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
- - - - -

Trying to determine a direction for swap


  • Please log in to reply
1 reply to this topic

#1 Dangerdave

Dangerdave

    USMB Regular

  • Members
  • PipPipPip
  • 62 posts
  • Waterloo

Posted 24 September 2007 - 12:53 PM

Hey,

I've been doing alot of searching and am hoping to bounce some things of the more experienced swappers in here. I've got a 93 impreza 1.8 awd imprezaL. The 1.8 has finally given up at 285,000. I bought a 2001 legacy gt engine to replace it. The new engine didn't come with a computer or harness. I'm trying to decide if I should:

a) Use the 1.8 harness. Which some people seem to have done with some success

B) Use a loose 2.2 harness and computer that I already have

I've read about several people running into problems with the timing being too advanced with the 1.8. Will the engine run better enough for me to justify all the work associated with running the 2.2 harness? I've heard that after you swap manifolds and intakes. The 2.2 harness will run the 2.5 quite well.
Any input or wisdom would be greatly appreciated

#2 s'ko

s'ko

    RIP

  • Members
  • 1,722 posts
  • Los Angeles

Posted 25 September 2007 - 06:40 PM

Hey,

I've been doing alot of searching and am hoping to bounce some things of the more experienced swappers in here. I've got a 93 impreza 1.8 awd imprezaL. The 1.8 has finally given up at 285,000. I bought a 2001 legacy gt engine to replace it. The new engine didn't come with a computer or harness. I'm trying to decide if I should:

a) Use the 1.8 harness. Which some people seem to have done with some success

B) Use a loose 2.2 harness and computer that I already have

I've read about several people running into problems with the timing being too advanced with the 1.8. Will the engine run better enough for me to justify all the work associated with running the 2.2 harness? I've heard that after you swap manifolds and intakes. The 2.2 harness will run the 2.5 quite well.
Any input or wisdom would be greatly appreciated


You have a pretty complex swap if you are going to put the complete 2001 engine onto the 93 car. Mainly because the 2001 is the OBD2 computer system and your impreza is OBD1. There are a ton more sensor and stuff on the OBD2 that your 93 car doesn't have.

I know that the 1.8 intake manifold will bolt up to a 2.2 long block. But I don't think it would work with a 2.5 long block. I know that the 2.2 heads will bolt onto the 2.5 short block. Then the 1.8 manifold might work bolted to the 2.2 heads. You would get a pretty high compression motor, in the neighborhood of 11.5:1.

Regarding the 2.2 harness and ECU you already have. If it's 1995 and newer, it's an OBD2 harness. You would have to make sure that you do something with the gas tank pressure sensor or you will trip a CEL.

You would probably need to get an OBD2 harness for the 2.5 motor and the 2.5 ECU. You might get by with a 2.2 ECU, but I am not sure. RS25 might be able to give more insight and info on this than here.

Call EastCoastSwapper or Garage Tuning to see if they have parts lying around or can give you some technical advice.

Good Luck




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users