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Old 06-11-2014, 10:09 PM   #1
OHTOORECKS
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Default Clear direction on 2.2 swap into 99 Forester

I need clear direction on what all is needed to put my EJ22 Phase II into my 99 Forester with an EJ25 SOHC Phase II... FWIW, I have searched on this topic and have come up with such mixed responses so I don't really know what direction to head in...

Donor car: 99 OBS, Receiver: 99 Forester S.

I know the exhaust manifold will need to come from the OBS. I've seen conflicting reports about the intake manifold and the wiring...

Other than using the single port exhaust manifold, is there anything else that needs to be swapped or is it true plug and play?

EJ25 has a MAF, I see no MAF on the EJ22 so I assume it's speed density... I also assume that because of this I will need to swap the intake manifold and utilize the EJ25 intake system as it has the MAF on it...
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Last edited by OHTOORECKS; 06-11-2014 at 10:19 PM.
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Old 06-12-2014, 03:04 PM   #2
OHTOORECKS
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I know someone out there has done this swap! Anyone???
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Old 06-13-2014, 11:59 AM   #3
OHTOORECKS
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Dang, guess I'm going into this one blind. I'll swap the intake (to retain MAF) and exhaust (to retain single port) manifolds and post back.
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Old 06-14-2014, 01:04 PM   #4
Hondaslayer
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1998 Forester, lifted.

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It's not blind, the information is out there. It's no different than any other 2.5 to 2.2 swap. Match the electronics and cam/crank gears to the ECM and call it a day.

In this case, swap the intake manifold. Pull the timing covers and check the crank gear and the drivers side cam gear pick up points for the sensors. If they match don't worry, if different swap them with the ones from the 2.5 engine. While the covers are off replace the timing belt, tensioner and pullies (and maybe the water pump)
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Old 06-14-2014, 06:30 PM   #5
69subaru360
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Yep it's about as simple as swaps get. Use the single port header, swap the intake manifold and the crank and cam gears if the triggers on the back are different. That's all there is to it.
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Old 06-14-2014, 11:06 PM   #6
OHTOORECKS
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Thanks guys. I'm wrapping everything up.

I just ended up using the 2.2 ex mani and the 2.5 intake mani. Everything seems to be going smoothly. From what I can tell the trigger points on the cam and crank sensor are the same.

Should be able to start it tomorrow! I'll report back!
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Old 06-15-2014, 02:13 PM   #7
OHTOORECKS
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All done but it won't start. It cranks and fires but won't turn over.

Hmm. Any ideas?

I did not change the pulleys. Didn't see that suggestion before I did the swap. I'm going to inspect those tonight and saw if they match.

Last edited by OHTOORECKS; 06-15-2014 at 04:57 PM.
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Old 06-15-2014, 06:50 PM   #8
OHTOORECKS
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Sure enough, they don't match. I'll be swapping tomorrow!
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Old 06-27-2014, 10:52 AM   #9
OHTOORECKS
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Default

Forgot to update - motor has been running great! Had to fix a few minor gremlins unrelated to the swap...

In case anyone stumbles upon this thread - I did the following to swap a phase 2 ej22 (speed density based) into where a phase 2 ej25 (MAF based) was: ej22 long block, ej22 single port exhaust manifold, ej25 intake manifold, ej25 engine wire harness, and ej25 cam pulleys and ej25 crank pulley.

Literally everything else stays put... Swap away everyone!
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Old 06-27-2014, 07:12 PM   #10
JoshP
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You only need the driver's side cam pulley.
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