How Much Power Can A Ej25 Handle

How much power can a stock EJ handle?

They will hold up to 400 whp (again as shown in our PPIHC car), but if you want to push up to or beyond that power level, a set of aftermarket H-Beam rods would be recommended. via

Is the EJ25 a good engine?

As is the case with most performance engines, the Subaru EJ25 is nowhere near perfect and has its fair share of issues. With all of its imperfections studied and properly sorted out however, the EJ25 can prove to be a reliable engine to enjoy performance driving with. via

How much horsepower does an EJ25 have?

When Subaru pulled the covers off the S209 this week, we learned that the old EJ25 2.5-liter lurked under the hood. Yes, the same EJ25 that's powered the WRX STI since 2004. In the S209, power rises from 305 hp to 341 thanks to a new turbocharger running higher boost pressure, plus forged pistons and connecting rods. via

Is the EJ motor reliable?

Subaru EJ257 Reliability

We're inclined to say the EJ257 offers below average reliability. It's not so much that the 2.5L Subaru boxer engine is plagued by endless problems. However, there are a few pretty severe and costly issues that occur on the EJ257 more frequently than the average engine. via

Is the EJ255 reliable?

We don't think the number of problems with the EJ255 are concerning. It's a reliable engine in that regard. However, turbo failures and internal problems with rings, ringlands, pistons, and rod bearings can be costly. via

What is a EJ25 engine? (video)

What's the difference between EJ255 and ej257?

The only difference between them was the turbo and intercooler set-up, and the tuning of the ECU. Starting with the 2006 – 2007 WRX and Forester XT, this was the first point where the EJ255 actually started to receive different parts from the STI. via

Is Subaru 2.5 turbo a good engine?

A modern Subaru 2.5L engine should have no problem lasting over 200,000 miles as long as you take care of it. There are plenty of 2.5L engines that have lasted over 300,000 miles as well when owners have done the regular maintenance on them such as oil changes, spark plug changes, and coolant changes. via

What cars had the EJ25 engine?


  • 2006-2014 Subaru WRX.
  • 2004-Present Subaru STI.
  • 98-2011 Impreza.
  • 1996-2010 Legacy.
  • 1996-2012 Legacy GT.
  • 1996-2012 Outback.
  • 1998-2010 Forester.
  • 1998-2013 Forester XT.
  • via

    Is the 2.5 L Subaru engine turbo?

    The Subaru 2.5 engine is a 16-valve flat-four boxer naturally-aspirated and turbocharged engine with a 2.457L displacement. Depending on the year, make and model it appears in, the engine's HP ranges from 155 to 172.6 and 140 to 170 lb. -ft. via

    When did the EJ25 come out?

    The 2.5-liter engine from EJ series appeared in 1995. EJ25 is the biggest engine among other EJ engines - EJ15, EJ16, EJ18, EJ20, and EJ22. via

    How much HP can a EJ20 handle?

    300 whp: The EJ20/EJ25 engines can handle 300 whp maximum with stock internals with no further modifications other than a proper fuel management tune. via

    How long do WRX's last?

    This legendary engine was essential for rally race wins and is famous for its distinguishable growl. Drivers have reported that the boxer four-cylinder can last up to 250,000 miles with proper care. On the other hand, pushing your WRX past its limits could wear out the engine at only 60,000 miles. via

    Why do Subaru engines fail?

    These problems included oil burning, oil starvation, and head gasket issues. These problems were not caused by heavy mileage and abuse, but because of the engine's design and its poor engineering. Also, it had plenty of quality issues. Now let's discuss these Subaru engine problems one by one. via

    How much boost can a EJ255 handle?

    max boost at 24.2psi and tapers off at 22.5psi at 7Krpm. wrxsti-l wrote: You are one bit of bad fuel or hot weather away from a rebuild. Our fuel here is 97octane, average temp is 31-3'c. via

    What Turbo is on EJ255?

    Subaru's EJ255 engine was a turbocharged 2.5-litre horizontally-opposed (or 'boxer') four-cylinder engine. via

    Does the EJ255 have head gasket issues?

    The second group of head gasket issues came with the EJ251, EJ252 and EJ253 2.5 liter engines. These head gaskets suffered from external leaks between the cylinder heads and the engine block causing coolant and/or oil to leak out between the head and the block. via

    How many liters is a ej25?

    The EJ25 engine, which had a displacement of 2.5 liters, was launched by Subaru in 1995. The block of this engine was identical to the block of the EJ20 engine – just like its older brother, it was made of aluminum alloy and had a height of 201 mm.

    Manufacturer Gunma Oizumi Plant
    Cylinder bore, mm 99.5


    Why are Subaru engines so noisy?

    The release of the high-pressure combustion gasses entering the exhaust system causes this noise. Depending on several different inputs into the ECU, such as engine coolant temperature and throttle opening angle, this noise could occur until the engine coolant temperature reaches the desired temperature. via

    Are boxer engines hard to work on?

    The difficulty level of working on these engines will be defined by your mechanical ability and the type of work you plan on doing. Routine maintenance is fairly easy. The engine bay is easy to get around in my opinion, but it may take some getting used to. via

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