The Basics of Choosing the Optimal Torque Converter for Your Vehicle

The majority of drag racing and high performance vehicles are equipped with an automatic transmission, but with the addition of an aftermarket torque converter, the car owner can enjoy the peak level of performance from the vehicle. Choosing the best torque converter has a number of benefits for the vehicle and its performance including better speed and acceleration.

A torque converter is essentially a fluid coupler that allows power to be transferred from the engine to the transmission. With the use of a torque converter, the vehicle has the ability to idle without actually moving forward.

Factors to Consider When Choosing Higher Performance Torque Converters

When selecting a torque converter, the first factor to assess is the weight of a vehicle. In general, guidelines for selecting a torque converter specify that the heavier the vehicle, the higher the stall that is required.

The second consideration is the amount of torque produced by the vehicle’s engine. Bigger cubic engines, such as diesel engines generally create more torque than engines that have a smaller cubic size. Before selecting a torque converter, the RPM made by the motor at its torque should be examined. Larger cubic engines will generally make more torque at a lower level of RPM, as compared to smaller engines.

The final important factor to be considered in the selection of a torque converter is the use of the vehicle in which the converter will be in—for example, will the vehicle be used for drag racing, as a street car or for towing? Additionally, it’s wise to consider whether maximum performance or maximum mileage is most important with the use of the vehicle. Each of these considerations will play an important role in the torque converter that is chosen. With regard to torque converters, a one-size-fits-all mentality is not the best way to approach the decision, because vehicles have unique and specific requirements.

Additional Considerations

As well as the primary factors of engine size, vehicle weight and applications, there are other ways that vehicle owners can determine what torque converter is going to be most appropriate for their unique purposes.

The gear ratio also plays a pivotal role. The gear ratios of a vehicle are required in order to calculate output gear ratios, engine RPM and vehicle RPM.

Custom vs. Off-the-Shelf Converters

The best course of action when selecting a torque converter is to work with a professional manufacturer in order to ensure all calculations and specifications are properly addressed. Because of the specific nature of the design process required to ensure that a torque converter matches the needs of a vehicle and its applications, most people opt to have custom torque converters built, rather than choosing an off-the-shelf torque converter that may not provide the maximum level of performance.

Tips When Installing A Torque Converter

As a car enthusiast you realize that installing a torque converter can greatly improve the performance of your car. Before you install one of these in your hot rod or high performance vehicle make sure to keep the following issues in mind. We understand that you are literally dying to install the new torque converter in your vehicle, but if done incorrectly you could be dealing with problems down the road.

Prepare The Crankshaft

When you are installing torque converters it is important to prepare the crankshaft for installation. This includes checking the crankshaft for abnormalities including burrs and a shaft that is not completely round.

Check The Flex Plate

You should also check the flex plate for cracks as well as teeth which have worn down significantly. All of these can result in a converter not performing as expected.

Prepare The Converter

When installing a torque converter it is recommended that you use about one quart of transmission fluid which should be poured into the converter prior to installation.

If you follow these simple steps you will reduce your converter problems significantly. For any other questions about the installation process, give the professionals at Precision Industries a call today.


For More Power and Speed, Upgrade to a Custom Torque Converter

If the torque converter on your car is working properly, should you bother to change it? The answer to that question is yes, if you’re interested in performance.

A factory torque converter will do its job by transferring power from the engine to the drivetrain, causing your wheels to turn. It has most likely been designed to do this in an efficient and safe manner, but without any more power than it needs to get your car going.

However, if you are looking for better performance, either for weekend racing or just to be the fastest car on the block, you want to have a high performance torque converter from Precision Industries. Precision Industries designs their converters to maximize the torque multiplication so that when you start up from a stop, you can take off.

Custom torque converters from Precision Industries have been designed by racing experts, and proven on the track. So you know that they will work well for your street car. To get extra power from your car, upgrade to a custom torque converter from Precision Industries.

Stall Speed: The Difference Between Brake and Flash Stall

As you are making adjustments to your car to improve your performance in drag racing, one thing you want to know is the stall speed of your torque converter. Stall speed is the point where the engine can’t turn any faster. By knowing the stall, you can figure out which torque converter you should select to replace the factory converter on your car.

There are a number of ways to find out what the stall is on your torque converter. The two most popular are brake stall and flash stall. Both of these are tests that you can do without any special equipment.

Brake stall is found by stepping on your brakes and revving the engine, and noting the maximum RPM you get. Be sure not to rev the engine more than a couple of seconds, or you run the risk of damaging your transmission. Because the brakes on a car usually won’t hold until the engine reaches its stall point, you won’t have your true stall, but it will be close.

Another way to test your stall is to take off at open throttle, and see what the RPM of your engine is at launch. This is known as flash stall.

When you are talking to the experts at Precision Industries about a high performance torque converter for your car, make sure you tell them if your stall measurement is brake stall or flash stall. They will use that information, along with a database of cars, converters and modifications, to help you determine the best custom torque converter for your car.

Why Worry about Stall Speed?

Why should you worry about the stall speed on your torque converter? Well, if you drive your car to and from work, and nowhere else, you don’t have to. Your factory torque converter will do the job just fine.

But, if you like to drag race occasionally at the track with your street car, then you will be more interested in your stall speed. That’s because having a high performance torque converter can give you a higher stall speed, which will increase your torque multiplication and give you more power when you take off. In a race, this extra boost can shave time off of your run, and a few tenths of a second can make the difference between winning and losing.

So, if you race, you want to find the optimal stall speed for your car that will allow you to take off fast. That’s where a custom torque converter from Precision Industries comes in.

It’s not enough to just pick a high stall speed for your torque converter and install it. You also need to take into consideration your vehicle weight, engine and any other modifications you’ve done, and find the right one for your car.

The experts at Precision Industries have many years of racing, under their belts, as well as access to a database of information about cars with PI torque converters installed. They can see what others with similar make and models of cars have installed, and help you determine the best torque converter for your car.


Testing Your Brake Stall Speed

The most accurate way to test the stall speed on your torque converter is with a transbrake. But if you don’t have one installed on your car, you can still get a good idea of what your stall speed is. You can do this by testing your brake stall, which will be fairly close to your true stall.

First, make sure your car is prepared. You will want to make sure that your fluids are all topped off before you start, and that your tachometer works. You will also need to check that it’s safe to do a brake stall test on your transmission. Some newer transmissions can be damaged by this process. Set the hand brake and chock your wheels so your car won’t move.

Next, press the brake pedal all the way down, and start the car. Firmly hold the brake pedal down while you floor your accelerator for two or three seconds, making note of the maximum RPM on the tachometer. Be careful to never do this for more than five seconds, or you risk causing permanent damage to your transmission.

The RPM reading you saw is your brake stall speed. This will be close to your true stall, and can help you determine which custom torque converter from Precision Industries will be right for your car. If you need further help, contact the experts at Precision Industries today.

Give Your Street Car an Edge with a Custom Torque Converter

Torque converters have come a long way since first introduced in the automotive industry. From the first models available in the 1950s, torque converters now are able to operate efficiently and provide torque multiplication to allow you extra power when you start up from a complete stop. This has made them popular in drag racing, allowing for exciting starts during races.

When you are using your street car to race, though, your torque converter probably isn’t performing to peak efficiency. That’s because the stock converters that come from your car’s manufacturer aren’t designed for maximum torque multiplication. The stall speed, or maximum RPMs of the engine capable before you start, will be set to a lower level than you need in racing when you are using a stock converter.

You can still race with the same car you commute to work in. But you’ll want to make an upgrade to improve your performance in drag racing. And that is adding a custom torque converter from Precision Industries. With a custom torque converter designed specifically for your car, you can achieve a higher stall speed and more power off the line, without sacrificing fuel efficiency for the rest of your driving. Precision Industries makes high performance torque converters for all makes of cars. Talk to them today to find out which one will work best for you.


Protect Against Failure by Upgrading to a Custom Torque Converter

One common failure point in your car is the torque converter. That’s because every time you start up from a stop, you apply pressure and heat to the torque converter as it transfers power from the engine to the transmission. When you drive your street car, you are heating up and cooling down your torque converter. This will happen thousands of times over the life of your car.   The repeated heating and cooling puts your torque converter in your automatic transmission under a lot of stress.  If you add in drag racing on top of this, you’re putting even more stress when your torque converter.

Factory installed torque converters simply weren’t made to take this additional stress. That’s one of the reasons why many people who are weekend racers in their streetcars choose to install a custom torque converter into their vehicle. A Precision Industries high performance torque converter is built to withstand the heat and stress from racing and day-to-day use. Precision Industries uses specially tooled front billet covers made out of a single piece of metal to reduce points of failure. They also have a larger clutch area, and turbine blades that have been designed to distribute vortex fluid efficiently, as well as a turbine designed to handle the heat.

With a Precision Industries custom torque converter covered by a five-year warranty, you won’t have to worry about failure. Check out the line of Precision Industries torque converters available, and contact the company to speak to a racing expert find out which one will be best for your car.

How to Determine Your Stall Speed

There are different ways of determining the stall speed of your torque converter. They are known as true stall, brake stall, and flash stall.

True stall is the only way you can determine your actual stall speed, and must be done with a transbrake installed on your car. This will allow you to rev your engine to stall without your car slipping forward.

Brake stall is when you put your car in gear but hold down the brakes, and rev your car’s engine until the brakes can no longer hold. Because your car will move before you reach maximum stall, this is not a true indication of your stall speed. However, it will get you close.

To determine flash stall, you can take off at full throttle and look at the RPMs of your engine, noting with the maximum is. Again, this will get you a close estimate of your stall speed.

While using a transbrake is the only true test of your stall speed, most people will end up relying on their brake stall. An important thing to remember is to not hold your car for very long, so that you don’t risk heating your torque converter too much.

Even if you don’t know your true stall, the experts at Precision Industries can still help you select a high performance torque converter to best suit your car. They have years of data of similar makes and models, and what converter worked for them. Call them to discuss selecting a custom torque converter for your car.


Don’t Waste Your Money on a “Custom” Torque Converter Rebuilt from OEM Parts

Your high performance vehicle deserves the best parts you can get for it. When you are looking to upgrade the torque converter on your car, you don’t want to mess around. You want to get the best of piece of equipment that will give you the best performance, and last for the life of your car.

There are many companies that sell what they call “custom” torque converters. However, most of them simply reassemble OEM parts and charge you a bundle for them. That’s not the case at Precision Industries. Terry Hendrick, a racing legend, is known throughout the industry as a master of using technology to coax maximum performance out of the car. Under his supervision, Precision Industries torque converters have billet covers that they manufacture on-site. This allows the converter to better withstand the heat and stress of racing, as well as day-to-day driving. Precision Industries’ custom torque converter also comes with a special lockup clutch and clutch lining, special braced turbine and turbine hub, and other features. Years of racing experience went into the design. They also back all this up with a five year warranty.

Sure, you can get cheaper torque converters for your car. When your aim is performance, do you really want to save a few dollars for a lesser product? Contact Precision Industries today.