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Old 10-26-2009, 06:22 PM   #153 (permalink)
orange4boy
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Quote:
Have you been watching the transmission temperature? Thats the only thing I'd be worried about in doing something like this. I haven't seen it mentioned, but I thought that was the reason most transmissions dont always have the torque converter locked, in high load settings it causes a ton of heat.
Exactly the opposite is true. The TCC lockup reduces heat build up in an auto transmission. Most of the heat generated is from fluid friction in the TC. Lock it up and the TC is disabled, eliminating all that fluid friction.

The TCC unlocks under high load situations to give you more torque from the torque multiplication action of the TC. If you have enough torque with the TCC locked at a given load it is far more efficient to be locked up than not. Just like a manual trans, if you don't have enough torque, downshift. Problem solved.

The TCC lockup really just turns your auto into an auto shifting manual transmission without a foot operated clutch.
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