Throttle Body Size of the Subaru BRZ
The stock throttle body size of the Subaru BRZ is 64mm. However, there are aftermarket options available that offer larger sizes, such as 72mm and 90mm. These larger throttle bodies are designed to provide a significant increase in airflow over the stock 64mm throttle body, resulting in improved performance and throttle response.
The aftermarket options include the Grams Performance 72mm Drive-By-Wire (DBW) Throttle Body, which offers a 50% increase in airflow over the stock 64mm throttle body. Additionally, there are also options like the Cusco Big Bore Throttle Body, which is 2mm larger than the factory throttle body, and the Toda Racing 3mm Large Bore Throttle Body, which features a diameter of 68mm up from 65mm for the valve diameter and a tapered entrance starting at a diameter of 72mm at maximum size .
It’s important to note that these aftermarket throttle bodies are designed as direct OEM replacements and do not require swapping electric motors, wiring, or mounting adapters. However, due to the larger size of the throttle body, the factory intake tube may require some adjustments for proper fitment.
In summary, while the stock throttle body size of the Subaru BRZ is 64mm, there are aftermarket options available that offer larger sizes, such as 72mm and 90mm, for those seeking increased airflow and improved performance.
Contents
- How do I know my throttle body size?
- How much HP does a 70mm throttle body add?
- Does the BRZ have a throttle cable?
- Does Subaru have a throttle body?
- Are bigger throttle bodies better?
- Does a bigger throttle body increase HP?
- What is the diameter of the BRZ overpipe?
- What size throttle body is a GT86?
- Is a bigger or smaller throttle body better?
- What is the diameter of the throttle body of the fa20?
How do I know my throttle body size?
I’ve always used the calculation formula: Engine displacement/number of cylinders x rev limit.. (For the calculation above the constants Being the 0.8 is based on VE avarage at peak for most N/A engines, and the 0.5 being of VE avarage at idle.) So 44mm throttle body be about your ball park to consider.
How much HP does a 70mm throttle body add?
~10whp from a 70mm throttle body. If you have a d-series or a b-series you can probably forget about it.
Does the BRZ have a throttle cable?
Torque Solution Black Throttle Body Spacer 2013+ FRS/BRZ/86
Most new cars use a Drive-By-Wire throttle, which eliminates the need for a throttle cable. A Drive-By-Wire system also allows the manufacturer to fine-tune the throttle response and how direct the input is.
Does Subaru have a throttle body?
A Subaru’s throttle body controls how much air is drawn into the engine, working in tandem with the driver’s accelerator demands. Inside the throttle body is a plate and valve system that opens and closes in response to acceleration and deceleration. This operation works manually or by sensors.
Are bigger throttle bodies better?
A larger throttle body by itself would have little effect on the performance of an engine. A larger throttle body is needed when other parts such as the intake manifold, cylinder head ports, intake valves, exhaust valves, exhaust ports, exhaust system, etc. are increased in size to flow more air and exhaust.
Does a bigger throttle body increase HP?
A larger throttle body by itself would have little effect on the performance of an engine. A larger throttle body is needed when other parts such as the intake manifold, cylinder head ports, intake valves, exhaust valves, exhaust ports, exhaust system, etc. are increased in size to flow more air and exhaust.
What is the diameter of the BRZ overpipe?
Power Driven FR-S / BRZ OVERPIPE replaces the most restrictive component in the factory BRZ / FRS exhaust system. With larger 2.5″ inch diameter piping, not only does it give your car better performance, but also gives it a deeper tone. The piping of this over-pipe has an OD (outer diameter) of 2.5″ inch / 65 mm.
What size throttle body is a GT86?
The Grams 72 mm Drive-By-Wire Electronic Throttle Body for GT86 & BRZ is a perfect upgrade for the factory 65mm throttle body; delivering a 48% increase in airflow.
Is a bigger or smaller throttle body better?
From the most basic standpoint, the higher the power output of the test motor, the larger the throttle body required. Upgrading a throttle body already capable of supporting 600 hp with a larger version capable of supporting 700 hp on a 300hp motor will have predictable results.
What is the diameter of the throttle body of the fa20?
Dimensions are 67mm up from 65mm for the valve diameter and the tapered entrance starting at a diameter of 72mm all maximum size.
