Intelligent Variable Timing (and lift) Electronically Controlled (iVTEC), is a system that combines VTEC and VTC into one unit. The VTEC part of the system allows valve overlap to be adjusted at any moment, resulting in much greater efficiency and slightly better performance. …
In respect to this, At what RPM does VTEC kick in?
It depends on the engine. Most Hondas had vtec crossover in the low to mid 5000rpm range. You had 2 camshaft profiles, 1 optimized for low-mid rpm driveability and fuel economy and another for mid-high rpm power.
Furthermore, Is DOHC better than VTEC?
Just wondering what are the main differences between DOHC vtec and SOHC i-vtec. Essentially speaking the biggest difference is the number of camshafts the engines have. DOHC engines are designed to rev higher, have peakier power outputs and PERHAPS high horsepower application.
Additionally, Does VTEC make a car faster?
Honda developed its Variable Valve Timing & Lift Electronic Control (VTEC) technology to make its cars quicker, more efficient, and more enjoyable to drive overall.
Is VTEC like a turbo? Unlike VTEC, a turbocharger doesn’t suddenly “kick in” at an exact RPM – it provides varying amounts of boost over a wide RPM range. VTEC is a “digital” device. It is either on or off resulting in a sudden transition and change in engine performance and sound at the engagement point.
18 Related Questions Answers Found
Why does Honda still use SOHC?
The biggest reason to use them is because DOHC engines are more expensive to produce (which price would get pushed back onto the consumer), there are more moving parts in them (which means they will fail sooner), and they can still do VTEC in either version.
Which is faster DOHC or SOHC?
To sum it up, a 4 Valve per cylinder SOHC engine with a lighter valvetrain mass would have better performance characteristics at the lower end of the powerband. However, at higher engine speeds, a DOHC setup with its higher valvetrain mass and as many valves per cylinder will develop higher peak torque and horsepower.
Is SOHC a VTEC?
SOHC VTEC is a power implementation of VTEC for SOHC engines with the express intention of extracting high specific output. … SOHC VTEC engines are high specific output forms of the standard SOHC engines. The D15B engine used in the Civic/Civic Ferio VTi models (EG-series 1991 to 1995) gives 130ps from a 1493cc capacity.
Does VTEC add horsepower?
VTEC is a type of variable valve-timing system developed and used by Honda. … At higher engine speeds, the cam profile allows greater valve lift, which allows more air into the cylinder. This helps generate more horsepower.
How much HP does VTEC give?
Its four-cylinder B16A produced 160 horsepower from just 1.6 liters—100 horsepower per liter—an unheard-of power density for automotive engines.
Why are Hondas so fast?
Yes, Honda Civics are fast cars due to their excellent power-to-weight ratio, impressive drivetrain gearing, and shift points. What’s more, the Honda Civic can be made to go even faster than its stock form by spending very little money on customization and upgrades.
Can you hit VTEC in reverse?
In a straight line, ‘hitting VTEC’ often results in noticeably more power and a satisfying sound as the cam profiles shift. … The clip below answers that age-old question and to our surprise, yes, you can hit VTEC in reverse, not that doing so serves any real purpose.
Is it better to have more torque or horsepower?
Torque, simply, is the ability of a vehicle to perform work — specifically, the twisting force applied by the crankshaft. Horsepower is how rapidly the vehicle can perform that work. … Because there is generally a limit on how fast you can spin an engine, having higher torque allows for greater horsepower at lower rpms.
Does turbo shorten engine life?
2. Turbos Reduce the Lifespan of an Engine. One of the most common turbo myths is that running boost will damage your engine over time. … However, a properly implemented turbo pushing enough PSI through a motor to produce respectable levels of power won’t strain a motor any more than idling in traffic will.
Is VTEC good for Turbo?
The norm for turbo engines used to be “high power, low fuel economy.” Honda’ s VTEC TURBO is a new era engine that is both fuel efficient, and provides an enjoyable ride. … In addition, the 1.5L VTEC TURBO is designed to perform well even on regular gasoline, so even more customers can enjoy its benefits.
Are SOHC engines good?
SOHC is more fuel-efficient since its power consumption is low. The spark plugs are not located at the center of the cylinder. They are not strategically located, thus hindering the performance of the SOHC engine. SOHC has a better low-end torque.
What cars have DOHC engine?
Most DOHC engines have four valves per cylinder, however DOHC engines with two valves per cylinder include the Alfa Romeo Twin Cam engine, the Jaguar XK6 engine, the early Ford I4 DOHC engine and the Lotus Ford Twin Cam engine. The camshaft usually operates the valves directly via a bucket tappet.
What does DOHC Turbo mean?
Dual overhead cam engines are found in most modern vehicles today. They allow better airflow with less obstruction and are generally much more efficient engines than OHV or SOHC engines. Two camshafts operate 4 valves per cylinder, one separate camshaft for intake and exhaust valves.
What VTEC stands for?
The VTEC (Variable Valve Timing & Lift Electronic Control) system uses separate camshaft profiles for low and high-end performance, and the engine computer selects between profiles. … The VTEC system essentially combines low-RPM fuel efficiency and stability with high-RPM performance.
What does FI SOHC mean?
SOHC. Single overhead cam or overhead cam engines have a single camshaft installed in the cylinder head. The valves are operated directly by the camshaft and it is much easier to maintain precise timing at higher RPM and 3 or 4 valves per cylinder.
Which is better SOHC and DOHC?
SOHC & DOHC FAQ
DOHC is better for performance because you will get more horsepower with it. SOHC is better for reliability. A SOHC engine contains much lesser parts, which will make it more reliable.
Can you turbo VTEC?
VTEC TURBO Fuel Efficient Under Any Condition
The VTEC TURBO engine produces more torque than the 2.4L naturally-aspirated engine, thanks to its turbo. The VTEC TURBO allows a small, 1.5L engine to perform as well as a 2.4L engine.
Is VTEC only for Honda?
So yes, VTEC is Honda only and yes, there are other technologies that achieve the same, or very similar, goals.
Don’t forget to share this post !
