Yank converters cheap
What will a higher stall torque converter do for my car? A higher stall torque converter will multiply the torque of your engine to put more power and torque to the tires! The high stall torque converter will "slip" the engine into a higher rpm range where there is more torque and horsepower.
This will make your car haul ass! What kind of performance gains will I see with a high stall torque converter? Our customers typically see a. Highly modified cars with ported heads and bigger cams have seen gains of over 1 second! What is the difference between "brake stall" and "flash stall"? Flash stall is the maximum your engine's torque can stall a torque converter. In essence flash stall and full stall are nearly identical.
If you had a transbrake, you could find full stall by putting your foot to the floor and reading your tach. For argument sake, let's say we're testing a stall Yank ST If you had a transbrake, you would see around rpms. If your motor was at idle and then you suddenly floored the throttle, you might see slightly more maybe rpm more stall for a half second as the momentum of the motor's internals "flashed" the converter a small bit above its true stall rating.
Brake stall, on the other hand is a very subjective thing. For most, it's the highest stall you can achieve before your tires spin. This varies greatly based on many factors: Traction, gearing, brake clamping force, and engine torque. With a ST, I may only be able to get rpm "brake stall" on the street with street tires But if I was at the track with racing slicks on the starting line, I might be able to get brake stall before the motor torque overwhelmed the tires.
Yank rates their converters based on their intended application. A ST will stall rpms in a stock LS1. If you had a and wanted a ST , the converter you received would still stall because it would be built around the torque of a , not a stock displacement LS1. Yank checks the stall of their converters and their competitors by using either a trasmission dyno or a "tranny tricker" in the vehicle tested.
With the tranny tricker, you can place the vehicle in 2nd or 3rd gear and stab the throttle to the floor What will happen to my fuel economy? Very little. If your vehicle originally came with a lock-up clutch, your Yank Performance Converter would also have a lock-up clutch.
You may need to apply slightly more throttle for driving around town, but you should not see a noticeable drop in fuel economy. How can a 12" torque converter and a 9. Two different sized converters can have the same stall speed, but the efficiencies will vary greatly. A converter pump will tend to have a higher efficiency when its blades have a positive angle to them.
The positive angle feeds the most amount of fluid to the turbine. The more fluid you feed the turbine, the harder it pushes on it. The harder the turbine is pushed, the more torque is transferred to the transmission. For a 12" converter that normally stalls at , to be converted to a stall, most converter builders will bend the pump blades back to a negative angle to feed less fluid to the turbine.
This means the pump will have to turn more rpms to force the turbine with the same amount of fluid as before. As you can imagine, the efficiency starts to drop off rapidly as you bend the blades more and more negative. You will lose rwhp. It takes more stall to achieve the same amount of hydraulic force of a larger 12" converter.
Good thing about a 9. So in essence, by bending the blades negative on a 12" converter, you are turning it into a heavy, inefficient, higher stall converter in comparison to a smaller diameter converter. This is the very reason why Yank Converters uses a special pump and stator combination to achieve high efficiency along with high stall in its Stealth line of 12" converters. Will the Yank Converter affect my warranty? That depends on the dealer. All Yank Performance Converters exceed the manufactures specifications for strength and durability.
A dealer should not deny warranty coverage for your converter. If however, you have further concerns, the Stealth Yank Converter is housed in the factory converter case and left the factory color Which converter should I choose for my application? Typically, you want to choose a torque converter with a stall speed rpms below the engine's torque peak. For example, an engine making peak torque at rpms, a converter would give maximum ET.
In choosing your torque converter, understand that there is no one best converter for all situations. A converter that produces very good results at the track may have reduced drivability in town. Key factors are your planned usage, current and future modifications, and drivability. If your primary goal is increased performance at the track, you will want to select from the higher stall converters, rpm and up. For mostly street driving, you will want to select from the converters with a stall of rpm or less.
A higher stall converter will be "looser" than a stock converter. Looseness refers to the fact that the converter slips the engine into a higher rpm. The use of higher rpms helps provide greater torque during full throttle acceleration, but it also causes the engine to use higher rpms at part throttle too. Looseness can be demonstrated by comparing the typical in town rpms used by a stock converter and a performance converter.
The table below demonstrates the range of looseness. The Thruster is nearly as tight as stock, requiring only slightly higher rpms. The SuperYank is looser. Once the converter locks up typically 35 - 40 mph , the rpms will drop off to the exact same rpms as the stock unit. The 9" Thruster Pro is the loosest, but provides tremendous gains at the track. Note that the rpm range used in the above example was for a car with 3.
A car with 2. Looseness is mostly a perception issue. Because the car uses higher rpms, the exhaust note is more pronounced. McGah said he had two choices: submit to a day performance plan that often leads to termination or take a severance package. Rank-and-yank performance evaluations have long been controversial. Proponents say the ranking helps create a standard to evaluate workers and reward top performers. Critics say it pressures managers to target otherwise good employees for removal.
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