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There is probably a transmission shop in almost every town in the country that can build a bulletproof transmission for American made vehicles. Whether it is a late model Mustang or a 60′s Chevelle, there are lots of aftermarket components and many years of technology available for the transmission rebuilder to utilize.

The same cannot be said for the 4EAT automatic transmissions found in Subaru vehicles. In factory form, these transmissions demonstrate several problem areas that can cause failure in as little as 20,000 miles with a stock engine and even sooner in modified applications.

Poor shift quality, anemic factory components, and above all, improperly configured torque converters plague the automatic transmission equipped vehicle. This is in conjunction with the automatic’s propensity to burn out the high clutch pack (third gear) and the 2-4 clutches (second and fourth gear) with even moderate increases in engine output.

Realizing the need to take import and sport compact automatics to their fullest potential, IPT Performance Transmissions- a New Jersey based company, committed a large portion of their research time and dollars toward improving the Subaru automatic transmission.

First up on the hit parade of internal modifications is the need to address the issue of valve body calibration. The valve body mods are really the foundation of any performance trans rebuild. An automatic transmission utilizes a network of valves, servos, solenoids, orifices, accumulators and passages that control and route hydraulic pressure to the appropriate places to apply the clutches and bands.

Without going into elaborate detail which would fall outside the scope of this article, suffice it to say that modifying the valve body effectively changes the rate of clutch apply and also increases the clamping force with which these components have to work with. This is why shift kits and modified valve bodies produce that firm, performance type shift that increases the transmission’s overall capacity for power handling.

Next, all critical support bushings need to be replaced to insure that the centerline of the transmission runs in perfect alignment with the centerline of the crankshaft. Ignoring this step puts a lot of undue stress on the internal transmission components.

Many of the other parts also such as the pinion shaft, the front differential ring gear and the planetary gearset undergo various metallurgical processes such as heat treating, Meta-Lax stress relieving, and cryogenic treatment (freezing them in liquid nitrogen at -300 degrees Fahrenheit to ‘reset’ the part’s structure on the molecular level).

Lastly, all of the required seals and gaskets are changed to materials that are better able to cope with the heat and stress that is common in high powered applications. Performance clutches and steel reaction plates are installed and their clearances set to much more exacting specifications than those that are used by the factory. Most importantly, IPT utilizes a proprietary six disk high clutch pack and a five disk 2-4 clutch pack which increases the second, third, and fourth gear torque capacity by over 25% versus the factory set up- this is the key to getting a high powered vehicle make a 1-2, 2-3, and 3-4 shift instead of just bouncing off the rev limiter.

As for the modifications outside of the gearbox, the next thing of importance is of course the torque converter. In an automatic equipped vehicle, one of the most important components in the entire car in regards to optimizing performance is a correctly configured converter.

In addition to being made with many strength improvements over the factory piece, a performance converter enables a vehicle to better take advantage of the RPM range at which maximum power is made. In simple terms, a properly designed converter will allow a vehicle to launch under more power by increasing the rpm at which the launch takes place. In essence, a torque converter is an infinitely variable transmission in and of itself, and altering its torque multiplying characteristics becomes absolutely necessary when other variables in the vehicle are changed (bigger turbos and bigger cams).

Even in otherwise stock turbocharged Subaru vehicles, ET reductions of over one full second are not at all uncommon with the addition of a properly configured converter.

Transmission, torque converter and valve body upgrades are not only for American made vehicles anymore. Increased performance, durability and more efficient shifting is now available for the vehicles of almost every manufacturer- thanks in part to the few companies that are willing to do the research and development work required for this rapidly growing segment of the automotive aftermarket.

You will benefit from using residential wiring diagrams if you plan on completing electrical wiring projects in your home. An electrical wiring diagram can be as simple as a diagram showing how to install a new switch in your hallway, or as complex as the complete electrical blueprint for your new home.

Although household electricity is nothing to play around with, in many ways, wiring is simpler than other repair and remodeling skills such as carpentry. Once you’ve learned some basic skills such as installing boxes, running cable, and splicing, you just need to determine which wire goes where. This is why a good wiring diagram is important for wiring your home safely. Keep your diagrams near-by. You’ll want to refer to them often as you work on your project.

Wire Colors:

Electrical wiring diagrams that are in color have an advantage over ones that are black and white only. The wires will be colored the same as the actual wires you will be using. Commonly, the green wire is ground, white or off-white is neutral, and black, red or other colors indicate the hot wire. In some instances, such as some switch legs, the function of the wires will be indicated by colored electrical tape.

Symbols:

When looking at any residential wiring diagram, start by familiarizing yourself with the symbols that are being used. The electrical symbols will not only show where something is to be installed, but what type of device is being installed. Make sure you understand the symbols on your diagram before beginning your project. There should be a chart on your diagram showing the different symbols being used, much like a legend on a map.

For example, a surface ceiling light will be shown by one symbol, a recessed ceiling light will have a different symbol, and a surface fluorescent light will have another symbol. Each type of switch will have a different symbol and so will the various outlets. You’ll even find symbols showing the location of smoke detectors, your doorbell chime, and the thermostat.

Switches:

When it comes to household electricity, there’s a lot more to consider than simply turning a switch On and Off. Some of the most common questions electricians receive involve switches. Once you understand the different types of switches and follow a good wiring diagram, you should be able to install a new switch in your home.

Here are some of the more common switching configurations:

A Single-Pole Switch provides switching from one location only. “Single-Pole” may sound simple, but there are different ways to wire a Single-Pole Switch and a set of electrical wiring diagrams will explain each of them to you clearly.

3-Way Switches are used to control one or more fixtures from two locations. This is a common configuration in hallways and staircases. There are many ways to wire a 3-Way Switch. The power can start at a fixture or either of the two switches. Without a wiring diagram it can be very easy to make a serious mistake.

A wiring diagram will even take the mystery out of wiring a 3-Way Dimmer Switch. What a great way to enjoy softer light and a reduced energy bill!

One of the most complicated wiring configurations is a 4-Way Switch. These switches enable you to control one or more fixtures from three or more locations. It would be almost impossible to write the instructions in a way that you could simply read them and complete your project. However, a good wiring diagram will make it possible for you to successfully and safely tackle wiring 4-Way Switches.

As important as electrical wiring diagrams are to the successful completion of your wiring project, safety and respect for electricity are essential. Never work on live circuits. Before you begin your project, identify the circuit you’re working on and then turn off power to that circuit at the main panel. Then confirm that the power is off with a voltage tester. If at any time you feel unsure about what you’re doing, please call a licensed electrical contractor.

Do you know how to find dining table diagrams for a custom-made item you’ve been thinking about but need some help with? Rather than wasting your time and materials on a design, you need to be sure you’ll have consistent help along the way. I advise you to simply have a look at the material contained here and realize what information is well within reach and why it’ll make your life a lot easier.

Click here for dining table diagrams !

You can build almost anything… think of all the possible handcrafted items – you can set your sights on loads of impressive items. It is really amazing how with a little time and effort the great ideas you’ve had can result in superior handmade projects. It’s not necessary to postpone this till another time – you can now begin to realize your woodworking goals. We can all benefit from an easy way to get started, courtesy of an internet site, which offers immediate help to people of all skill levels. There is a particular blend of knowledge required to be a master craftsman and to provide guidance to the layman – these people seem to offer the whole package.

Creating things from timber is an ancient art – you can very likely just simply do a search for “wood art” for some prime examples of this art. Of course you can learn simply by experimenting, but there’s a faster and more reliable method – take advantage of excellent instruction and you will be up and running with this sooner than you think. If you get your plans and instruction from the masters, you will be able to bypass costly, time-wasting, and frustrating mistakes and instead will be presenting your work with pride.

Your first project might be fairly uncomplicated, but even if you’d rather take on something more complex, with the right dining table diagrams, you don’t have to limit yourself. You may be just a beginner, but when you’re aided by knowledgeable instructors, you will soon acquire the confidence you need. It’s such an easy process to get going with your new craft – very quickly you’ll finally pin down the necessary guidelines for your new hobby. It may take some time before you can start taking orders for your custom work, but with time and perseverance, you can go on to bigger and better projects. I would say that these blueprints would be an excellent idea for any “crafty” people you know – some gentle persuasion for them to get creative.