Turbocharged road engines usually make most of their torque and power at lower engine speeds than n/a engines, so there’s really no point setting a high rev limit and thrashing the engine harder.
Why do turbo cars not rev as high?
The easiest answer is, there is no need to rev a turbocharged engine as high because it is generally, already creating more power than its natural aspirated counter part.
Do turbos lower RPM?
Turbocharged engines make big torque at low rpm, but those two numbers, peak torque and its corresponding rpm, don’t tell the full story, as boost pressure isn’t solely a function of engine speed.
Does turbo increase engine RPM?
At a low RPM, the engine produces less exhaust gas. … Another option is to use a turbo that can regulate the speed of the exhaust gas entering the turbine, to ensure it quickly spools up and provides a consistent level of boost across the engine’s RPM range. This is known as a variable geometry turbocharger.
Is it bad to rev a turbo car?
While in theory lower rpm equals to higher fuel efficiency, in turbocharged vehicles, it is not true. … This causes the engine to use more fuel and can damage the turbocharger and exhaust system in the longer run. In smaller engines, lugging can also damage the engine.
What RPM do turbos kick in?
You Spin Me Right Round (Like a Turbo, Baby): The turbine in a typical car turbocharger has to spin incredibly quickly. While your car’s engine revs, at cruise, at around 2,000 rpm, a turbo’s turbine can reach rotational speeds of more than 280,000 rpm.
Why do turbos rev lower?
A turbo’s job is to pressurize air, thus forcing more air into the engine. For most street cars, low-end responsiveness is typically desirable. This means most turbochargers are generally smaller and have lower rotational inertia-this allows them to spin up and produce boost (pressure) more quickly.
Do turbos make boost at idle?
Boost pressure is usually very low at idle no load condition. Turbo is turning at lower speed due to smaller volume of exhaust going thru turbo. Your highest boost will happen at full load on engine and has the most volume going thru the turbo . A lot of engines now use a exhaust bypass to limit max boost pressure.
Do turbos work better cold weather?
As air temperature increases the density of the air, and the amount of oxygen it holds, decreases. This means that the turbocharger has to work harder, spin faster and compress more air to produce the same amount of boost it would at lower temperatures.