The Nissan 180SX was a fastback coupe based on the S13 chassis from the Nissan S platform, and sold only in Japan. It was sold as a sister model to the Nissan Silvia from model year 1989 through 1998. The S13 Silvia was discontinued in 1993, but the 180SX was successful enough to convince Nissan to keep it in the market for the full length of the next generation Silvia's tenure. The 180SX differed from the S13 Silvia in that it featured pop-up headlamps, and a fastback roof with a liftgate. Specifications and equipment were similar, however the naturally-aspirated CA18DE engine was not offered.
The name 180SX was originally in reference to the 1.8 liter displacement CA18DET engine used in the chassis. In 1991, however, the engine was changed to the SR20DET engine. Although the new engine was of siginificantly larger displacement, the 180SX nomenclature remained. A common body modification to the 180SX and its sister car, the North American 240SX fastback, is the Sileighty conversion.
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