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#101 |
Scooby Specialist
Member#: 66934
Join Date: Jul 2004
Chapter/Region:
NWIC
Location: Seattle WA
Vehicle:2004 JBP FXT 2002 cammed OBS - RIP |
![]() hey kyle...
this sounds pretty interesting. I'm running a phase 2 ej25 in my obs, with EL header scoming soon. I want to get a set of deltas in late febuary, and i'f i'm pulling things apart, upping the CR with heads too would be pretty cool. My questions lie along kyles (maybe we'll do them together?). SUBSCRIBE
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#102 |
Scooby Guru
Member#: 64673
Join Date: Jun 2004
Chapter/Region:
NWIC
Location: portland
Vehicle:1990 Legacy wagon goes 12.387 @ 116.5 |
![]() Matt, I did say "old" and "years of use".........But how about "10 years or older!"
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#103 |
Scooby Newbie
Member#: 73416
Join Date: Oct 2004
Location: PA
Vehicle:05 CTS-v Stealth Grey |
![]() Anyone ever tried a partial block fill on a ej25, I'm theorizing that it would take care of a lot of strength problems with the block. I've heard one of the biggest causes for problems with this block is the cylendar walls can actually move or shift causing the head to blow (let me know if I was informed wrong). So I thought that a partial fill should add a lot of strength and still allow for enough cooling for high compression,nitrous, or turbo build ups. Any thoughts?
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#104 | |
Scooby Guru
Member#: 5218
Join Date: Mar 2001
Chapter/Region:
MWSOC
Location: SAUL'S Motorsports
Vehicle:96L Most Over- Developed Beater |
![]() Uh....since it fills up the coolant passages....it's probably not a good idea for a streetcar.
Quote:
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#105 |
Scooby Newbie
Member#: 73416
Join Date: Oct 2004
Location: PA
Vehicle:05 CTS-v Stealth Grey |
![]() That is why I was thinking a partial fill, Like a quarter the way up. I know tons of lt1 guys who have done a partial fill and a high volume water pump with a nice radiator and actually ran cooler.
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#106 |
Scooby Guru
Member#: 832
Join Date: Jan 2000
Chapter/Region:
RMIC
Location: Teh Ghetto Garage, CO
Vehicle:99 2.5RS, '85 911 '73 914 and 2012 BRZ |
![]() There's not a whole lot of prep required to make one of these EJ22/EJ25 hybrids. The phase I vs phase II EJ22 heads thing has been argued for years around here. We used the phase I because that is what we had. They were the NA heads. The Turbo ones actually have a slightly smaller exhaust valve size and won't flow as well. But the phase I heads are dual port and let you bolt up Cobb, TWE or the other high end headers. For the single port phase II head, you could only use the Borla single port version.
We did nothing to the bottom end. Use a phase II if you can get it. Use the new four layer OEM EJ25 head gasket. With the phase I EJ22 heads, you are in the 11.5:1 CR range with this set up. We use 91 octane here because it is as high as we can get. All the sensors on the bottom end plug right in to the harness. You use your stock manifold and manifold wiring harness. We did nothing with the ECU. One of the points of this swap is hp per $$$. It is a ghetto garage build. If you are gonna spend the money on EM, then spend the money on a built EJ25. We are using a torque chip. It helps down low. We bailed on the chipped ECU becuase it didn't like the torque chip. You could use an AFC if you wanted to play a little bit. But that's $200 more invested. Gas mileage is in the low 20's. If you don't drive like you stole it, probably mid 20's would happen daily. I think that about covers it, for now... |
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#107 |
Scooby Newbie
Member#: 64528
Join Date: Jun 2004
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![]() Matt, anyone used wet nitrous on these 11:1 hybrids ?
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#108 | |
Scooby Guru
Member#: 17439
Join Date: Apr 2002
Chapter/Region:
Tri-State
Location: Yardley, PA
Vehicle:2010 WRX STI SE Gray |
![]() Quote:
![]() Well, with the answers that Matt provided here and in other threads, and in combination what I've been piecing together, I, too, am looking to "build up" this ghetto frankenstein and try to keep it as low buck as possible. I figure I might try and get the delta cams at the same time since the engine will be out anyway, but otherwise, basically just apples to apples with a different block as far as it looks. THANKS A TON! ![]() |
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#109 | |
Scooby Guru
Member#: 832
Join Date: Jan 2000
Chapter/Region:
RMIC
Location: Teh Ghetto Garage, CO
Vehicle:99 2.5RS, '85 911 '73 914 and 2012 BRZ |
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#110 |
Scooby Guru
Member#: 49881
Join Date: Dec 2003
Chapter/Region:
South East
Location: Knoxville, TN
Vehicle:2006 Subaru STi 1989 BMW 325is |
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#111 |
Scooby Newbie
Member#: 26201
Join Date: Oct 2002
Chapter/Region:
South East
Location: Somerset, KY
Vehicle:2015 Impreza Premium Charcoal |
![]() I'll most likely be doing this too.
for my MY00 RS, as it broke a timing belt, and since I'll have the heads off...and have a set of EJ22 NA stage I heads laying around, I'll throw them on it, hopefully it'll be a nice up in HP. Huck |
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#112 | |
Scooby Guru
Member#: 832
Join Date: Jan 2000
Chapter/Region:
RMIC
Location: Teh Ghetto Garage, CO
Vehicle:99 2.5RS, '85 911 '73 914 and 2012 BRZ |
![]() Quote:
Ah, this changes my opinion. Why would you use the EJ22 heads if your EJ25 heads are good? Use a thin .027 hg like I did and bump the CR on your EJ25. The EJ22 heads are a down grade. But if your EJ25 heads have bent valves, then it would be a good cheap option. Get the Delta cams while they are out. But remember, you are going to need an EJ22E manifold to make this bolt up. If you need a manifold, pm me. I will sell you one for cheap. And if your heads are borked, I may be interested in picking them up for rebuilding if you will let them go cheap. Lastly, We are doing to R&D this weekend and plugging in the EJ22 ECU to the car. We want to see what differences we notice between the two. We will also have it on the dyno next month and will likely run it with both the 1.8 ECU and the 2.2... |
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#113 |
Scooby Newbie
Member#: 26201
Join Date: Oct 2002
Chapter/Region:
South East
Location: Somerset, KY
Vehicle:2015 Impreza Premium Charcoal |
![]() I haven't torn into it yet, but assume the valves are bent.
I just bought the car (wrecked) and the rad is pushed into the t-belt. If I'm really lucky (which I usually am not) maybe a new t-belt will be all it needs, but I'd put money on some bent valves, and I'm looking ahead for my options. And as I have a whole 92 MY EJ22 with a bottom end knock sitting in my garage, I can rob it to fix the 2.5, or at least it sounds like I can from what I've read in this thread. It's my 20th Subaru, but have been mostly earlier EJ22's EJ18's and EG33's, EJ27's which are all non-interferance motors, so this will be something new for me. But I have hope now anyways, Thanks, Huck The originator of the SVX 5-speed swap ![]() |
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#114 |
Scooby Newbie
Member#: 26201
Join Date: Oct 2002
Chapter/Region:
South East
Location: Somerset, KY
Vehicle:2015 Impreza Premium Charcoal |
![]() Another quick question....
will I be able to run the 2.5 cams, and roller rockers in the EJ22 heads? Huck |
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#115 | |
Scooby Guru
Member#: 832
Join Date: Jan 2000
Chapter/Region:
RMIC
Location: Teh Ghetto Garage, CO
Vehicle:99 2.5RS, '85 911 '73 914 and 2012 BRZ |
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#116 |
Scooby Guru
Member#: 17439
Join Date: Apr 2002
Chapter/Region:
Tri-State
Location: Yardley, PA
Vehicle:2010 WRX STI SE Gray |
![]() EJ22E manifold - You're referring to intake manifold, correct? They are virtually the same all the way up through the 2.2L lifecycle from 94ish - 00+ are they not?
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#117 | |
Scooby Guru
Member#: 832
Join Date: Jan 2000
Chapter/Region:
RMIC
Location: Teh Ghetto Garage, CO
Vehicle:99 2.5RS, '85 911 '73 914 and 2012 BRZ |
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#118 | |
Scooby Newbie
Member#: 26201
Join Date: Oct 2002
Chapter/Region:
South East
Location: Somerset, KY
Vehicle:2015 Impreza Premium Charcoal |
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#119 | ||
Scooby Guru
Member#: 17439
Join Date: Apr 2002
Chapter/Region:
Tri-State
Location: Yardley, PA
Vehicle:2010 WRX STI SE Gray |
![]() Quote:
Matt, I think you might have a type-o which is causing confusion (or I'm just an idiot when it comes to the naming of the manifolds...) You write: Quote:
![]() ----------------------------------- FINAL EDIT: OK OK OK - I see what you were saying. You were saying to the guy if his valves are bent and his heads are toast and he DECIDED to go with the EJ22 heads (which you recommended against if his EJ25 heads are still good, which makes sense) then he would need the corresponding EJ22 manifold. So class, in conclusion, the intake manifold needs to mate to your heads. EJ25 heads = EJ25 intake manifold EJ22 heads = EJ22 intake manifold REGARDLESS of what block you go with. PHEW! Sorry for the momentary retardedness -Cirrus "Master of the Obvious and Poor Reading Comprehension" |
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#120 |
Scooby Guru
Member#: 832
Join Date: Jan 2000
Chapter/Region:
RMIC
Location: Teh Ghetto Garage, CO
Vehicle:99 2.5RS, '85 911 '73 914 and 2012 BRZ |
![]() you got it.
-matt "master of the run-on thought"... |
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#121 |
Scooby Newbie
Member#: 64528
Join Date: Jun 2004
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![]() Bump--
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#122 | |
Street Racing Instructor
Moderator Member#: 110
Join Date: Jul 1999
Location: 1997 OBS, 1996 SVX, 1988 RX
Vehicle:1989 1989 XT6 |
![]() Quote:
Hey Matt! What is the part# for the headgasket you are referring to that is in bold above? Installing this gasket on my single (Siamesed) exhaust port 2.2ltr Outback Sport will yield an 11.5:1 compression ratio eh? Man.....got my head spinning. So I can simply purchase this headgasket, take it to the dealership and they could install it without issue as if it was the stock headgasket? ![]() |
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#123 |
Scooby Newbie
Member#: 26201
Join Date: Oct 2002
Chapter/Region:
South East
Location: Somerset, KY
Vehicle:2015 Impreza Premium Charcoal |
![]() Kevin,
The gaskets won't up your compression on your EJ22, it only ups the compression when you use EJ22 heads on the EJ25 block....its not the gaskets that bump it up...it's the heads, I think he's saying to use those gaskets as they hold up the best... Huck |
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#124 | |
Street Racing Instructor
Moderator Member#: 110
Join Date: Jul 1999
Location: 1997 OBS, 1996 SVX, 1988 RX
Vehicle:1989 1989 XT6 |
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#125 |
Scooby Guru
Member#: 832
Join Date: Jan 2000
Chapter/Region:
RMIC
Location: Teh Ghetto Garage, CO
Vehicle:99 2.5RS, '85 911 '73 914 and 2012 BRZ |
![]() yeah Kevin,
Hukc hit the nail on the head. Now, Cometic might make a thinner than stock HG that would let you do something like what I have done on my 2.5RS. It might be worth pursuing for some cheap power. And don't pay the dealership for that job. It is a weekend job that just requires a certain amount of attention to detail. But it is not hard... |
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