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Old 04-13-2006, 10:15 PM   #1
opious
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Default Your Thoughts Please: hybrid build for summer 06!!!

So I have a 99 impreza outback 2.2 that's burning a quart of oil every tank of gas. I've been told by a couple mechanics that their best guess is that it's the piston rings, and that they're allowing gas to mix with the oil and then burning inside the sleeves. I don't know if this is true, but nobody's cracked the block to check. one of my cylinder's has chronicly low compression though.
I'm planing on using the heads and intake from this block since they should be fine and swapping in the shortblock from an 01 ej25 from maddbmxjumper's RS this should bump my compression ratio close to 11:1 give or take a think/thin head gasket.
Now here's the dillema: i've heard great things about advancing the 2.2l cams by sending them to Delta Cams on the west coast. this should give me more power from 2-4k rpms. how many people have done this, and what did you think about it? what's the turn-around time on these cam jobs usually? I don't have a problem messing with the 2.5 block but i'm hesitant to have my 2.2 out of the car for too long because i'm going to need the car because it's my primary mode of transportation.
Also, i could buy the exhaust system from maddbmxjumper as well. is it worth mating the exhaust somewhere around the cat to widen it? (is it even that much wider???) Is there anything else from the ej25 that i should try to get my hands on if i'm only planing on swapping the short block? i think i'm going to use my ej22 flywheel and pressure plate and get a street clutch since i'm sticking with my outback tranny for now.
p.s.- what oil/oil filter should i use once i'm running high compression?
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Old 04-14-2006, 12:14 PM   #2
opious
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anyone? anyone?
bump!
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Old 04-14-2006, 03:31 PM   #3
TypeC
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I don't know much about NA Subarus but seeing as how cheap blocks are, why not just buy a whole EJ25 longblock. They can't be expensive considering a WRX longblock is only $1000. If you can grab one for $400 or so, you can swap that and don't have to have your car down. Then you can sell of your parts and could almost break even.
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Old 04-15-2006, 10:43 AM   #4
opious
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i don't know much about turbo subarus, (and even less about wiring) but one of the things that drew me to this hybrid NA setup was the lack of any kind of change in wiring and the excess of parts that i would have after spending only around $500 - $800 total ($4-500 for block and exhaust, ~$200 for cams, $150 for a street clutch). Word on the street is that a WRX swap can be a headache if you have no wiring experience, and they burn gas faster too.
...This is not to say that one day I won't be doing an STI swap into one of these sexy little wagons, but I'm working with this NA build for now i believe.
Anyone else have any input for me? Is it worth getting the RS exhaust? what about Delta Cams?
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Old 04-15-2006, 08:29 PM   #5
Sko
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completeley new motor... RS longblocks are less than 1k, put in some forged low compression pistons and turbocharge it!! wOOT1

Nick
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Old 04-15-2006, 09:47 PM   #6
ejsportcom
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you should take the ej20 wrx short block i have sitting in my garage and then give me your 2.2 when you pull it.... oh and you should turbo it because when you are not on boost (if you don't drive with a heavy foot) then you get better gas mileage than an NA...
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Old 04-16-2006, 12:25 PM   #7
opious
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so hold on, what are you suggesting now? i take your ej20 sb and use my ej22 heads and throw a turbo on it?
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Old 04-16-2006, 01:08 PM   #8
Matt Monson
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I hardly see this as a built motor discussion... Head over to the NA forum and do a search for "high compression frankenstein". You will get all your questions answered there. I've built the engine in question, in addition to the Ej20 w/Ej22 heads hybrid for boosting. They are both good cheap little builds.

Though I do want to know where these $400 good low mileage Ej25's are. Here in Colorado they are twice that. The $400 ones have blown HG's and often crushed pistons from use as RS-T's...
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Old 04-17-2006, 12:40 AM   #9
opious
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Default

Haven't you built them all, Matt?
I've read the threads. Which would you recommend Mr Monson? I don't have a lot of money, but I can get the NA ej25 for $400-500 (i've been told it's got around 81k on it). i figured i would do the ej25/22 hybrid for the time being until i can afford one day to throw an sti drivetrain in one of these beauties...

I guess I should have been more specific before, but I was also curious about the turn around time at delta cams if anyone has dealt with them lately. as well as the exhaust issue (i only have two exhaust ports and can't afford a custom exhaust, is it worth mating the rs catback to the obs exhaust or should i wait and get a wrx exhaust system?)
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Old 04-17-2006, 01:35 AM   #10
opious
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Default

also, have you ran into cel or emissions problems running the NA setup? what about the ej20/22 turbo swap on an ej22NA ecu?
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Old 04-18-2006, 07:32 PM   #11
opious
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Silver now w/ 20mm rear!P

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anyone? bump!
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Old 04-18-2006, 09:36 PM   #12
Sko
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Exactly what are you looking for? Gobs of power with a turbo? A decent amount of power NA?

Nick
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Old 04-18-2006, 11:29 PM   #13
opious
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99 Impreza OBS WGN
Silver now w/ 20mm rear!P

Default

i like the torquey low-end of the na. I'm really just looking for a decently powerful and cheep build that's going to be reliable for street and highway use as well as the occasional joyride. i stress cheep because i have to keep this project to (hopefully) $700 or lower TOTAL. (note: total does not include beer, pizza, and/or chinese takeout)
What I thought was going to be a simple small-block swap has turned into quite the connundrum.
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