ATTESA
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- See also: ATTESA E-TS
ATTESA (acronym for Advanced Total Traction Engineering System for All) is a four-wheel drive used in some automobiles produced by the Japanese automaker Nissan.
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[edit] History
The earliest model of car with Attesa is the 1989 2000SSS Attesa. However there have been reports of an 1987 RNU12 Bluebird (CA18DE) with the Attesa system, as well as a 1988 U12 Bluebird[1].
There is also speculation that it was developed for Nissan's rallying team. Although the Attesa system certainly has the potential to do well in rally motorsport, the Attesa parts are so rare and expensive, and awkward to work on, that it would be very uneconomic to rally with.
[edit] How it works
There are two distinct four-wheel drive systems in use which are both referred to as "ATTESA", one designed for transverse layout vehicles such as the Pulsar GTiR, and the other designed for longitudinal layout vehicles such as the Nissan Skyline GT-R (see ATTESA E-TS).
The ATTESA system featured in the transverse layout vehicles, such as the Pulsar GTiR and the Bluebird Attesa modification, is quite similar to vehicles from other manufacturers. Drive passes from the gearbox to a centre differential, which is then split to a front differential in the transfer case and via a tailshaft to a rear differential.
This more conventional layout provides a 50:50 split between front and rear and utilises a centre viscous limited slip differential to aid grip in slippery conditions. This system is commonly used in Nissan vehicles that are also available as front wheel drive models. This system is a full-time mechanical four-wheel drive.
[edit] ATTESA Models
| Model | Years Produced |
|---|---|
| Nissan Avenir | 1990–1997, 1998–2002 |
| Nissan Bluebird | 1989–1994, 1995–1998 |
| Nissan Prairie | 1989–1990, 1992, 1994 |
| Nissan Pulsar | 1989–1997, 1999 |
| Nissan Sunny | 1989–1990, 1992–1995, 1997–1998, 2000–2002</td> |
[edit] Variations
- ATTESA E-TS (Electronic Torque Split): Used on Nissan Skyline GT-R
- ATTESA E-TS Pro (Electronic Torque Split Pro): Used on Nissan Skyline GT-R V-Spec
