Torque converter stall speed calculator

STALL SPEED Torque converter stall is a commonly used term and is commonly misunderstood. Stall is the speed at which the converter will hold the engine speed and not allow further gain (i.e., the engine stalls). The key word here is engine. The speed at which stall occurs with a given converter is a function of engine peak torque. Click on the headings below to expand the specific calculators needed.

Converter Slip Calculator. There are some trends, which appear in the torque converter selection process, that tend to influence the selection of stall speed. For example, a three- speed prefers a converter designed to work. DRIVABILITY of a vehicle with a higher stall speed can be substantially reduced with a poorly designed torque converter. Excessive heat generating slippage and rpm flair up can make street driving miserable and costly with a converter that is too.

Typically used in power-adder applications. Stall speed will vary according to your particular engine combination.

Each converter builder will have to calculate things based on the way they do the internals of the converter because there is more than one way to skin a cat. Stall refers to the maximum speed a the motor can achieve against the converter when the turbine is locked and prevented from rotating. The rpm achieved ( stall speed ) will be a function of the engine torque and the converter design. The biggest part of the torque converter that will change the stall speed is the stator.

A torque converter ’s stator is what sends the fluid to the turbine, which in turn drives the input shaft and moves the car. As for stall speed , Greg Ducato, of Phoenix Transmission Products, explained that “a torque converter is like a clutch. Imagine when a clutch is fully release and you get all the power from. The flash stall rating is the only true and most accurate stall rating that you will find on a torque converter. A few rules of thumb to take from this video are: First select a converter that.

Crossover X and H-Style Exhaust Pipes. Automatic Transmission Components. In other words, the power of the engine plays a big part in the stall speed of a converter. The Mountz torque calculator allows you to convert torque measurement from one type of unit measurement to another.

Torque is twisting force that tends to cause rotation.

We measure torque by multiplying two factors—amount of force applied and distance from the point of application. Several conversions relating to torque. The important thing to remember is that “ stall ” speed is a direct relationship between the engine’s ability to produce power and the torque converter ’s ability to hold the RPM back. This converter is approximately 6to 0RPM lower than stock. Most manufacturers categorize torque converters by size and stall speed.

The other info is just to help assure you get the right amount. Once again, the more torque your engine makes, the higher your torque converter will stall. Miller explains, “If you’ve got a power adder like a supercharger, turbo, or nitrous you’ll be making a lot more power, and in turn push your converter ’s stall speed even higher. However, a converter must also be matched to the characteristics of the driven machine and other factors such as stall torque ratio, engine lug, braking and cooling.

Ever wonder what exactly a torque converter is? This video shows what they are and how they work with transmissions. You have a torque converter instead.

How to choose the stall speed of a converter ? You can find all sort of descriptions and explanations, but your first interest is in what your stall does for your car. Theoretically, for maximum acceleration, the stall speed of the torque converter should match the peak torque rpm of the engine. If a high performance engine makes power at a higher rpm, then a higher stall speed torque converter can put more power to the ground quicker. By using different diameter torque converters along with modifying the fin angles on the impeller and turbine, you can change the stall speed (the motor rpm’s needed to get the vehicle moving while in gear and under a load).

WOT causing the tires to spin before the TC reaches its stall speed. Two common ways to measure stall speed are foot-brake stall and flash stall. Performance torque converters are generally grouped by size (diameter) and stall speed. As the diameter of a torque converter decreases, the stall speed (RPM) goes up.

When discussing street-use torque converters , stall speed is typically listed as a range (example: 5to 5rpm). The range listed will tell you what you can expect from the converter. If a 5to 5stall speed is selecte you should be able to hold the brakes (footbrake), and the converter should allow the engine to rev to around. The significance of the torque converter is that it allows the output shaft to be stopped with out stalling the engine, and without physically disconnecting the input and output shafts.

This torque converter is designed for the muscle car and street rod crowd with enough stall to launch the car and efficient enough to drive everyday. It has many of the same design features of our Bullet Race Series torque converters with the ability to drive them on the street. This stall converter is balance has furnace brazed fins, bearing construction and a Sonnax carbon fiber clutch. Rated up to 4horse power.

The stall speeds will be higher than normal due to the bad torque converter because it’ll take longer for the transmission to engage the engine. You can diagnose any torque converter problems by doing a stall speed test but before that, you should clearly know the stall speed specifications of your engine and the torque converter first. Stanley Poff: The stall speed of a torque converter plays an important role in overall vehicle performance.

Understand that stall speed ratings are not absolute. Your engines torque output will determine the actual stall speed. Need some help with torque converter stall speeds. I have a 4with a comp cam has 2duration on intake and exhaust and. I have 3gears but willing to change if needed.

What would be a good stall speed be for street driving and occasionally drag racing? Chevy Spickups with the 4. Part numbers are included in the posts that follow.