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Old 02-12-2005, 07:35 PM   #1
PeteDucati
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Default ej25 same as ej257?

Over the summer I had the ej257 shortblock dumped into my WRX. Some Subi mechanic did the job for me on the side.. I was quite specific when I told him I wanted the ej257.

Something let go two weeks ago and I finally pulled the motor today. Stamped into the top of the block is "EJ25". Is it possible I didn't get what I paid for?
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Old 02-12-2005, 08:02 PM   #2
Rippa
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From my understanding...

ej25 = 2.5 rs
ej257 = STi/FXT

I'm not 100% on this though, maybe the guru's can chime in on this one?
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Old 02-12-2005, 08:13 PM   #3
kcook
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wow that sux... ifu got the 2.5rs motor.. u should be able to tell from no TMIC... but if u got the sti engine.. u should know
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Old 02-12-2005, 10:08 PM   #4
MZM
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EJ25 is on all 2.5L Subaru engines.
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Old 02-12-2005, 11:19 PM   #5
LiquidForce
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I did the same swap this summer and I believe mine just has ej25 on it. I'll check tommorow for you when its light. I'd be amazed if an ej25 from an RS held up that long if you were still running the td05-16g.
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Old 02-12-2005, 11:54 PM   #6
fogdor
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Quote:
Originally Posted by MZM
EJ25 is on all 2.5L Subaru engines.
^^^ What he said. I have seen an EJ257 being taken apart and it is indeed stamped "EJ25". I have NOT seen an EJ25 being taken apart but I would assume they are completely open deck blocks, without the support "ribs" at the top like the turbo'd motors have...

Linky of what I'm talkin about here -> http://wrxworld.com/projects/STIvsWRXEJ/index.htm
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Old 02-13-2005, 06:59 AM   #7
PeteDucati
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I'm not going to rip the motor down myself, I want the motor builder to do it so he can properly diagnose the problem. I should know more by the end of the week, and I'll update the post.

Ps. Oil started dumping out of the timing cover after hitting 20psi on the newly installed DeadBolt 20g. The Perrin catch can also leaked out a butt load of PCV sludge all over my engine compartment.. oil in the turbo and intercooler, but not much.. woo hoo to the catch can!
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Old 02-13-2005, 12:29 PM   #8
LiquidForce
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You probably lost a cam seal.
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Old 02-13-2005, 12:29 PM   #9
gpatmac
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Old 02-13-2005, 12:40 PM   #10
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You would have known if it was an RS block, it is a little bit thicker at the bell-housing in the area where the turbo mounts. The only reason I know this is that one of our dealers recently had trouble installing a 20G on an old Cobb worked 2.5L block that he had in his shop (he had it in the shop for over a year and a half). We started looking and realized that the reason the turbo would not mount (coolant line was hitting the bell housing) was that it was slightly thicker in that area than the EJ20 and EJ257.
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Old 02-13-2005, 06:58 PM   #11
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Axis, EJ25 is semi-closed.
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Old 02-13-2005, 07:24 PM   #12
MZM
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Default Coolant pipe and bell housing

Quote:
DeadBolt Enterprises

You would have known if it was an RS block, it is a little bit thicker at the bell-housing in the area where the turbo mounts. The only reason I know this is that one of our dealers recently had trouble installing a 20G on an old Cobb worked 2.5L block that he had in his shop (he had it in the shop for over a year and a half). We started looking and realized that the reason the turbo would not mount (coolant line was hitting the bell housing) was that it was slightly thicker in that area than the EJ20 and EJ257.
FYI I just mounted your 20G on a EJ255 stock long block and the lower coolant pipe hits the bell housing. Not enough to get twisted shorts though. Torque the mounting bolts and it goes on after a slight remodel of the pipe. No problem.

Mike McBride
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Old 02-13-2005, 07:29 PM   #13
unkadave
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Quote:
Originally Posted by MZM
FYI I just mounted your 20G on a EJ255 stock long block and the lower coolant pipe hits the bell housing. Not enough to get twisted shorts though. Torque the mounting bolts and it goes on after a slight remodel of the pipe. No problem.

Mike McBride
poooh The FPGreen is even a little bigger. Well at least I cans start planning for a soultion.
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Old 08-16-2010, 05:04 PM   #14
sti-v8killr
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So do all EJ257s have an EJ25 stamp on top of the motor just under the alternator?
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Old 08-16-2010, 06:02 PM   #15
minifreak
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Quote:
Originally Posted by sti-v8killr View Post
So do all EJ257s have an EJ25 stamp on top of the motor just under the alternator?
Yes, my ej255 wrx engine has the EJ25 stamped on it.
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Old 08-16-2010, 07:38 PM   #16
Byzantium
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Quote:
Originally Posted by sti-v8killr View Post
So do all EJ257s have an EJ25 stamp on top of the motor just under the alternator?
So you had to bump a 5 yr old thread for this?
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