What year does STI have the RA block?
The Subaru STI RA block is a highly sought-after engine component known for its durability and performance. It has been a topic of interest among car enthusiasts and mechanics alike. In this article, we’ll explore the history of the RA block, its significance, and the specific years it was featured in Subaru STI models.
What Is the RA Block?
The RA block, short for "Rally Application" block, is a reinforced engine block designed by Subaru for high-performance and rally-inspired driving. It is known for its thicker cylinder walls and stronger construction compared to standard STI engine blocks, making it ideal for handling higher levels of boost and power output.
Which Year STI Models Feature the RA Block?
The RA block was introduced in the Subaru STI lineup starting with the 2019 model year. This engine block was part of Subaru's effort to enhance the performance and reliability of their vehicles, particularly for enthusiasts who push their cars to the limit. The 2019 Subaru STI and subsequent models, including the limited-edition STI S209, are equipped with the RA block.
Why Is the RA Block Significant?
The RA block is highly regarded for several reasons:
- Durability: The reinforced design allows the engine to withstand higher stress levels, making it suitable for racing and high-performance applications.
- Performance: With its ability to handle increased boost pressure, the RA block enables higher horsepower and torque outputs.
- Reliability: The thicker cylinder walls reduce the risk of engine failure under extreme conditions.
These features make the RA block a favorite among tuners and performance enthusiasts who demand the best from their vehicles.
Conclusion
The Subaru STI RA block first appeared in the 2019 model year and has since become a hallmark of Subaru's commitment to performance and reliability. Whether you're a rally enthusiast or simply someone who appreciates a robust engine, the RA block is a testament to Subaru's engineering excellence. If you're considering a Subaru STI with the RA block, models from 2019 onward are the ones to look for.
Frequently Asked Questions
How much HP can a Type RA block hold?
We're often asked if the STI Type RA Blocks can hold as much power as an IAG 550 Short Block, and while there are reports that the RA blocks can handle up to 450whp, the real question is whether it can reliably handle the additional power.
What is the best year of the Subaru STI?
Here are the best years available for the Subaru WRX STI:
- 1992-1999 Subaru WRX STI.
- 2004 Subaru WRX STI.
- 2005 Subaru WRX STI.
- 2006 Subaru WRX STI.
- 2007 Subaru WRX STI.
- 2017 Subaru WRX STI.
- 2018 Subaru WRX STI.
- 2019 Subaru WRX STI.
What engine is in the 2019 STI?
2.5-liter turbocharged BOXER engine
The 2019 WRX STI will reach Subaru retailers this Summer. Powered by a 2.5-liter turbocharged BOXER engine, the WRX STI increases horsepower to 310 with the help of a new air intake and high flow performance exhaust. A retuned ECU and stronger pistons also contribute to the increased engine performance.
What is the difference between the STI and the STI RA?
As far as performance, the Type RA blows the regular STI out of the water with factory upgraded parts that brought the standard 305 horsepower up to 310 hp. A retuned ECU, a higher flow exhaust, updated intake, and stronger pistons are all installed to give the Type RA a little more get up and go.
Which STI has Type RA block?
Then the 2019 STI came out, and it turned out that the from that point on, all STI's got this new Type RA block (Subaru part number 10103AD020).
What is the rarest Subaru STI?
The Rarest STI Models Ever Made By Subaru
- 8 Subaru Legacy STi S410.
- 7 Subaru Impreza WRX STi Spec C TYPE RA-R.
- 6 Subaru Impreza WRX STI CS400.
- 5 Subaru Impreza WRX STI tS Type RA.
- 4 Subaru Impreza WRX STi S209.
- 3 Subaru Impreza 22B.
- 2 Subaru WRX STI Type RA NBR Special.
- 1 Subaru Impreza WRX STI Project Midnight.
What years of STI to avoid?
The 2000-2002 and 2008-2016 versions are the worst on the market. There are some quality years available for the Subaru WRX STI if you're determined to invest in this vehicle. We recommend the 1992-1999, 2004-2007, or 2017-2022 selections for the best results.
What STD can be dormant for years?
You can have chlamydia for months or even years without knowing due to the asymptomatic nature of the infection. This means you will be infected, but symptoms won't be apparent. Chlamydia, if left untreated, can cause serious health problems and affect both female and male fertility.
How many Subaru STI RA were made?
500 units
How much HP can an ej257 handle?
At around 500 – 550 whp, and/or if you are making over about 24 psi of boost or more, the stock cylinders would need to be reinforced to hold that power reliably.
