The line was later expanded to include various luxury and upgrade option packages for both the Spec-S and Spec-R. The Spec-S also only featured the viscous limited slip differential. It also lacked the additional chassis support of the Spec-R featured 2-piston front brake caliper and a slightly smaller brake power booster.
NISSAN SILVIA MANUAL
The Spec-S featured only a 5-speed manual transmission (in addition to a 4-speed automatic available on both the Spec-S and the Spec-R). As with many Nissan’s, HICAS (High Capacity Active Steering) four wheel steering was available as an option. The result was a safer, more track/fast-street driven Silvia in some contrast to its drifting heritage. One of the major changes to the S15 model of the Silvia was the implementation of a helical limited slip differential to control rear wheel traction. The S15 featured the same 4-piston front brake calipers that were found in the S14 but included a larger brake booster. The Spec-R also included extensive chassis and suspension strengthening via the use of anti-roll bars and strut bracing. The Spec-R differed from previous Silvia models by featuring a 6-speed manual transmission. The S15 Silvia model lineup was initially simplified to just the Spec-S (non-turbo) and Spec-R (turbo), both models offering an “Aero” variant with a large rear wing and mild ground effects. Also for the first time, instead of a viscous limited slip differential, the S15 offered a more effective helical limited slip unit. The S15 Silvia included aggressive styling inside and out upgrades to the chassis and suspension, including increased use of light alloy suspension components and for the first time, a six-speed manual transmission (in addition to a 5-speed manual transmission and a four-speed automatic). The SR20DE (non-turbo motor) featured only 165 hp (121 kW).
Japan saw a new version of the Silvia (S15) in 1999, now boasting 250 hp (184 kW) from itsSR20DET engine, thanks to a ball bearing turbocharger upgrade, as well as improved engine management.
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