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Old 12-08-2003, 12:27 PM   #1
masiolli
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Default ej22t in MY99 RS

currently im running a minnam stage two turbo, minnam up/down pipes, remote oil filter, safc, sitc, J&S safeguard... my engine is slowly going down hill and in order to get it back to par, i would have to sink $800 into getting it fixed (oil leaks galor, and the vac/boost lines need replaced) and tuned.

I recently stumbled across an ej22t from a legacy in a junk yard. Its complete and they want $600 for it.

My question is... if this motor is in good shape, and i swap it in my car.. i would get rid of the safc and sitc and just get a complete engine management like the LINK ecu.. my question being.. if i get the ECU, will i still have to hack the wiring harnesses together?

How hard would this swap be? Im looking to keep the costs down mainly because the majority of the money being spent will be from the selling of my turbo kit, and electronics.. and then my ej25 along with some cash i have saved... (just a few hundred).

do you think this is possible?
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Old 12-08-2003, 02:21 PM   #2
stimpy
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What you will want to do is dismantle the EJ22T you acquire and just install the shortblock itself. You then retain everything RS except the block. No wiring messes; simple.

-Jon
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Old 12-08-2003, 06:41 PM   #3
masiolli
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would this be an improvement? So all i really need is the block itself? what about the intake manafold and things like that.. heads... all that stuff bolts in from the ej25? what are the benefits of just swaping out the block? Also, i'm assuming you mean all the internals come with the new block (pistons, crank...) Correct?

if i did this would i HAVE to get a link+? or would the ej25 ecu handle it?

How much boost would this set up handle? how much power can it produce... and has anyone here done it? if so, what are your opinions on it?
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Old 12-08-2003, 07:12 PM   #4
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Read this thread completely.
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Old 12-08-2003, 08:33 PM   #5
masiolli
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wow, that was a very informative post... one more question though... did the 99 rs come with DOHC?

if so, theoretically, i could buy this ej22t from the junkyard (its complete), swap blocks, and use everything else in my RS (minnam stage 2, WRX injectors, WRX fuel pump, safc, sitc, safeguard, head, and tranny. I would also have the oil pump and all that goodness to swap in... then i could sell the extra stuff and have a better more reliable engine for a few hundred (unless i get the LINK).

Am i wrong in anything i said?
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Old 12-08-2003, 09:08 PM   #6
masiolli
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OK, i just found that the 99 comes with SOHC... damnit...

would i have to do some wiring harness hacking if i were to switch to the 98 DOHC?

I COULD use the 99 SOHC correct? i know it wouldnt flow as well, but it would still work right?

EDIT: I see your using the SOHC wedge... what is your take on it?
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Old 12-09-2003, 12:27 AM   #7
masiolli
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can anyone confirm this?
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Old 12-09-2003, 01:47 AM   #8
sime
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Yes putting in DOHC would require wiring. lots of people are using the sohc heads. I would stay with them not worth the hassle of putting in dohc. In another ej22t swap thread into an rs someone posted cobb's graph of a stock sohc head and it flowed more then a stock WRX head. Some mods I think should pay some more attention to this topic of ej22t into rs and make some good stickies.
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Old 12-09-2003, 07:59 AM   #9
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masiolli: My engine is being put back together at this moment. It (SOHC heads) will bolt on the EJ22T shortblock without a problem. Go here to read more on the swap.
Check out my website for some pics.
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Old 12-09-2003, 10:02 AM   #10
masiolli
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why did you take your engine apart? did something go wrong?

Also, on that site, it said the ej22t block with ej25 SOHC has a compression ratio of 7.7:1... was this with the SOHC head gasket? could i get a little higher compression with a different head gasket? I would like to be around 8:1. Or would the 7.7:1 be better... i know its safer, but im worried about the loss in bottom end power..
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Old 12-09-2003, 10:28 AM   #11
Wedge
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The reason I took the engine apart was to freshen it up. It came off of a 150k mile 91 Legacy Turbo. I went oversized a bit on pistons, and had custom forged ones made.

Correct, if you use the SOHC head gasket, you get a compression ratio of 7.7:1. Which is a bit low for my taste, so I decided to order 8.5:1 pistons, so in reality I'll be around 8.2/8.3:1.
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Old 12-09-2003, 10:30 AM   #12
masiolli
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would using the DOHC gasket make a difference?

or is there anything short of pistons that can be used to raise it a little..
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Old 12-09-2003, 11:15 AM   #13
Wedge
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DOHC will produce 7.2:1
Look back at that WAC EJCALC site.
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Old 12-09-2003, 11:39 AM   #14
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darn...

and if you dont mind me asking... what tranny are you using? are you using the RS 5-sp? If the engine im looking at comes with a manual tranny, would i be better off swapping trannies as well? if i were to do this, would i have to change or wire anything (drive shafts, shift linkage...)?

If you are using the RS tranny, how is it holding up? how much HP/TQ do you think your putting out?

thanks a lot for the help so far.. if i actually do this swap soon, expect some more questions
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Old 12-09-2003, 04:05 PM   #15
Wedge
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Yes! If you plan on passing 300hp, (or tq in reality), then you will need a beefier tranny.
I'm planning on some Type R/RA gears in the future.

Tranny has held up fine for about 6months of boost. But I have a feeling once I get this thing back together, I'll be needing one soon!
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Old 12-09-2003, 09:36 PM   #16
masiolli
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are you useing the stock RS one?

im not sure if this motor comes with a tranny as well.. but if it does, it'll be a pull-type since its from a turbo car... correct? would i be better off swapping this in along with the block? if i were to do this as well... what all would have to be done? any wiring?
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Old 12-10-2003, 11:09 AM   #17
Wedge
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Stock one.
Just use your RS tranny in the meantime.
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Old 12-10-2003, 09:30 PM   #18
masiolli
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one more question... right now im using a WRX fuel pump and WRX injectors... are those going to be good enough?
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Old 12-11-2003, 11:53 PM   #19
masiolli
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and also, would i be able to run it for a while on my rs25 ECU with the j&S, safc, sitc, and knock link? just untill i can get my ecu (a month or two hopefully)
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Old 12-12-2003, 04:49 PM   #20
Wedge
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Yes, that fuel setup should suffice. Just don't get boost crazy all of a sudden.

As for the ECU, personally I would wait till I have the money for a standalone, and do everything at once. One screwup can cost your engine, and that means pulling everything back out again.
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Old 12-12-2003, 05:43 PM   #21
masiolli
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what engine management are you running?

would the LINK for the RS work?

which would you recommend the LINK, TEC II, or TEC III?
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Old 12-14-2003, 07:41 PM   #22
Wedge
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I'm running a LINK+. 2 reasons I got it, because it was one if the cheapest solutions, and because there are so many people out there running it you can get different MAPs to start out with.

Yes, the LINK for the RS will work just fine.
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Old 12-19-2003, 12:09 PM   #23
masiolli
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another question...

are you using stiffer valve springs? if so where did you get them? are they STI valve springs or aftermarket?
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Old 12-19-2003, 04:16 PM   #24
Wedge
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Go here to view all the mods on my car with explanations.
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Old 12-20-2003, 05:47 PM   #25
masiolli
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wow... thanks a lot for that! help a bunch!

thanks again!
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