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Old 11-26-2007, 11:38 PM   #1
rockethound
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Member#: 17390
Join Date: Apr 2002
Chapter/Region: NWIC
Location: Mount Vernon WA
Vehicle:
1992 Legacy Turbo
silver

Question ej22t rebuild with ej20g heads/intake

Hi,
I've checked the archives here and on Legacy Central till my eyes hurt and I can't seem to find what I'm looking for. I find a lot of posts regarding the ej20g/ej22t combos but no complete build threads, so here's my question:
I'm getting ready to rebuild my ej22t and I'd like it to put out some decent reliable power and still get decent gas mileage. I'm currently looking at a complete head/intake changeover set from an ej20g (heads,intake, cams/gears/covers). It looks like it has a set of the gray top injectors and shim under bucket cam followers. Would I be looking at a potential big increase in power and an easy swap using the 22t parts or a pain in the arse by rebuilding the engine with this setup or should I stay with the original ej22t heads/intake. Either way, I'd have the heads ported/polished. My immediate goal is to get it back to running status but long term is to set it up so I can do more mods in stages without having to backtrack on what was already done.

Your experienced input is appreciated.

Thanks,
Jeff
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Old 11-27-2007, 12:28 AM   #2
ballitch
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98 cam'd EJ251
Wrx Tranny,slowr than ish

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scrap the ej22t heads, they arent beter than the ej20g's but you will have to work out the cam sensor details so you can use the dohc heads on your sohc car. if i were you, i would try to find sohc ej25 heads and intake, but i dont like messing around with dohc motor in sohc car...so im biased. when you're rebuilding the motor, make sure to double check your torque numbers.

Also, the grey rtv sealant (rated to like 450*) works great. use that to make your oil pump and oil pan gaskets. its a good idea to replace your water pump.

~Josh~
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Old 11-27-2007, 02:13 AM   #3
reddevil
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1990 Legacy wagon
goes 12.387 @ 116.5

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The heads are great. They will work PlugNPlay "AS LONG AS YOU HAVE" the correct cam gear. If the heads do not come with cam gears, you CANNOT swap the ej22t gear onto them. You need a head specific gear.

And injectors? You will lose some MPG, but the ECU should learn "some".

Do it.
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Old 11-27-2007, 08:01 AM   #4
Marnix
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You will need metal phase I cam gear or the resin phase I cam gear from one of the following vehicles:

MY89-92 Legacy Turbo JDM
MY92-98 Impreza WRX JDM
MY96-98 Legacy/Outback EJ25D JDM or USDM
MY97-98 Impreza RS DOHC USDM

I've done the swap from SOHC to DOHC number of times. Just swap the wiring harness of the SOHC manifold onto the DOHC manifold and it should work. Maybe you will have to compensate for the bigger injectors though, or fit the SOHC rails and injectors to the DOHC manifold.
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Old 05-15-2008, 07:33 PM   #5
Ej22Tim
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can someone post pics of the cam gears that are needed to work on a 22t? I have black alum ones for my heads that are going on my 22t......
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Old 05-18-2008, 09:02 PM   #6
willyp
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white/black/silver

Cool use the money else were in the car

can any of you guys tell me what the power/torque increase from the 2.0/2.2 is? And why jeff would be interested in spending all the time and money in this swap to loose mpg and reliability not to mention the wiring problems he is going to run into in the early legacy. if you want to get the car up and running solid rebuild the orig motor and spend the money in the machine shop port your heads intake have it balanced and do all the stuff you would do on a proper rebuild. Than when you need parts you know what you have. Than intercool it build yourself a down pipe add a mbc a good ign with timing retard and fuel burn ratio and you will have a stout legacy. The 2.2 has it all over the 2.0 with torque and with the weight of your car you need that to get it moving that is what wins races and helps with mpg not having to shift all the time. let me know if you need any help. BILL

Last edited by willyp; 05-20-2008 at 12:12 AM.
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Old 05-19-2008, 06:28 PM   #7
Ej22Tim
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I spent less on these heads/intake manifold/injectors/throttle body/head gaskets/intake gaskets/timing belt covers and arp head studs than it would have cost me to get my stock heads worked on fyi.

the car has a wrx intercooler and had a mbc, now after I put on the heads it will be running a vf39 on stock boost with full headers and catless uppipe/downpipe with 440s. and after its broken in I will run a d tec mbc/ fcd. I am hoping to run with stg 2 wrxs.

think that a realistic build/ wanted outcome?
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Old 05-19-2008, 09:53 PM   #8
willyp
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Default fyi !!!! BS

Just the head set alone is as much as any shop should charge for a valve job and cleaning up the heads and as far as porting it is done by the hour and they are alum and very easy to do. good luck with the cam sensors and injectors and on and on.
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Old 05-29-2008, 02:39 PM   #9
All_talk
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I would recommend the ‘97+ Phase I EJ25 DOHC heads they have a 46cc and yield a better compression ratio with stock EJ22T pistons. The EJ20G heads have a 56cc chamber (some wrx/sti version may differ) which makes for a very low CR, they can make good power with more boost, but off boost power and mileage will suffer.

The standard plastic DOHC cam gears are said to work with the EJ22T sensor. I haven’t finished my build so I cant verify that yet, Maybe reddevil can comment. And like reddevil said, the position of the sensor mount and the position of the timing pucks on the gear are relative, use the gears that go with the heads.

I am currently running an EJ20G swap in my ’91 Turbo Legacy with the stock EJ22T ECU and the grey top 440cc injectors, closed loop idle and cruise trimmed in fine, open loop is a bit rich. If you keep the boost at about 12psi or so the 370cc EJ22T pink tops will keep up and the mileage will improve.

Gary
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Old 05-29-2008, 11:09 PM   #10
Arctic Assassian
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Quote:
Originally Posted by willyp View Post
Just the head set alone is as much as any shop should charge for a valve job and cleaning up the heads and as far as porting it is done by the hour and they are alum and very easy to do. good luck with the cam sensors and injectors and on and on.
You should learn more.

Last edited by Arctic Assassian; 05-30-2008 at 01:56 AM. Reason: 1st clowning. 2nd empathy
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Old 06-03-2008, 01:48 AM   #11
NICO TURBINE
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^^ LOL WORD!!!


as for the poster on the topic

http://bbs.legacycentral.org/viewtop...459&highlight=
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