TwinTurbo.NET: Nissan 300ZX forum - It's more the torque converter than turbos.
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Subject It's more the torque converter than turbos.
     
Posted by SpdDemon13 (Nagoya, Japan) on June 17, 2003 at 6:36 AM
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In Reply To i think its the turbos posted by frladyZ on June 17, 2003 at 04:39 AM
     
Message The smaller auto turbo size (though not by much) does allow it to spool faster than an MT turbo but that's really the main reason. The auto turbo will also run out of air earlier than the MT units.

It's the torque converter in auto trannies that allow it to build boost of the line. With your foot on the brake and revving it up to about 2500-3000 rpms (on a stock auto TT), you can build positive boost while stationary. The MT trany doesn't have a convertor and therefore isn't able to do this (although you could similarly duplicate it using the brake, clutch, and gas pedal... a very difficult thing to do).

Basically the auto tranny will let you launch harder and during gear changes, the power is continually transmitted to the ground via the converter. The MT doesn't have this feature unless you try to speed shift (though it still isn't the same) but that's putting a fair amount of abuse into the tranny if you don't get it right.

The auto is quicker but the MT just much more fun.

Harry
1992 Z Twin Turbo - Stage "Who gives a sh!t, it's overated anyway."
2002 Subaru Impreza WRX
1993 Honda Prelude VTEC

ICQ # 1553422

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"my girlfried is inside my dashboard....." Posted by: DeLL116 on April 14, 2002 at 04:59 pm


YugoBernie: i mena that in the best way
YugoBernie: my left ball wont fit on it
SpdDemon13: well you need to talk to spee about that
YugoBernie: thats not right
SpdDemon13: lol
SpdDemon13: sig quote... lol
YugoBernie: damn you
SpdDemon13: mwahahahahhahaha

     
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