What cars had the 4AGE?
The 4A-GE engine was first introduced in the 1983 Sprinter Trueno AE86 and the Corolla Levin AE86. The AE86 marked the end of the 4A-GE as a rear wheel drive (RWD or FR) mounted engine.
How many valves are in a Toyota silvertop?
When the 4A-GE’s with the 16V heads couldn’t be improved upon any further, Toyota decided to design a completely new cylinder head, but this time with 20 valves. 5 Valves per cylinder (3 intake valves and 2 exhaust valves). A Toyota 4A-GE 20V Silvertop engine.
Is the 5 valve head on a Toyota 4AG?
Many units have died because of oil starvation. The 5 valve head is Toyota’s bonus to the 4AG after the 4AGZE went away. With the additional valve and independent throttle bodies- the 4AG 20 valve is a unique head design.
What kind of timing does a Toyota 4A use?
Both engines used Toyotas version of Variable cam timing- VVT. Bore and stroke remained as in the original 1st and 2nd Generation 4AGEs (early) big port (TVIS) and (late) small port (non-TVIS).
Is the 20 valve engine a race spec engine?
The magic of 20-valve is apparent on the ability to attain and sustain a high RPM threshold. The addition of variable cam timing allows the engine to surpass both low-end torque and high RPM horsepower figures of the older 4AGEs. This is the closest to race spec engine Toyota has ever produced.
When the 4A-GE’s with the 16V heads couldn’t be improved upon any further, Toyota decided to design a completely new cylinder head, but this time with 20 valves. 5 Valves per cylinder (3 intake valves and 2 exhaust valves). A Toyota 4A-GE 20V Silvertop engine.
Many units have died because of oil starvation. The 5 valve head is Toyota’s bonus to the 4AG after the 4AGZE went away. With the additional valve and independent throttle bodies- the 4AG 20 valve is a unique head design.
What kind of engine does the Toyota 4AGE have?
The 4AGE has been available in a number of forms. This is a brief run down of how to identify what engine your looking at. The first generation 4AGE was 16V and had silver cam covers with Toyota lettering in blue or black text. This was found in the Corolla GT and came in MAP and MAF versions.
When did the 4AGE 20 valve top come out?
In 1991 the 4AGE had 20 valves and this had silver writing in a silver cam cover and is usually called the silver top. In the middle of the nineties an upgraded 20 valve 4AGE was released, this has slightly more power and came with a black cam cover, this is referred to as the black top.