Why do we deactivate half the cylinders in a small block engine?
“Rather than adding turbochargers or multi-valve cylinder heads to increase the power of smaller engines, we chose to keep the proven capability of our larger V-8 truck engines, and save fuel by switching off half of the cylinders when they aren’t needed,” says Jordan Lee, GM global chief engineer for small block engines.
How long does a Chevy 4.3L Vortec engine last?
3 vortec is a very strong and reliable motor, proven by it being the longest lasting production vortec engine. Generally, these engines are extremely capable of lasting up to 300,000 miles.
What causes engine knock on a 4.3L Vortec?
Engine knock can be caused by a ton of factors, such as low-grade fuel, bad spark plugs, carbon build-up, etc. Engine knock is terrible for your engines internals and can cause serious damage to the pistons and to the cylinder walls. On the 4.3L vortec, the cause of the engine knock has not necessarily been figured out, still to this day.
What causes a master cylinder in a car to fail?
A master cylinder may fail in two ways: internally or externally. If the brake fluid reservoir is full and there are no signs of leaks, the problem is usually an internal problem that you can’t identify just by looking at the master cylinder.
What happens when you deactivate the 4 cylinder engine?
Valve lifters and their related pushrods moved up and down within the engine as usual, but those unneeded valve pairs remained idle. While running on 4 cylinders, displacement reverted to all 8 as soon as the driver stepped on the gas pedal to pass or merge.
3 vortec is a very strong and reliable motor, proven by it being the longest lasting production vortec engine. Generally, these engines are extremely capable of lasting up to 300,000 miles.
Engine knock can be caused by a ton of factors, such as low-grade fuel, bad spark plugs, carbon build-up, etc. Engine knock is terrible for your engines internals and can cause serious damage to the pistons and to the cylinder walls. On the 4.3L vortec, the cause of the engine knock has not necessarily been figured out, still to this day.
What kind of cylinder deactivation does GM use?
More than two decades after the V8-6-4 debacle, GM was back with a far more sophisticated and dependable form of cylinder deactivation.