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This is a discussion on new guy within the Camaro / SS forums, part of the Vehicle Specific category; whats a stall do in an automatic transmission?and what eactly is a stall?...

  1. #21
    Member F-my-body's Avatar
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    whats a stall do in an automatic transmission?and what eactly is a stall?

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    Quote Originally Posted by F-my-body View Post
    whats a stall do in an automatic transmission?and what eactly is a stall?
    Its a torque converter, it allows you to rev the car higher off the line and launch much harder. Stock stall is like 1500rpms i think
    Last edited by Zinergy; 12-26-2009 at 11:39 AM.

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    Quote Originally Posted by F-my-body View Post
    whats a stall do in an automatic transmission?and what eactly is a stall?
    Read this to get a basic understanding of a torque converter.
    http://auto.howstuffworks.com/auto-p...converter1.htm

    When you think of a torque converter or stall in an A4, think about how a clutch works in a M6.

    For example, say you want to take off fast in a M6. You would have the clutch disengaged, rev up to a certain RPM (say 3000 or higher) and peddle the clutch out or dump it and go. Therefore you have more power instantaneously as opposed to just flooring it and starting at say 1000rpm.

    Now let's look at an A4.

    In an automatic, a torque converter will do the same thing. It's under these same circumstances that the stall speed becomes important. The torque converter will allow the engine to build RPM without turning the output shaft (the turbine) until the stall speed is reached.

    As the engine rpms come up, it allows less and less slippage until it reaches full lockup at the stall speed - at that point it's like having the clutch all the way out.

    Someone else can probably explain it better if you still don't understand, I would post in the drivetrain/transmission/automatic section.

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