Are EJ257 reliable?
All that said, the EJ257 can be a reliable engine that provides average longevity. Maintenance is one of the big keys as with any engine. Use high quality oils, check oil levels, change fluids on time, so on so forth. If you plan to tune the WRX STI EJ257 engine then ensure you have a well setup and dialed in tune.
Are stock STI reliable?
The Subaru WRX STI Reliability Rating is 2.5 out of 5.0, which ranks it 36th out of 36 for compact cars. The average annual repair cost is $758 which means it has average ownership costs.
How much HP can EJ257 handle?
400 whp
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.
Is Subaru EJ25 reliable?
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.
Why are EJ Motors unreliable?
The truth is that most EJ failures are attributed to people using poor quality oil, not checking/ changing oil, poor modifications being installed, and the number one cause of killing an EJ motor is improper/ poor tuning, or no tuning after performing mods!!
Is EJ257 forged?
Spool EJ257 WRX STI Forged Connecting Rods and CP Forged Pistons. Pistons are available in: Compression Ratios: 8.2:1, 9.0:1 and 10.0:1. Bore Sizes: STD 99.5mm, 99.75mm, 100mm and 100.5mm.
What is the most reliable Subaru STI?
The 2004 Subaru WRX is generally regarded to be the most reliable model year. This is based on the total number of complaints that have been filed per year. The 2005 through 2007 model years also generally are considered to be more reliable than the earlier and later years.
Does STI come with forged internals?
Registered. USNSTI said: AFAIK no model STI has had forged internals.