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Old 09-15-2009, 09:25 PM   #1
69subaru360
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Default My EJ22/EJ205 hybrid

This recently happened to my EJ205. A rod bolt broke at the dragstrip and exited out the top of the block. It was just one of those things, I was running a lot of power on the stock engine.




So I thought about it some and decided I really want a V7 or V8 EJ207. I found a few engines I could afford. But then I got to thinking about it and what I really want is a complete swap with 6 speed, brembos, maybe even rhd if I get a halfcut. So I need to save up for a while longer.

I decided to try something I have been thinking about for a while on a temporary basis. A phase 1 EJ22 shortblock with EJ205 wrx heads. When you think about it, the EJ205 shortblock isn't really any better than an old EJ22. It has the same crank, just with #3 thrust, same rods, and cast pistons. The pistons have 14.5 cc dish to them. I'm using 3 layer mls headgaskets for a 99 phase 2 EJ22. The older graphite gaskets are thicker and would lower compression but I am nervous using them with a turbo. I calculate roughly 8.8 to 1 compression with the 49cc EJ205 heads these gaskets.

I got a shortblock from a 93 legacy wagon at a u-pull junkyard for $40. I gave it a good cleaning and started putting it together. Here's where I am at, the head go on tomorrow. If anyone has any reasons why this won't work let me know, it seem like a good plan so far.


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Old 09-16-2009, 09:44 AM   #2
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You don't have to be afraid of the compression much. The phase1 motors of that year you pulled has a compression ratio of 9.5:1. The EJ22E heads of that motor is 40cc. Your WRX heads being 49cc drops the compression a good bunch. The JDM WRX's run 9.0:1CR.

You would just need a retune because of the higher compression. Run your same timing curve, but maybe lower boost 2-3psi. Only thing I worry about is the engine bearing's condition of that old of a motor. I replaced my 170K mile EJ22T bearings with new ones.
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Old 09-16-2009, 05:18 PM   #3
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I'm going to drop a little timing out of it to start with and less boost. I'll put a little back in at a time and see if it likes it. I'm not too worried about the higher compression. I was worried about using the older graphite head gaskets, but I ended up using the newer 2.2 MLS ones. I'm not so worried about the bearings. I don't plan to drive this another 100,000 miles, it's just a temporary thing until I get the engine swap I really want.

It's all assembled now and ready to go in the car tomorrow.

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Old 09-16-2009, 05:26 PM   #4
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So you're running a completely stock ej22(not "t") shortblock with wrx heads and your old 20g? This should be interesting.

That block isn't closed deck, is it?

What kind of header is that?
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Old 09-16-2009, 05:42 PM   #5
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Yes, it's a stock EJ22 shortblock with EJ205 heads. It's an open deck block with cast pistons, just like the EJ205. It's no stronger or weaker than an EJ205, just .2 liter bigger.

It's still a 20G and that is an old gruppe-s header.
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Old 09-16-2009, 10:30 PM   #6
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this is interesting, you could have gone with a phase 2 ej22e block, but non the less i'm interested on how this turns out...
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Old 09-16-2009, 10:56 PM   #7
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I think the $40 part had more to do with his choice than what phase it was. I don't blame him...
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Old 09-17-2009, 06:07 PM   #8
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Quote:
Originally Posted by jason miller View Post
I think the $40 part had more to do with his choice than what phase it was. I don't blame him...
Exactly, plus phase 2 EJ22 is no better than phase 1. Just #5 thrust and some minor differences.
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Old 09-17-2009, 06:11 PM   #9
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Engine is in the car and running. No problems to report it runs fine. It has a little more torque off boost. I haven't run it hard yet, I backed the boost controller all the way off. It's fine at 1 bar boost though. I think I will drive it around for a few weeks on low boost to see how it holds up. If it does break, I'll post back on this thread.




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Old 09-18-2009, 06:42 AM   #10
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do give us your complete impression of this setup.
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Old 09-18-2009, 11:33 PM   #11
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I like it so far. Around town off boost it drives better. It seems to spool the turbo quicker. I did a little logging and tuning. It likes about 3-5 degrees less timing than the 2.0 in the higher loads.
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Old 12-01-2009, 10:50 PM   #12
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Default Hows it going?

Hows this holding up?
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Old 12-01-2009, 11:02 PM   #13
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No problems.
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Old 12-01-2009, 11:12 PM   #14
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how is the powerband compared to the 2.0?
Noticeable tq gain?
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Old 12-01-2009, 11:13 PM   #15
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It spools the turbo faster and has more torque lower in the rpm range.
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Old 12-02-2009, 12:57 AM   #16
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how much boost are you running ?

Any dyno or track times ? Have you raced on it?

Last edited by thorne; 12-02-2009 at 02:12 AM.
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Old 02-02-2010, 10:59 AM   #17
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what's the recent update? I know it's fast.... lolz
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Old 02-02-2010, 11:41 AM   #18
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I sold the car. It was still running great when I sold it. No issues at all.

I get bored with stuff fast. I'm building a 95 coupe with an EJ20G swap now.
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Old 02-02-2010, 12:30 PM   #19
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Very interesting indeed, would have liked to have seen a photo of the open deck in that motor...

-soobaviator
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Old 02-02-2010, 05:08 PM   #20
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Quote:
Originally Posted by soobaviator View Post
Very interesting indeed, would have liked to have seen a photo of the open deck in that motor...

-soobaviator
It looked like every other EJ22. The deck looks the same as an EJ20 as well. It's the same bore as an EJ20 and the sleeves are about the same thickness.
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Old 02-02-2010, 09:11 PM   #21
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Quote:
Originally Posted by 69subaru360 View Post
It looked like every other EJ22. The deck looks the same as an EJ20 as well. It's the same bore as an EJ20 and the sleeves are about the same thickness.
Perhaps I should have been more specific...

Wondering how the cylinder wall thickness stacks up to various EJ20X blocks. Is the block simply an earlier S20C block or does it have the beefy walls of some of the later T and W series blocks. Probably not since the EJ22T went closed deck but I'm still curious to see some measurements...



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Old 02-02-2010, 11:25 PM   #22
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I have... an '03 EJ205, '99 EJ22E, and '06 EJ255. My EJ22T has the heads on them so no measurement.
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Old 02-03-2010, 12:13 AM   #23
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Waiiiiiiiiit.......

This is an NA high() compression block with the WRX heads thats is/was making big power?
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Old 02-04-2010, 05:45 AM   #24
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Quote:
Originally Posted by reddevil View Post
Waiiiiiiiiit.......

This is an NA high() compression block with the WRX heads thats is/was making big power?
It was a complete USDM EJ205 longblock. The rod tossed and blew that hole into the open deck (See top photo and left side where it is marked EJ20 on it). I dunno how the heads were even salvageable. Then he found a $40 2.2NA engine and put it into the car and sold the car (I don't want to even ask if the block was mentioned as being part of the sale since I'm sure the new owner wouldn't be too happy knowing a 2.2NA was in place of a regular WRX block).

Interesting what was said about the cylinders of the USDM EJ205 vs. the NA 2.2L. I thought the 2.2L's had better/thicker walls than the EJ20's.

Last edited by Audioexcels; 02-04-2010 at 06:01 AM.
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Old 02-04-2010, 02:12 PM   #25
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Quote:
Originally Posted by Audioexcels View Post
It was a complete USDM EJ205 longblock. The rod tossed and blew that hole into the open deck (See top photo and left side where it is marked EJ20 on it). I dunno how the heads were even salvageable. Then he found a $40 2.2NA engine and put it into the car and sold the car (I don't want to even ask if the block was mentioned as being part of the sale since I'm sure the new owner wouldn't be too happy knowing a 2.2NA was in place of a regular WRX block).

Interesting what was said about the cylinders of the USDM EJ205 vs. the NA 2.2L. I thought the 2.2L's had better/thicker walls than the EJ20's.
Wow, so quick to jump to conclusions.

The person who bought my car knew what they were getting. If you really want, search on here, craigslist and ebay for my old for sale ads. All of them said it was a 2.2 shortblock. I only sold it a few weeks ago. There was nothing to be unhappy about, it was a good running car. I drove it around 4 months after putting the engine together and had no issues at all. I went to the dragstrip twice with the 2.2. The first time I got a bad tank of gas and it was a wasted trip. The next time it was in the low 30's and I had RE01R summer tires that were like rocks in the cold and just spun. It ran a few mid 12's spinning bad. I did a big burnout to heat them, got it to hook and the exedy stage 1 clutch slipped. I put a 3 puck exedy stage 2 in it but didn't run the car at a track again before I sold it. It think it could have went high 11's. It went a 12.2 with the original 2.0 on a 90 degree day in the summer.

The usdm ej205 isn't some special "turbo" engine. It's an open deck block with the same crank and rods as a 2.2 and cast pistons just like the non turbo engines. Like I wrote above, the 2.2 is no stronger or weaker, just a little bigger.
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