2002 NISSAN SILVIA

Typical onset: 80,000-120,000 mi

Symptoms: Blue smoke on deceleration, Wastegate rattle at idle, Loss of boost pressure above 4,000 RPM, Shaft play detectable by hand

Fix: OEM T28 turbos typically fail from oil starvation or age-related seal degradation. Replacement requires 6-8 hours labor including manifold removal, new oil feed/return lines, and coolant line refresh. Most owners upgrade to aftermarket at this point.

Estimated cost: $1,200-2,800

Typical onset: 90,000-140,000 mi

Symptoms: Grinding into 2nd gear when cold, Difficult 2nd-to-3rd shifts under load, Crunching downshifts into 3rd, Requires double-clutching to engage smoothly

Fix: Factory 6-speed synchros wear from aggressive shifting and clutch dumps. Full rebuild requires transmission removal (8-10 hours), synchro ring replacement, and bearing inspection. Many techs recommend clutch replacement simultaneously since transmission is out.

Estimated cost: $2,200-3,800

Typical onset: 100,000-150,000 mi

Symptoms: Rattling from timing cover on cold start (first 3-5 seconds), Metallic ticking that disappears after warm-up, Check engine light with cam/crank correlation codes, Rough idle with timing scatter

Fix: SR20DET upper timing chain guides crack and tensioners lose pressure. Requires front-engine teardown including valve cover, timing cover, and water pump access (10-12 hours). Replace full timing kit including guides, tensioners, chains, and water pump while in there. Catastrophic failure leads to valve contact.

Estimated cost: $1,800-3,200

Typical onset: 70,000+ mi

Symptoms: Persistent ticking at all RPM ranges, Louder when cold, quieter when hot, Does not change with engine load, Oil pressure normal on gauge

Fix: Hydraulic lifters wear or collect varnish from oil contamination or extended drain intervals. Individual lifter replacement requires cam removal (6-8 hours), but many techs do all 16 lifters plus cam lobe inspection. Some noise is characteristic of high-mileage SR20s and not always worth chasing.

Estimated cost: $800-1,600

Typical onset: not mileage-driven

Symptoms: Transmission fluid pooling under bellhousing area, Burnt smell after spirited driving, Low fluid level on dipstick, Hard shifting when hot

Fix: Factory hard lines corrode at fittings and flex sections crack from heat cycles. Cooler line replacement takes 3-4 hours including routing new lines and fluid refill. Often discovered during transmission service or mount replacement.

Estimated cost: $400-700

Typical onset: not mileage-driven

Symptoms: Coolant consumption without external leaks, White smoke from exhaust, Overheating under boost, Milky oil on dipstick or cap, Combustion gases in coolant system

Fix: SR20DET heads crack between cylinders 2-3 when overheated or detonation occurs. Head removal and resurfacing is 14-18 hours labor, includes valve job, new head gasket, ARP studs recommended, timing components, and coolant system refresh. Catastrophic if ignored.

Estimated cost: $3,500-5,500

Typical onset: not mileage-driven

Symptoms: Varies widely: detonation, rod knock, blown head gaskets, Engine management issues with aftermarket ECUs, Tuning-related driveability problems

Fix: Most Silvias have been modified (boost controllers, exhausts, intakes, ECU tunes). Poor tuning or mismatched parts cause premature failure. Full engine rebuilds run 30-50 hours labor depending on machine work needed. Pre-purchase compression and leakdown tests are mandatory.

Estimated cost: $4,500-9,000