Stall speed torque converter

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. When your torque converter prevents the power transfer from your engine to your transmission, it increases the engine’s RPM stalls. A high stall converter can easily make enough heat to fry a transmission if you hold it on the line long enough at full RPM if the stall speed is above 500RPM or so, so a good tranny cooler is essential when running ANY type of high stall converter. The key word here is engine.

Effective in-vehicle torque converter stall speed is defined as the rpm the engine can reach with the brakes locked and the transmission in gear before the drive wheels turn. While the RPM keeps rising, the torque will decrease. How does this translate to a torque converter with a low stall speed ? That would give you your converter stall speed with your engine, at a specific vacuum.

Perhaps interesting for tuning, but quite irrelevant to use as a characteristic of any converter , or to compare converters. What is torque converter stall speed ? What are flash stall , brake stall and true stall ?

It means that the converter is going to keep the engine speed at a certain speed and will not let the engine go any faster than that. 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.

This converter is approximately 6to 0RPM lower than stock.

Actual stall speed will vary depending on the load that the torque converter is subjected to. Stall means speed and converter. We can take a look at your existing converter or can build you a whole new custom build specifically for your combination.

We are sharing advanced stall speed advice because we believe that the more our customers know about torque converters , the easier it will be to shop for them. Many factors outside of the converter have a direct impact upon the stall speed. 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. 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.

This cam will directly affect the stall in the torque converter by its duration and lobe separation. In this case, we’d expect the 234-degree duration to draw down the stall by 2rpm, and the lobe separation will further weaken the torque at idle, dropping the stall an additional 2rpm. Choosing a Torque Converter.

Most manufacturers categorize torque converters by size and stall speed. Performance Automatic, for example, makes it easy for you to choose a torque converter for your street or race application because, on its website, it explains the differences. Interpreting the stall - speed test result If the RPM reading is lower than the specifications for your particular torque converter and engine, it means the torque converter is failing and needs to be repaired or replaced. Remember, the ratio is still a factor of the engine torque in the relevant range of the torque converter stall speed , i. Flash stall is the actual stall of the torque converter.

Your stall speed MAY vary in your specific application. Converter : From 0to 0rpm stall speed – 1 and 10. Typically used in power-adder applications.

It is important that you select the right torque converter and stall speed for your vehicle make and model. The stock stall is basically a. 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.

A great street strip converter for cars with a hot cam that can’t be tamed by a larger torque converter but still need a streetable stall speed. For example, if an engine makes 1lb-ft of torque at 5rpm and 1lb-ft at 50 which would you rather have? The engine torque will take any rated stall to different levels i. In other words, stall speed is the engine RPM at which the torque converter transfers the power of the engine to the transmission. If choosing a torque converter for use in a street car, you might want to select a torque converter with a stall speed that is below the engine RPM at mph, since this is where your engine will spend a lot of its time. Get proven performance and reliability from BM, TCI, Turbo Action, Hughes Performance, ATI Performance Products, Performance Automatic, and other leading brands.

Don’t stall —launch your performance to the next level with top-quality torque converters ! I just finished rebuilding a lot of the drive train. C3ModelHard-working engines—like those used for mining, forestry, construction or material handling—need torque converters designed to match their high stall speed transmissions. That’s why it pays to run a Spicer torque converter.

I am looking at aftermarket converters and would like some input on stall speed. Even without a highly modified engine, these converters will give you better acceleration through a higher stall speed , allowing the engine to develop more torque at the time of initial acceleration. I be looking to run in a stock 260HP 3with headers, hei. For example, a converter with a 800-2rpm rating might provide approximately 8rpm of stall speed behind a mild small block V but about 0rpm behind a big block making 8ft. When the engine can no longer increase its RPM, then the RPM will stall.

Torque converters are classified by stall speed and diameter size. Mad Dog Lou from Mad Dog Transmissions explains how to choose the correct stall speed for your transmission! This stall converter is balance has furnace brazed fins, bearing construction and a Sonnax carbon fiber clutch. Rated up to 4horse power.

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.