What is the compression ratio of a Toyota 86?
The compression ratio of the Toyota 86 sports car is 12.5:1. This high compression ratio, along with the car's naturally aspirated boxer engine, contributes to its impressive performance and efficiency.
Understanding Compression Ratio
The compression ratio of an internal combustion engine is the ratio of the volume of the cylinder when the piston is at the bottom of its stroke (known as the "swept volume") to the volume when the piston is at the top of its stroke (known as the "clearance volume"). A higher compression ratio generally indicates a more efficient engine, as it allows for greater power output and better fuel economy.
The Toyota 86's Compression Ratio
The Toyota 86, also known as the Subaru BRZ, has a compression ratio of 12.5:1. This is considered a high compression ratio for a naturally aspirated engine, as most modern engines have compression ratios in the range of 9:1 to 11:1.
The high compression ratio of the Toyota 86 is achieved through a combination of factors, including the engine's design, the use of direct fuel injection, and the car's lightweight construction. This high compression ratio, along with the engine's naturally aspirated design, allows the Toyota 86 to produce a respectable 205 horsepower and 156 lb-ft of torque from its 2.0-liter boxer-four engine.
Benefits of High Compression Ratio
The high compression ratio of the Toyota 86 offers several benefits, including:
- Improved Efficiency: The higher compression ratio allows the engine to extract more energy from the fuel, resulting in better fuel economy and lower emissions.
- Increased Power: The higher compression ratio enables the engine to produce more power, contributing to the Toyota 86's responsive and engaging driving dynamicsli>
- Enhanced Throttle Response: The high compression ratio, combined with the car's lightweight design, gives the Toyota 86 a more immediate and direct throttle response, providing a more engaging driving experience.
Overall, the Toyota 86's high compression ratio of 12.5:1 is a key factor in the car's impressive performance and efficiency, making it a popular choice among enthusiasts who value a pure, engaging driving experience.
What psi is 10 to 1 compression?
about 150 to 200 psi
A rough estimate of cylinder pressure is 15 to 20 times the compression ratio. So 10:1 should produce about 150 to 200 psi.
What is the compression ratio of the Toyota GR86?
The direct-injection system provides a cooling effect in the cylinders, which allows the engine to use a very high 12.5:1 compression ratio for maximum power.
What is the compression ratio of the D16?
The non-VTEC SOHC D16 W1 provides 103 hp at 6,200 rpm and 100 lb/ft torque at 3,400 rpm with a 9.6:1 compression ratio.
Is 11.5 to 1 high compression?
The CRs include 9.5:1 (dished for less compression for turbo applications), 11.5:1 (std compression), and 12.5:1 (high compression).
What is the compression ratio of the 86 Mustang GT?
*Relative Dyno Information* - Temperature: 82 degrees - Humidity: 38% - Year: 1986 - Mileage: ~67k Miles - H.O. 5.0L - Flywheel Rating: 200 HP / 265 TQ - E7 Heads (~9.5. 1 compression ratio) - '87 Upper Intake - By-passed Smog Pump (Dyno use only.)
What is a 3 stage VTEC?
A three-stage allows the engine to run in "economy", "standard", and "high power" modes, while a VTEC only gives "standard" and "high power", and a VTEC-E only gives "economy" and "standard".
What compression ratio requires 93?
The values in the chart are conservative. With good cylinder head design that promotes high swirl and fast flame front propagation, a slightly higher compression ratio is possible. However, the practical limit for 93 octane pump gasoline is about 10.5:1.
What is the engine compression of a GT86?
With its front-engine, rear-wheel-drive layout, its engine runs on 98 RON (premium unleaded) fuel and features a compression ratio of 12.5:1 with a bore and stroke of 86 mm (3.39 in) for a total displacement of 2.0 L; 121.9 cu in (1,998 cc) that results in 200 PS (197 bhp; 147 kW) at 7,000 rpm and 151 lb⋅ft (205 N⋅m) ...
What is a good engine compression ratio?
In petrol (gasoline) engines used in passenger cars for the past 20 years, compression ratios have typically been between 8:1 and 12:1.
What is the compression ratio of a 3.5 L v6 Toyota engine?
The 8GR-FXS is a 3.5 L (3,456 cc) version. Bore and stroke is 94 mm × 83 mm (3.70 in × 3.27 in) with a compression ratio of 13.0:1.
