Jump to content


Welcome to Ultimate Subaru Message Board, my lurker friend!

Welcome to Ultimate Subaru Message Board, an unparalleled Subaru community full of the greatest Subaru gurus and modders on the planet! We offer technical information and discussion about all things Subaru, the best and most popular all wheel drive vehicles ever created.

We offer all this information for free to everyone, even lurkers like you! All we ask in return is that you sign up and give back some of what you get out - without our awesome registered users none of this would be possible! Plus, you get way more great stuff as a member! Lurk to lose, participate to WIN*!
  • Say hello and join the conversation
  • Subscribe to topics and forums to get automatic updates
  • Get your own profile and make new friends
  • Classifieds with all sorts of Subaru goodies
  • Photo hosting in our gallery
  • Meet other cool people with cool cars
Seriously, what are you waiting for? Make your life more fulfilling and join today! You and your Subaru won't regret it, we guarantee** it.

* The joy of participation and being generally awesome constitutes winning
** Not an actual guarantee, but seriously, you probably won't regret it!

Serving the Subaru Community since May 18th, 1998!

Guest Message by DevFuse
 

Photo
- - - - -

'01 Forester swap info - EJ251 vs EJ253


  • Please log in to reply
4 replies to this topic

#1 wtdash

wtdash

    Subaru Nut

  • Members
  • 772 posts
  • N. ID

Posted 13 January 2010 - 04:17 PM

Can these two Phase 2 engines be interchanged? Just swap the Intakes?

Or is it like the EGR issue w/the Phase 1 EJ25>>EJ22 swap, which will give a CEL w/out the EGR?

Edit: And does the EJ22 still work w/either the MAP or MAF-based system? I know I can swap intakes (thanks to 'subaru360') on either the 2.2 or 2.5, too.

Based on Wikipedia and a couple other sources these EJ25 SOHC engines came w/either MAF: EJ253 or MAP: EJ251.

And what's weird is they weren't consistently applied. The '99 EJ251
(MAP), was replaced by the EJ253 (MAF) in '00, and returned in '05??!
:-\

Thanks for any clarification.

Edited by wtdash, 13 January 2010 - 04:34 PM.


#2 wtdash

wtdash

    Subaru Nut

  • Members
  • 772 posts
  • N. ID

Posted 15 January 2010 - 05:10 PM

Anyone got anything?
Thanks

#3 johnceggleston

johnceggleston

    Lite Master of the Subaru

  • Gold Subscribers
  • 6,273 posts
  • Virginia

Posted 15 January 2010 - 07:36 PM

i doubt i'll know the answer, but i would need the year of each to even begin to answer.

#4 wtdash

wtdash

    Subaru Nut

  • Members
  • 772 posts
  • N. ID

Posted 15 January 2010 - 10:40 PM

I'm looking for interchange info between the Phase 2 EJ25 (and the EJ22 Phase 2) between the '99 and 2005 model years.

The only thing I know is the Forester I may buy is an '01, which means it should be the MAF-based EJ253.

I think I'm making this more difficult than it is, since I'll be swapping intake manifolds anyway, whether it's a MAF or MAP-based system shouldn't matter, as I don't think they're on the engine. They're part of the air intake system, which won't change if I swap motors.

Thanks

#5 Durania

Durania

    Elite Master of the Subaru

  • Members
  • 3,113 posts
  • Crossville, TN

Posted 15 January 2010 - 11:14 PM

I'm looking for interchange info between the Phase 2 EJ25 (and the EJ22 Phase 2) between the '99 and 2005 model years.

The only thing I know is the Forester I may buy is an '01, which means it should be the MAF-based EJ253.

I think I'm making this more difficult than it is, since I'll be swapping intake manifolds anyway, whether it's a MAF or MAP-based system shouldn't matter, as I don't think they're on the engine. They're part of the air intake system, which won't change if I swap motors.

Thanks


The 2001 Forester is going to be MAP based, just like the RS's. So that means that 98-99 is MAF where as the 00-01 is MAP.




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users