PLS CAN SOMEONE ENLIGHTEN THE HOUSE ON THE DIFFERENCE BETWEEN THESE TWO TYPES OF ENGINES
(2.0 Ltrs L4 SFI DOHC and 2.4 Ltrs L4 FI DOHC ENGINES) IN TERMS OF DURABILITY AND PERFORMANCE. GENERALLY THE DIFFERENCE ANYWAY

Besides the 400cc difference between both motors. . .

You don't say what Toyota model they're from, or even the approx. year of manufacture, so can't advice on cylinder configuration. I'm guessing the 2,0L one is an SPI - single-point injection, while the larger 2,4 one's a MPI - multi-point injection.

Can't comment on anything else without knowing what cars they're fitted to.

I think its the 1990 and 2002 models

@ Sienna
The 2.0 Ltrs L4 SFI DOHC Engine is for a 2002 Rav 4 while the 2.4 Ltrs L4 FI DOHC ENGINES is for a 2002 Camry. Pls can you still shed more light on V V T I I've been seeing it on most toyota cars

VVT-i ( Variable Valve Timing with intelligence) its an automobile variable valve timing technology. it basically varies the timing of the intake valves by adjusting the relationship between the camshaft drive (belt, scissor-gear or chain) and intake camshaft. Engine oil pressure is applied to an actuator to adjust the camshaft position. Adjustments in the overlap time between the exhaust valve closing and intake valve opening (This increases the time for the fuel/air mixture to enter the cylinder during the intake stroke). resulting in an improved engine efficiency,
The advantages are lower fuel consumption, lower exhaust emissions and higher power output.

Further More,
When the piston moves from top to bottom, it sucks in a certain amount of air. How much air it can suck in depends on how big around the piston is, and how far it moves when it goes from top to bottom.

Let's say that the piston in your car is 4 inches (10.16 centimeters) in diameter (also known as the bore), and it moves 4 inches from top to bottom (also known as the stroke). That means that one piston in your engine can suck in:


radius ^ 2 * pi * height = volume of a cylinder
5.08 cm (bore/2) ^ 2 * 3.14 * 10.16 cm (stroke) = 823.3 cubic centimeters

If your car has 4 cylinders, then it has a has a total displacement of:


4 * 823.3 cubic centimeters = 3,292.1 cubic centimeters, or 3.292 liters

A car manufacturer would round that up and say that your car has a 3.3-liter engine. This means that the displacement of this particular engine is 3.3 liters. If you were to turn the crankshaft of this engine through two complete revolutions, the four pistons would inhale a total of 3.3 liters of air.

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