Nissan Silvia 2.0 Turbo S15

The S15 is the only Silvia with the 6-speed manual (behind the Spec-R SR20DET), and it has a well-documented internal weakness. The circlip holding 5th gear can migrate under hard use, allowing gears to move on the mainshaft and, in worst cases, engaging two gears simultaneously — which typically destroys the gearbox and can reach into the engine. Aggressive shifting, drifting and missed shifts accelerate the failure. Specialists like GarageD and Quaife offer a preventative fix using an uprated locking kit for €400-€800 fitted; once failed, a full rebuild runs €2,000-€3,000 and a good used gearbox is now €3,000-€4,000. Any Spec-R without documented circlip work is a risk item — factor this into the purchase price.

The SR20DET uses a timing chain, but the plastic guides and hydraulic tensioner wear with age and heat cycles. A brief rattle of 1-3 seconds on cold start is usually the VVT solenoid — a €200-€400 fix. Persistent rattle beyond a few seconds points to chain slap and needs a full kit (chain, guides, tensioner, gaskets) at €700-€1,200 DIY or €1,500-€2,500 at a specialist. Ignoring chain slap eventually leads to chain skip and valve-to-piston contact. JDM cars sometimes have lower mileage than European S14s, but heat cycles and age still matter — verify with a cold-start check every time.

The S15 Spec-R got the upgraded Garrett T28 ball-bearing turbo, more capable than the S14 unit but now 25 years old. Common failures include shaft play, oil seal leaks (blue smoke on startup or under boost), and wastegate actuator wear. Many S15s have been remapped or run higher boost, which shortens turbo life considerably. A reconditioned ball-bearing T28 is €900-€1,400 plus fitting; upgraded hybrid turbos run €1,500-€2,500 all-in. Check for blue smoke on a full-throttle pull and oil residue in the intercooler piping.

The S15 is the poster car of the global drift scene, and a large proportion of surviving examples have been modified, drifted, or crashed and repaired to varying standards. Check panel gaps, paint consistency, weld quality on the chassis legs, and look for mismatched VIN plates, re-stamped chassis numbers or replaced front ends. A genuine Japanese auction sheet (grade 4 or higher, with no 'R' or 'X' accident notation) is the single most useful document you can ask for. Cheap tunes, welded diffs and bargain coilovers are common. An apparently cheap S15 can become a bottomless pit if the body, tune or running gear has been done badly.

Nissan improved rust protection on the S15 and most JDM cars spent their early life in Japan's milder climate, so rust is generally less severe than on S14s. However, once imported and used in European winters — or if previously exported to New Zealand or Australia with road salt exposure — corrosion appears in the usual places: sills, chassis legs, strut towers, rear arches and fuel filler area. Always inspect on a ramp with a torch; welding repairs run €1,000-€2,500 per section, and chassis-leg or strut-tower rust makes a car uneconomic to restore.

Very few S15s still run the original clutch. A worn clutch shows as slip under boost, a high bite point, or judder on take-off. Replacement is €800-€1,200 for an OEM-spec setup at a specialist; uprated twin-plate clutches run €1,500-€2,000. Hard launches, drifting and increased power also wear the driveshafts and viscous LSD — a clunky rear end in tight turns usually means a worn or welded diff. Budget for a driveline refresh if you plan to drive the car enthusiastically.

Spec-R cars came with HICAS, Nissan's electronic four-wheel steering. The system is now widely considered dated and prone to hydraulic leaks, sensor faults and unpredictable behaviour at low speed. Many S15s have had HICAS delete kits fitted (€150-€400 parts) which lock the rear geometry and improve predictability — most enthusiasts consider this an upgrade rather than a downgrade. A permanent warning light on the dash and fluid leaks at the rear subframe are typical symptoms. Verify whether HICAS is intact, deleted, or faulty.

On a car this age the entire cooling system should be treated as a maintenance item. Original aluminium radiators develop internal corrosion, plastic end-tanks crack, hoses harden and the water pump wears. Overheating an SR20DET can crack the head or warp the block — a €2,000+ problem that often ends the engine. Budget for a full coolant refresh (radiator, hoses, thermostat, water pump, cap) at €400-€800 in parts or €800-€1,200 installed at a specialist.