Nissan's 4 cylinder, 1.8 litre, DOHC, EFI, Turbo engine used in cars such as pulsars and Silvias. These motors are best paired to automatic gearboxes as it is the only way you can take advantage of the mad shift points they have.
"Well I decided to convert the S13 to manual"
"Keep it auto man. CA18DET autos are heaps quick and have wicked shift points.