1szfe Engine Manual Top [repack] File

The Ultimate Guide to the Toyota 1SZ-FE Engine: Specs, Maintenance, and Repair Manuals

Timing chain stretch or guide wear

3. Valves & Valve Springs

Intake Valve

• Head Diameter: 28.5 mm
• Stem Diameter: 4.97 – 4.99 mm (standard)
• Stem to Guide Clearance: 0.025 – 0.060 mm
• Service Limit (stem to guide): 0.08 mm

Timing and cam removal

• Intake: New shim = Old shim + (Measured – Desired)
• Exhaust: New shim = Old shim + (Measured – Desired)

• Displacement: 997 cc (1.0L)
• Configuration: Inline-4, DOHC, 16 Valve
• Bore & Stroke: 69.0 mm × 66.7 mm (Undersquare design for torque)
• Compression Ratio: 10.0:1
• Max Power: Approx. 68–70 hp at 6,000 rpm
• Max Torque: Approx. 66 lb-ft at 4,000 rpm
• Fuel System: MPFI (Multi-Point Fuel Injection)