The Toyota 4AGE 20v Silvertop is a high-performance engine known for its dual overhead camshafts (DOHC) and 20 valves per cylinder. It’s a sought-after engine for enthusiasts, particularly in the AE101 and AE111 Toyota Corolla Levin/Trueno models. The “Silvertop” designation refers to the silver valve cover, distinguishing it from the later “Blacktop” version.
Here’s a more detailed look:
- DOHC 20-valve: This design, with two camshafts operating four valves per cylinder, allows for improved engine breathing and higher engine speeds.
- 1.6 Liter Displacement: The 4AGE engine has a displacement of 1587cc (1.6 liters).
- Silvertop: This refers to the silver-colored valve cover, a visual identifier for this engine variant.
- Individual Throttle Bodies (ITBs): Many Silvertop engines, especially those from Japan, feature individual throttle bodies for each cylinder, enhancing throttle response and performance.
- High-Revving Nature: The 4AGE 20v Silvertop is known for its ability to rev freely to high engine speeds, making it a popular choice for performance applications.
- Power Output: The Silvertop engine typically produces around 160 horsepower.
- Toyota Corolla Levin/Trueno (AE101/AE111): The Silvertop engine was a factory option in these Japanese market cars.
- Other Toyota Models: It has also been used in other Toyota models and has been swapped into various other vehicles by enthusiasts.
- Formula Toyota: A specially tuned version of the Silvertop was used in Formula Toyota racing.
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Cams:
Upgraded camshafts (like the ones from Kelford Cams) can improve performance, especially in the mid to high RPM range.
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ECU Tuning:
Standalone ECU systems allow for more precise tuning of the engine’s fuel and ignition maps.
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Intake and Exhaust:
Upgrades to the intake and exhaust systems can further enhance airflow and power.
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Turbocharging:
While typically naturally aspirated, the 4AGE 20v Silvertop can be turbocharged for increased power.
The Toyota 4AGE 20v Silver or “Silvertop” is a 1.6-liter inline-4 engine known for its 20 valves (5 per cylinder) and high-revving nature. It produces around 160 horsepower at 7,400 RPM and 119 lb-ft of torque at 5,200 RPM. It features individual throttle bodies and a dual overhead cam design.
- Engine Type: 1.6L Inline-4, DOHC (Dual Overhead Cam)
- Displacement: 1.6 liters (1,587 cc)
- Power: Approximately 160 hp (120 kW) at 7,400 RPM
- Torque: Approximately 119 lb-ft (162 Nm) at 5,200 RPM
- Redline: 7,600 RPM
- Bore x Stroke: 81 mm x 77 mm (3.19 in x 3.03 in)
- Compression Ratio: 10.5:1
- Valves: 20 valves (5 per cylinder)
- Fuel Delivery: MPFI (Multi-Point Fuel Injection)
- Intake: Individual throttle bodies (quad throttle)
- Weight: 154 kg (340 lb) with T50 gearbox
- Cylinder Head: Notable for its straight intake ports
- Camshafts: Features individual cams for intake and exhaust valves for better control
- Ignition: Can use various COP (Coil on Plug) setups, including 2-wire, 3-wire, or 4-wire types
- Variations: While the “Silvertop” is a common term, the engine also had a “Blacktop” version with minor differences, including a wider timing belt.
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 and 20 valves per cylinder. It’s a sought-after engine for enthusiasts, particularly in the AE101 and AE111 Toyota Corolla Levin/Trueno models. The “Silvertop” designation refers to the silver valve cover, distinguishing it from the later “Blacktop” version. Here’s a more detailed […]){kind=link}
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