Subaru General Anything about Subaru related that would not be more appropriate in another existing i-Club forum.

Which is the better WRX motor to mod: the EJ20T or EJ25T?

Thread Tools
 
Search this Thread
 
Old Apr 18, 2008 | 10:44 AM
  #1  
RobG's Avatar
Thread Starter
Registered User
 
Joined: Mar 2008
Posts: 45
From: San Jose, CA
Car Info: 08 WRX 5dr TBE, Perrin TMIC, VF52
Which is the better WRX motor to mod: the EJ20T or EJ25T?

I've loved these cars for a long time and I think I will probably buy one in the next month or two. I want a white WRX wagon 5sp.

The question is this... do I want the 04-05 EJ20T or the 06-07 EJ25T? Which is the better motor to mod, in terms of durability, parts availability, power potential, etc?

My last fast car was a '98 Z28 6sp with a 9 psi Vortech... 540 hp at the motor. Very nice, very fast. Sold it a few years ago because it got to the point that I couldn't go anywhere without being followed and harassed by cops, even though it was very clean/stock looking except for the wheels. It was fairly quiet too (Borla exhaust).

So anyway... what are the realistic power options without a complete rip-the-motor-out-and-redo-it fest and having to run race gas? Is 400 hp realistically possible? I did a little poking around and it looks like 280-300 is possible with minor engine management and exhaust mods. I'm guessing turbo/intercooler upgrades are next.

The idea here is to have a nice, fast car that's still practical as a daily driver. I'll put some nice 17 or 18" wheels on it and some high performance all-season tires. I'll do springs/shocks/swaybars too. I spent six years autocrossing so I like a car that can handle. I have no real plans to autox this car, though. I think those days are over.

Thanks!

Rob
Old Apr 18, 2008 | 11:29 AM
  #2  
DemonPossessed's Avatar
Registered User
iTrader: (13)
 
Joined: Sep 2006
Posts: 1,211
From: bay area
Car Info: 05 wrx
2.5l ftw
Old Apr 18, 2008 | 11:49 AM
  #3  
pwnx0rz's Avatar
Registered User
iTrader: (8)
 
Joined: Aug 2006
Posts: 3,143
From: SF Bay Area
Car Info: '02 WRX wagon
both engines are great, but ej25 has a greater displacement which means more torque. if you really prefer the my02-05 or the saab 92x, i wouldn't worry too much about the engine, especially since you're looking more for a DD and not a track monster. if it were me though, i'd go with the 06-07 models just because of the ej25, but thats just me.
Old Apr 18, 2008 | 12:18 PM
  #4  
RobG's Avatar
Thread Starter
Registered User
 
Joined: Mar 2008
Posts: 45
From: San Jose, CA
Car Info: 08 WRX 5dr TBE, Perrin TMIC, VF52
Cool, two votes for the 2.5L...

I actually prefer the look of the 06-07... it' s just a matter of finding one at a reasonable price. Heck I have yet to find a white WRX wagon with a 5sp... it could be a long search.

Heck I've had far more luck finding white STi's, but I don't wanna deal with the insurance on one, and I really want the utiity (and slightly more stealthiness) of the wagon. Plus you never know how an STi will have been treated...

I really hate how they ruined the Impreza with the 2008's...

Rob
Old Apr 18, 2008 | 12:42 PM
  #5  
pwnx0rz's Avatar
Registered User
iTrader: (8)
 
Joined: Aug 2006
Posts: 3,143
From: SF Bay Area
Car Info: '02 WRX wagon
yeah, you just gotta give the 08's some time and youll start to like it before you know it. and yeah its pretty hard to find white wagons, not too many of them. just be patient and you'll find one. plus with the 06-07's, the ej25 is very similar to the sti engine, so all you really need are the turbo,injectors,fuelpump, intercooler and engine management, and you'll basically have a slightly detuned sti in terms of horsepower and straightline performance.
Old Apr 18, 2008 | 12:45 PM
  #6  
RobG's Avatar
Thread Starter
Registered User
 
Joined: Mar 2008
Posts: 45
From: San Jose, CA
Car Info: 08 WRX 5dr TBE, Perrin TMIC, VF52
The 08 Impreza sedan isn't bad looking... but the new wagon... EWWW.

If money was a little less of an object, I would probably go for an Outback Wagon instead (not the Sport -- the Legacy version), in an XT...

Rob
Old Apr 18, 2008 | 12:50 PM
  #7  
midnitewrx's Avatar
Registered User
iTrader: (10)
 
Joined: Apr 2006
Posts: 1,058
From: 831monterey ,CA ... the driver's seat!!!
Car Info: murdered out 06 WRX, but now is gone
06-07 FTW !!! NO REplacement for displacment (wink wink) im pretty much stock an put down 210wtq... 2.5l's all the way ... way more torque then 2.0l
Old Apr 18, 2008 | 01:02 PM
  #8  
VRT Gump's Avatar
VIP Member
iTrader: (4)
 
Joined: Apr 2006
Posts: 3,632
From: Yokosuka, Japan
Car Info: 2008 EVO X/1991 Nissan Skyline GT-R32
2.5 throws down more torque

my vote is the ej25t
Old Apr 18, 2008 | 05:39 PM
  #9  
Shazam321's Avatar
Registered User
iTrader: (1)
 
Joined: Aug 2005
Posts: 256
2.0L higher rev better gas milage. I believe its the same crank as the jdm sti but without cross drilling for high rpm. Thicker cylinder walls. More coolant capacity. Better flowing heads. I think it is a more solid motor, but eveyone has their opinion.

(I'm comparing the ej205 and the ej255, ej257 and ej207 are a different playing field.)
Old Apr 22, 2008 | 05:41 PM
  #10  
jinorazi's Avatar
Registered User
 
Joined: Mar 2008
Posts: 999
From: 925 CO/PH/WC
Car Info: 05 cgm imp
ej20 rev to 8000 or 8200...is it only jdm or udsm too?

i wanna get my hands on this ej20tt (ej20h / ej20r)


twin turbo ftw?
Old Apr 22, 2008 | 06:01 PM
  #11  
WRX409's Avatar
Registered User
 
Joined: Jul 2006
Posts: 1,069
From: Allentown,PA
Car Info: 04 WRX
Yes.
Both the EJ20T and EJ25T are excellent engines
and they are reliable and dependable too.
Old Apr 22, 2008 | 06:28 PM
  #12  
Subaru_dude's Avatar
Registered User
iTrader: (2)
 
Joined: Jan 2008
Posts: 1,182
From: San Jose, CA
Car Info: BMW 525i E39
Originally Posted by jinorazi
ej20 rev to 8000 or 8200...is it only jdm or udsm too?

i wanna get my hands on this ej20tt (ej20h / ej20r)


twin turbo ftw?
damn twin turbo boxer motor ...... i want this one in my Bug Eye
Old Apr 23, 2008 | 02:20 PM
  #13  
derekthecynic's Avatar
Registered User
iTrader: (1)
 
Joined: Mar 2006
Posts: 362
From: Burlingame, CA
Car Info: 95 RHD WRX
Originally Posted by jinorazi
ej20 rev to 8000 or 8200...is it only jdm or udsm too?

i wanna get my hands on this ej20tt (ej20h / ej20r)


twin turbo ftw?
Want it? You can can them all day for 1g. No one wants them, it's not a very good twin turbo setup, You can only do it if you're RHD, otherwise it turbos won't clear if you try to put it in LHD car. Most people just scrap the twin turbo setup, that doens't make very much power, slap on a gc8 wrx td05 16g and it's then the same thing as an ej20g. 260/280hp stock(depends on ecu).

My ej20g revs to 7250 on my ecu but sti ecu on same motor will rev to 8k+
Old Apr 23, 2008 | 02:36 PM
  #14  
JourdanWithaU's Avatar
It's QQ thankyouverymuch
iTrader: (39)
 
Joined: May 2007
Posts: 19,721
From: San Jose
Car Info: 2011 SWP WRX Hatch
25FTMFW.... That's what the plates on my next Subie will look like...
Old Apr 24, 2008 | 12:20 AM
  #15  
international B's Avatar
Chewwwwy
iTrader: (5)
 
Joined: Nov 2002
Posts: 3,399
From: Fremont
Car Info: Random, yet well planed selection of jdm cult cars
Originally Posted by midnitewrx
06-07 FTW !!! NO REplacement for displacment (wink wink) im pretty much stock an put down 210wtq... 2.5l's all the way ... way more torque then 2.0l
not more than the ej207...



All times are GMT -7. The time now is 11:25 AM.