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Old 02-22-2011, 01:56 PM   #1
JT99
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Question Intake Manifold Interchangibility Question...

I have a phase II EJ22 car that is MAF. I'm working on a drop-in motor and need to pick up an extra IM to simplify the switch. Phase II EJ22 intake manifolds aren't the most plentiful, but some places list SOHC phase II EJ25 IMs as fitting my car too. Is that a typo or will a SOHC EJ25 IM fit phase II EJ22 heads?


I know DOHC IM is a completely different animal, but I have never had any parts from a SOHC 2.5 in my hands.


Anybody know for a fact that a SOHC EJ25 IM will or will not work with EJ22 heads?
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Old 02-22-2011, 04:44 PM   #2
grafton
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useless post/answer:

they should match, but I don't have a sohc 2.5 to look at to double check though
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Old 02-22-2011, 08:49 PM   #3
BAN SUVS
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All the phase II NA manifolds are compatible.
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Old 02-22-2011, 09:36 PM   #4
GrundleJuice
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05+ are superior design, but might be harder to come by.
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Old 02-22-2011, 10:55 PM   #5
JT99
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Well that is certainly helpful information. Being MAF doesn't matter?

So what's the deal with the plastic IM? Is it an option as well for me?

Thanks for the replies.
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Old 02-22-2011, 11:19 PM   #6
BAN SUVS
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You'll want to find a '99 RS manifold to keep things simple.
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Old 02-23-2011, 07:21 AM   #7
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As said earlier, the phase II stuff will interchange. The plastic piece will bolt on, but needs modded for cable throttle body. The 05+ manifold is the same way but needs some other work too.

I've got a manifold that'll work for ya hangin in the garage if you're interested.
Jay
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Old 02-23-2011, 11:23 PM   #8
JT99
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Yeah, I just want a straight bolt-on that requires no modding.

Does your IM still have the fuel rails on it? What are you asking for it? Are you needing any misc. parts yourself?


Quote:
Originally Posted by Storm View Post
As said earlier, the phase II stuff will interchange. The plastic piece will bolt on, but needs modded for cable throttle body. The 05+ manifold is the same way but needs some other work too.

I've got a manifold that'll work for ya hangin in the garage if you're interested.
Jay
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Old 02-24-2011, 08:09 PM   #9
Storm
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Still has the rails but the injectors are not in. I could use a rust free rear subframe or a phase II EJ25 crankshaft that doesn't need machined.....
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Old 02-25-2011, 10:13 AM   #10
JT99
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I have a 2000 OBS shell from South Carolina waiting to have the underneath pulled off...but I won't be getting to that any time before July. You're more than welcome to come to KY with a wrench and a can of PB Blaster.
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Old 02-25-2011, 07:24 PM   #11
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Tempting....but nah.

PM me if you'd like to talk price and contact info. I'm not out to screw anyone price wise.

Jay
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Old 05-21-2011, 04:30 PM   #12
ryden
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i have a 97 obs and have a ej25 intake manifold laying around. i dont what year or phase but i see you guys said that if its phase II like my obs that it would bolt up. but would it actually do anything performace wise or just a waste of time?
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Old 05-23-2011, 02:26 PM   #13
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anyone have any ansers for this?
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Old 05-24-2011, 01:34 AM   #14
BAN SUVS
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It will not make any difference whatsoever to performance. Really, nothing will other than cams, header, headwork, and higher compression plus tuning. Nothing on the intake side is necessary until you really start building.
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Old 05-24-2011, 03:10 AM   #15
Zefy
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how will getting a new intake manifold simplify the swap?

it takes minutes (~10 of them) to swap intake manifolds between motors. Leave everything on it (coil, wires, vacuum lines, fuel stuff) and just undo the 8 bolts. Replace the gaskets, away you go.

then you won't have to worry about a plug being different or anything like that.

<<<--- swapped 99 ej22 with 2003 ej25 using original manifold/wiring.
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