The fifth-generation 4A-GE engine produced from 1995 to 1998 is the final version of the 4A-GE engine and has black cam covers. This engine is fondly known as the "black top", and yet again features an even higher compression ratio (11:1), the air flow sensor is replaced with a MAP sensor, the diameter of the four individual throttle bodies was increased from 42 mm to 45 mm, the exhaust port diameter was increased, the intake cam lift was increased from 7.9 mm to 8.2 mm and the intake ports were significantly improved in shape, contour and also the width at opening at the head was increased. This revision increased the power to 165 PS (163 hp/121 kW) at 7800 rpm with 162 N·m (119 ft·lbf) at 5200 rpm of torque.
So, as u all can c, comparison between this two engine....blacktop is slightly powerfull.....but, silvertop can do more modification...For example when u added supercharger then UNOFFICIALLY become 4AGzE liao...hahahhaa...I got no info bout black top, but im sure blacktop DO serves their user well...can easily see the air flow with MAP sensor....i was surprise with this formulla: (MAP sensor de....)
- (Engine Mass Airflow Rate) ≈ RPM × (Air Density)
- or equivalently
- (Engine Mass Airflow Rate) ≈ RPM × MAP / (absolute temperature)
i wonder how they could cipta such formula....