What cars did the EJ255 come in?
The 2.5L EJ255 Subaru engine is in the following cars:
- 2006-2014 Impreza (WRX)
- 2004-2013 Forester XT.
- 2005-2012 Legacy GT.
- 2005-2009 Outback XT.
- 2004-2006 Baja Turbo.
Are all EJ255 the same?
The key difference in the new EJ255 with the D25 heads is the fact that the D25 heads had a smaller combustion chamber volume (approximately 51cc’s down from ~56cc’s in the B25 heads) and they also saw the introduction of secondary air induction that required new ports in the heads.
How many valves are in a EJ255?
The engine had DOCH cylinder heads, 16 valves and based on semi-closed cylinder block (2004-2006 EJ257 shared the same EJ255 block).
Is the EJ255 turbo?
Subaru’s EJ255 engine was a turbocharged 2.5-litre horizontally-opposed (or ‘boxer’) four-cylinder engine.
How much HP can a stock EJ255 block 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.
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.
How much power can a EJ25 handle?
300 whp
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.
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.
How much does it cost to replace a Subaru head gasket?
Cost to Fix a Subaru Head Gasket The average cost to replace a head gasket is about $1,000, but can range anywhere from $1,200 to $1,400. If you opt to DIY, it is recommended that you use a Subaru MLS gasket, otherwise known as a multi layer steel gasket.
How much HP does a EJ25 have?
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. 400 whp: We suggest a set of forged AMR pistons and billet rods to safely boost up the engine.
How much HP can stock EJ255 handle?
Why do Subaru engines explode?
Below are a few of the reasons why many believe Subaru Piston ringlands fail. At the end of the day, the biggest reason is excess heat and pressure generated by engine knock, detonation, or pre-ignition.