What is the compression ratio for 93 octane?
9.5:1
What is the best compression ratio for a turbo engine?
How much compression does a turbo add?
Turbos typically add about 10 to 15 psi boost which is about 1 atmosphere pressure (1 atmosphere is 14.5 psi), so air enters the cylinders at a maximum pressure of about 2 atmospheres instead of 1 atmosphere. This effect is like adding 70% to the compression ratio.
Is high compression good for boost?
Of course, lower compression motors will be able to run more boost, and higher compression motors should run less boost, everything else being equal. Compression ratios of 10:1 and higher require lower boost levels, higher octane fuel, intercooling, or some combination of the above.
Why is lower compression better for boost?
Well, that means we can force more air and fuel in the cylinder to start, then end up with the same total cylinder pressure when compressed. It’s the additional air and fuel that allows a lower compression with higher boost engine to make more power.
What is considered high boost?
“high boost” is more in the limitations of the motor and the turbocharger than it is in “the tune”. and it varies depending on how built your engine it, what its compressions is… also on the size of your turbocharger… 21psi on a stock twin is considered really high boost….
What happens with too much boost?
Increasing boost (within reason) will force more air into the engine, so more fuel can be added to increase the power. So in general, if you add more boost and have an engine tuned to suit will give you more power. Too much boost can cause turbo or engine failure.
How many lbs of boost is safe?
If you have a stock engine, with a compressor that is factory set to produce no more than twenty pounds of boost, you shouldn’t modify the system to make it produce much more than 25 pounds of boost. And increase of 5 pounds over stock is probably the limit you should go by.
Is 20 psi a lot of boost?
20 psi is fine. its the boost spikes that hurt. you can max out a k03 on stock internals no problem, but controlling the spike is difficult because the turbo is a pea shooter. and yes it will diminish the life of the turbo, depending on how you drive it.
Is 22psi of boost alot?
Even with the over boost feature, the car should only be hitting around 17-18psi. 22psi sounds a lot like a tune has been applied. you DEFINITELY shouldn’t be hitting 22psi on stock tune. it should hover a little past 15 when you’re in sport mode for a couple seconds then go back to 15.
How much HP will 5 psi add?
Yeah it is around 100 hp per 10 pounds of boost on a well built motor.
How much horsepower can a turbocharger add?
A turbocharger works with the exhaust system and can potentially give you gains of 70-150 horsepower. A supercharger is connected directly to the engine intake and could provide an extra 50-100 horsepower.
How much HP does 1psi of boost add?
For every 14 psi of boost, you double the horsepower (from a naturally aspirated engine).