquirt so I can advance timing, fuel and air to the max for racing. All information is appreciated.
The engine is a B18. The problem I am having is that I can not find any stand alone engine management for the integras with automatic transmissions. Can you hook up a stand alone to a car with an automatic transmission?

Which teg? B16, B18B, D16??? Any of the major EMS should work fine, but a few I have know work are haltec, and AEM. I have dealt with an AEM on a B18B and worked great, I've also tuned a K20 with an AEM EMS and it worked great. Personally my favorite EMS is a hydra, great resolution and features like 3d anti-lag(turbo toy), launch control, wideband o2 input but I just poked on their site and they don't make a plug and play solution for older tegs. I have limited experience with megasquirt (used on it on my old 280z with a chevy 350 under the bonnet) and it worked great on a simple TPI smallblock, but I've never tried it on a honda.

Honestly your best bet for total control is an AEM EMS, very good product, very easy to wire, and pretty easy to tune.

Whatever you do, make sure you do a conservative tune for the track, I've trashed quite a few motors from being a bit too aggressive in my tune.

Ton-up for Alfa: Party time for Alfisti around the globe
Alfa Romeo is celebrating its 100th birthday in 2010 and Alfisti all around the world have been raising jugs of chianti in honour of the most beautiful automobile script ever to grace a bootlid or, more tellingly, a camshaft cover.

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