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Old 02-11-2011, 10:10 AM   #1
oldmule
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Default EJ22 Phase II into Phase I GF

I tried several searches and read a lot of threads, but didn't see this and can't find it on the other boards....

I am putting in a 2000 EJ22 Phase II long block into my 98 GF, both are SOHC and about the same except for the MAF in the 98 and MAP in 00. It looks like I could just change out the throttle body on the PH II to the PH I body and have a plug and play setup.
Does anyone know if this works?
Thanks
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Old 02-12-2011, 11:22 AM   #2
Storm
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Issues you will run into include:

The timing gear on the crank and cam (may be different, confirm and use the old stuff if necessary).

Injector plugs are slightly different. Shave the locating tabs off the new injectors and put your injector plugs on so the thumb tabs are facing inward.

Idle air control valve is completely different. You will have no ECU control for idle and a resultant CEL.

You must swap the engine harness to the new motor and reuse as many sensors as possible, or remove the entire ECU harness and swap it over using the ECU from the new motor.

Jay
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Old 02-13-2011, 09:31 AM   #3
oldmule
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That's what I was afraid of. The new engine uses top feed injectors as well. I'm wondering if I shouldn't go ahead and swap ECUs and wiring harnesses. I have an SMT6 that I want to run and APPEARS it was made for the 99 and newer ECUs from what I have found AFTER buying it.

The plan was to use this engine as is till I get a hybrid built. Now, I am seeing that this one not only has more HP stock, but has better parts to work with.

What do you think Jay?
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Old 02-13-2011, 06:25 PM   #4
gloyale
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Quote:
Originally Posted by Storm View Post

Idle air control valve is completely different. You will have no ECU control for idle and a resultant CEL.
Running a Phase II 2.5 in on a 90 Phase I computer. IAC port in 2.5 intake blocked off. An origninal 90 IAC valve plugged in, but not ported to anything.

Runs with no CEL. Now, a 98, ODB II ecu may be more particular, but it's possible to run Phase II on Phase I managment, pretty easy.



Some notable issues we had:

Must swap Throttle bodies. Along with this, you must make a block off plate to cover the IAC post at the top of the Phase II intake.

Injector connectors. Swap connectors (cut & solder) or shave the tab like mentioned above.

Plug wires. On earlier phase I engines(90-96ish?), the coil uses female terminals. These will not match the phase II plug wires which you will be using. You will need to either A) pull the boot off the phase II wires, and pry off the clip and install a male one to match the early coil.
B) Get a coil from a late model 97+ Imp or Legacy with a 2.2 It will have a coil compatable with phase I harness, but has male ended terminals to match the phase II wires.

The plug wire issue is probably not relevant to this poster, as his 98 Imp likely has a male ended coil already.
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Old 02-13-2011, 07:02 PM   #5
oldmule
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I noticed this Phase II block has pickups on the cam gears, a different coil pack mounting (2 holes vs 4 on the old one).


Clarification - AIC is the air idle circuit correct? I come from the V8 Chevy world and am still trying to figure out all of this stuff. It hurts my brain sometimes, but I'm enjoying the new learning curve.

I just double checked and my SMT6 says it's for 99-01 vehicles. So, I have to change ECUs and all out.... Oh well. I got lucky and have a guy with everything I need.
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Old 02-14-2011, 12:49 PM   #6
andy foonz
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Default intresting

very intresting....
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Old 02-14-2011, 04:06 PM   #7
oldmule
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I found that even thought the SMT6 says it's for the 99-01, it has been used as far back as a 94 by a local shop.

But, I am going to bite the bullet and make the wiring and ECU change. I like the idea of a MAP setup.... And, it should be more forward compatible with other changes I might make.
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