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Transmission Power
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Thread: Transmission Power

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    Transmission Power

    I am a future Abarth 500 owner and I would like to know how much hp the transmission can hold up to?

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    http://www.fiat500usaforum.com/showt...l=1#post546298

    http://www.fiat500usa.com/2009/09/fi...r-6-speed.html

    revisiting this......
    admin, are those figures on the second link correct for,the C 510? The listed 206 Nm equates to less torque than what the engine is rated at. Should it read 206 ft/lb instead?
    Last edited by streetsurfer; 10-24-2018 at 11:22 PM. Reason: questioning the validity of the printed data

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    Quote Originally Posted by streetsurfer View Post
    http://www.fiat500usaforum.com/showt...l=1#post546298

    http://www.fiat500usa.com/2009/09/fi...r-6-speed.html

    revisiting this......
    admin, are those figures on the second link correct for,the C 510? The listed 206 Nm equates to less torque than what the engine is rated at. Should it read 206 ft/lb instead?
    Those are the correct figures. They are direct from Fiat Powertrain Technology in Italy. I asked the top engineer/guy in charge about the ratings and they gave me the following information I posted. They are basically a calculated rating used essentially when they sell the transmission. You can read more in the Questions for Abarth Engineers thread, but below is the post for convenience.

    Quote Originally Posted by Fiat500USA View Post
    Hi Folks, Finally, here are some answers to some of the most asked questions. I had to work out the logistics to be in the right place at the right time. Thanks for your patience.


    Question: In the Euro Abarth, the TTC has a separate switch while in the NA version there is an ESC/ESC partial/ESC off switch. When is the TTC activated in the NA car? Is it only when ESC OFF or in partial off mode (and what exactly IS partial ESC?)? After the WHEN is TTC activated is answered, does the TTC in the NA car replace the Traction-control when TTC is activated as in the Euro Abarth? If not, which has precedence?

    This is very sophisticated system. Dan Fry, lead Abarth development engineer comes from the ESP department and worked a lot of magic here with the car. I'll have more on this system on the Blog, but here is a (brief) overview

    TTC is activated in "partial OFF" and "Off."
    "partial Off" allows some more spirited driving but still intercedes when something goes wrong.

    TTC is part of the traction control system. Through the use of all the sensors it can recognize if you are driving on a slippery surface or are doing performance driving.

    Traction control limits engine power TTC doesn't. Traction Control is off in "partial off"

    Q: Internal changes to the engine besides the compression ratio? Are the pistons forged? Changes to the camshaft at all? etc.

    The pistons are a lightweight design with low tension piston rings for improved fuel economy. The pistons are made of a high strength silicon aluminium alloy and the piston skirt has a Moly coating. The floating piston pins are held in position by piston mounted circlips. Pistons are cast, which is usual for street driven cars and have the ring lands hard anodized. The regular 500 uses press fit piston pins.

    According to the specifications I have, the static camshaft timing is the same. Of course, MultiAir controls the intake operation a good part of the time and that is tailored to the 1.4 L Turbo engine. Valves also look the same size.


    Q: Are the brake calipers/pad size larger then stock? Or is it just the rotor size?

    Brakes are by Bosch and the rotor is 1 inch larger. Caliper pistons are the same size.

    Q: Is the ride height different from the Euro Abarth 500, the Esseesse, or the Esseesse with the Koni kit? If so, how much, and why?

    US car is 5mmm higher, and many other changes results in a car that rides better and according to someone who owns the European car, is a better car. More info given in the "Bouncy" question below.


    Q: This begs a question Chris. The NA Abarth engine has max 230Nm and the C510 shows 206Nm max input torque. Is the C510 being built for us in Italy stronger? I've never heard of a transmission, stock from the factory, with the input torque already exceeded.

    Here is my understanding on these transmission figures I posted way back. The figures are a guideline used when selling the transmission to third parties.

    As is common in manufacturing a high performance car, the envelop is pushed to achieve higher levels of performance. However, these figures I published two years ago don't really tell the whole story. It is not a clear cut " apply 1 lbs-ft over this amount something is going to break." The figure is a calculated, and includes a test applying the full stated torque over 100,000 miles. With all the testing and abuse we've seen in Europe and in the US, I wouldn't worry about the transmission. You are not going to shear a crown gear by driving the car hard.

    Remember, cars with the ATM trans are running 200 hp, the difference is the auto clutch operation uses controlled engagement and takes the shock out of the gearbox. Probably the biggest factor in all this is how YOU drive your modified car.

    Abuse systems and everything is out the window.

    Q:Top Gear's review of the Abarth said the ride is 'quite bouncy'. Was the USA suspension modified to be less bouncy?

    The US car is not bouncy. The European car spends a good amount of time on its elastomer bump stops. This is possible in Europe, where the roads are generally better. It is not acceptable here in the US, with the roads we have to work with.


    Q:Are the back seats leather in a car equipped with leather seating surfaces?

    This was a tough question to get an answer. The Fiat exec I tormented with my driving actually put in a call and found that, yes, the back seats are leather.
    A personal observation is I wouldn't be surprised that the capacity has been upgraded since I got that info (pre-2009).

    abarth500forum.com fiat124spiderforum.com fiat500lusaforum.com fiat500xforum.com

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    Thank you, sir.

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