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Series I AT-Specific Performance Mods Discuss engine and transmission modifications for your AT equipped RX-8

Lightened Flywheel

Old May 18, 2005 | 07:52 PM
  #1  
09Factor's Avatar
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Original Turbo 'd Auto !!
 
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From: Surprise, Arizona
Lightened Flywheel

What are the pros and cons of lightening the a/t's flywheel be?

I know taking some of the weight out would provide a quicked throtle response, but taking to much weight out would cause slow speed and idle roughness.

Any other info someone can add to this? What am I missing?
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Old May 18, 2005 | 08:03 PM
  #2  
expo1's Avatar
He's as bad as Can
 
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From: Manchester, NJ
Cars with A/T do not have Flywheels, they have torque converters. Don't expect to find a aftermarket torque converter for the low power version you have. It not cost effective since Mazda will add a better A/T in the future.

http://auto.howstuffworks.com/torque-converter.htm
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Old May 18, 2005 | 10:01 PM
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09Factor's Avatar
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Original Turbo 'd Auto !!
 
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From: Surprise, Arizona
Now since the A/T apparently dosen't have a flywheel, what does the starter spin to start the car then? The Torque converter? I don't think so.
Mazda calls it a drive plate part # 19-021. I applogise if I confused you by calling at a flywheel.

BTW
look at this
http://auto.howstuffworks.com/torque-converter2.htm

Last edited by 09Factor; May 18, 2005 at 10:05 PM.
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Old May 18, 2005 | 10:22 PM
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it has a flywheel.. it's just not the same kind of flywheel as in an MT.
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Old May 19, 2005 | 01:59 AM
  #5  
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I always called them the ring gear. They are very flimsy light pieces anyways. Just enough mass that the starter has something to grab onto.
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Old May 19, 2005 | 09:49 AM
  #6  
09Factor's Avatar
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Original Turbo 'd Auto !!
 
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From: Surprise, Arizona
Well there goes that idea. I knew it wasn't the same as a MT. just throwing the idea out there.

Thanks everyone..
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Old Jun 7, 2005 | 10:30 PM
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To better clarify: A/T cars have "flexplates" that have the ring gear that RG mentioned along with the mounting points where the torque converter is bolted on them. The flexplate connects the E-shaft to the T/C and a second purpose of the flexplate is to accomodate any slight mounting misalignments or imperfections that may have occurred during assembly/mating of the engine and transmission. These imperfections are normal. The diameter of the ring gears in the A/T and M/T models are exactly the same. The flexplate is also light enough that it would be a waste to try and lighten it even further.

CRH
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Old Jun 8, 2005 | 11:44 AM
  #8  
spr grn8's Avatar
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From: San Diego
Excellent input Charles! thanks for the simple and specific facts about how my car's
engine and tranny connect. I have always wondered how my A/T was similar and different than the M/T. Save this Thread!
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