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Old 04-11-2004, 03:41 AM   #1
Kostamojen
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Cool 2005 N/A Engines: Are we going to Phase 3 now? (Look at the design!)

Holy cow, I didnt realize MAF was coming back! I knew we were getting the JDM style intake manifolds finally, but this looks completely different... Look at the 3" airflow all the way through the intake!





Pics are from a 2005 Forester.
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Old 04-11-2004, 04:04 AM   #2
mycarsux
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does it still make the same amount of power?
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Old 04-11-2004, 05:24 AM   #3
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Little more supposedly. 168?
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Old 04-11-2004, 05:54 AM   #4
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looks much easier to turbo
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Old 04-11-2004, 01:58 PM   #5
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currently i think we have 3 or 4 models on the 2004 series of teh ej25

we have
1. plastic
2. SULEV using a 3 peice intake manifold with MAF
3. aluminum intake with egr
4. and i dont recall if the 04 has it(i know 03 did)
but a standard aluminum without egr

to my understanding they are different ways to try to make te motor more reliable(the s-ulev was just to be a more emissions friendly motor)

either way if it was up to me id just take the NA2.5L blocks that subaru has and burn all of them

its time for somthing new and reliable... either close the decks, make the walls thicker or just stop making the NA version and go back to the 2.2 and get more power out of that
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Old 04-12-2004, 02:05 AM   #6
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yummy, clean engine bay
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Old 04-12-2004, 03:57 AM   #7
Penphoe
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I take it it's got individual coils for each spark plug? I don't see a coil pack on the engine.

The intake plumbing looks much more cleaner and direct than before.

LaterZ!
Darren!!
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Old 04-12-2004, 09:43 AM   #8
orndog
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Quote:
Originally posted by Penphoe
I take it it's got individual coils for each spark plug? I don't see a coil pack on the engine.

The intake plumbing looks much more cleaner and direct than before.

LaterZ!
Darren!!
Looks like there's a coil pack on the passenger side behind the intake to me.
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Old 04-12-2004, 11:57 AM   #9
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Is it electronic throttle control? Fuel lines are differnt too. Alot has changed. Is the block pretty much the same though?
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Old 04-12-2004, 03:56 PM   #10
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Quote:
Originally posted by Hawk296
Is it electronic throttle control? Fuel lines are differnt too. Alot has changed. Is the block pretty much the same though?
I think all subaru models except wrx will be electronic throttle control for MY05
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Old 04-12-2004, 04:20 PM   #11
xtorted-legacy
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why not make the wrx flybywire also?
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Old 04-12-2004, 04:44 PM   #12
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That looks very similar to the earlier model Foresters from the late 90's. Quite surprised to see the MAF come back on a non-turbo engine. I guess it's less expensive to keep all Subaru engines MAF-based for both turbo and non-turbo?

The other surprising item noticed is that the intake manifold isn't plastic yet. If they are cost-cutting, wouldn't that be the next natural step to take?
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Old 04-12-2004, 04:59 PM   #13
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stricter emissions control, MAF system's run cleaner then MAP system
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Old 04-12-2004, 05:09 PM   #14
8Complex

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I wouldn't call it a phase III motor... that has to do with it's internal design only.

The intake looks like it'd be smoother for turbo'ing, for sure... it's also compatible with our current heads, if you look at where the bolt pattern starts on it.
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Old 04-12-2004, 07:04 PM   #15
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Quote:
Originally posted by HndaTch627
stricter emissions control, MAF system's run cleaner then MAP system
it willprobably ha ve both like many of the other cars have
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Old 04-12-2004, 07:15 PM   #16
RebelINS
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Are they going to add VVT for USDM NA engines anytime in the future?

-Wes
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Old 04-12-2004, 09:12 PM   #17
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Quote:
Originally posted by RebelINS
Are they going to add VVT for USDM NA engines anytime in the future?

-Wes
Thats anyones guess...
Quote:
Originally posted by hunts
The other surprising item noticed is that the intake manifold isn't plastic yet. If they are cost-cutting, wouldn't that be the next natural step to take?
Well actually the 04 RS intake manifolds are plastic. Thats the only 04 model I think that had the plastic manifold though... The 05 EZ30-R will have a plastic intake manifold, but it looks like the rest of the N/A engines will have this new improved design.
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Old 04-13-2004, 01:17 PM   #18
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Quote:
Originally posted by xtorted-legacy
why not make the wrx flybywire also?
Not sure, I'd guess that Subaru didn't want to redesign the ecu throttle system on the ej20 system when they have so many other changes going on. I would expect it to occur eventually though.
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Old 04-13-2004, 08:16 PM   #19
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I missed the whole plastic manifold discussion - is it better or worse than the aluminum?
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Old 04-13-2004, 09:11 PM   #20
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Quote:
Originally posted by cvalle-sd
I missed the whole plastic manifold discussion - is it better or worse than the aluminum?
search lots of discussion (i asked questions haha)

basic consensus was overall its better for performance , but people dont always like it better (google gm and plastic manifold)
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Old 04-13-2004, 11:49 PM   #21
Kostamojen
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Quote:
Originally posted by cvalle-sd
I missed the whole plastic manifold discussion - is it better or worse than the aluminum?
Well the plastic one was just the same as the old intake mani... The design in this pic is much different, probably has far supperior flow capability.
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Old 04-14-2004, 12:46 AM   #22
ttboy19
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I like the intake manifold. It's not plastic.
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Old 04-14-2004, 10:35 AM   #23
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Looks pretty cool to me. At first glance, the plug wire re-routing threw me for a loop!! Looks much different from my car.

I assume the STi Imprezas will go to this style for '05 too?

-S2-
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Old 04-14-2004, 10:37 AM   #24
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Quote:
Originally posted by RSpeeder
yummy, clean engine bay
Heh... Yeah, stock as it may be, I still drool over the pic of my engine bay that I took the day I purchased the car. (Well, actually Fishguy took it...)


*sigh*
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