Blacktop

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The name 'Blacktop' is given to the 5th generation 4A-GE engines.

 

The 'Blacktop' 4A-GE are a further development of the 'Silvertop' 4A-GE motor. The Silvertop was the first 4A-GE with 5 valves per cylinder. But Toyota felt that they could do more with that engine, so they took another look at it, what resulted in the Blacktop 4A-GE 20V.

 

 

As you can see in the picture above, the Blacktop gets its name from its black valvecovers with the black plate in between, so the entire top of the engine is black.

 

The main differences with the Silvertop 20V engines are: The blacktop is MAP controlled, has lighter internals and bigger intakes. The Blacktop aslo has a more advanced VVT system. Both 20V engines have ITB's.

The Blacktop was mainly installed in the Japanese AE111 Corolla FX

(The E11 is produced from 1997 until 2001).

 

Here are the specifications for the 4A-GE 20V Blacktop engine:

 

Enginecode                              : 4A-GE

Fuel                                                : Petrol

Power output                          : 165pk @ 7800rpm

Torque                                         : 162Nm @ 5200rpm

Number of cylinders         : 4 Cylinders

Displacment                            : 1587cc

Throttle diameter                : Engine has ITB's, diameter 45mm

Number of valves                 : 20 valves (5 per cylinder. 3 intake, 2 exhaust)

Valve operation                     : DOHC with VVT

Camshaft drive                      : Belt driven

Camshaft duration             : 250° intake and exhaust

Camshaft lift                            : 8,2mm intake and 7,6mm exhaust

Valve angle                               : -35°

Diameter intake valve      : 26,5mm

Diameter exhaust valve  : 26mm

Material cylinderhead    : Aluminium

Bore x stroke                            : 81,0 x 77,0 mm

Compression                           : 11 : 1

Diameter pistonpins          : 20mm

Fuel system                               : Fuel injection (L- Jetronic)

Ignition                                        : Elektronic ignition (ESA/TCCS)

Intake system                           : MAP controlled

Material Cylinderbock     : Castiron

Cylinderblock                         : 7- Rib Cylinderblock with 42mm crankshaft bigends

Injector capacity                  : 295cc/min (2 Ohm impedance, sidefeed)

Fuelpump pressure            : 75 psi

Fuelrail pressure                  : 35 to 38 psi

Engine dryweight                 : +/- 123 to 126kg