Ej20G head qs

Heads, valves, pistons, rods, crankshaft, etc...

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smh0101
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Location: Orlando, FL

Post by smh0101 »

I'm gonna go out on a limb here...

What do you have to do to get USDM 2.0L WRX heads to mate to a 22t block in a legacy... I mean wiring wise...
~Spencer
94 Legacy Turbo (550 Robtune/ej20h v2 Sti RA drivetrain)
94 Legacy Ti Wagon (5mt ej22e)
91 rhd Legacy GT Wagon (factory 5mt, ej20g)
93 rhd Legacy GT type S2 Sedan (4eat, ej20g)
91 rhd Legacy Ti Type S 1.8
03 Lincoln LS V8 Sport
08 300 SRT8
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PhyrraM
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Location: Lake Elsinore, CA

Post by PhyrraM »

Essentially you would have to convert to WRX wiring or go full standalone.

I believe Doug has played with adapting the older cam sprockets to the newer heads. Don't remember the outcome.

It's widely stated that almost any other widely available DOHC head out flows the USDM WRX heads.
'93 Winestone SS Auto, '91 Pearl White SS.
'93 Pure White SS EJ20G slanty intercooled, SIDESWIPED! In stasis.
'94 FWD and '95 AWD Laguna Blue SVXs.
2017 Pure Red BRZ Limited w/Performance pack
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smh0101
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Post by smh0101 »

Which DOHC setups bolt on and wire up... fairly easily?
~Spencer
94 Legacy Turbo (550 Robtune/ej20h v2 Sti RA drivetrain)
94 Legacy Ti Wagon (5mt ej22e)
91 rhd Legacy GT Wagon (factory 5mt, ej20g)
93 rhd Legacy GT type S2 Sedan (4eat, ej20g)
91 rhd Legacy Ti Type S 1.8
03 Lincoln LS V8 Sport
08 300 SRT8
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PhyrraM
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Posts: 1980
Joined: Thu Aug 11, 2005 4:34 pm
Location: Lake Elsinore, CA

Post by PhyrraM »

We just went over it in another of your threads, or at least a thread you participated in.

EJ20g (Legacy or WRX also called V1 and V2)
Ej20k (WRX, also called V3 and V4)
EJ20h (Legacy twin turbo)
Ej20r (Legacy twin turbo)

And USDM phase1 Ej25 DOHC heads all will work with the stock engine management.

The easiest choice for intake manifold for any of the above heads is an Ej20g. Mainly because the TPS and IAC are compatable with the Ej22t ECU.
'93 Winestone SS Auto, '91 Pearl White SS.
'93 Pure White SS EJ20G slanty intercooled, SIDESWIPED! In stasis.
'94 FWD and '95 AWD Laguna Blue SVXs.
2017 Pure Red BRZ Limited w/Performance pack
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smh0101
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Posts: 3056
Joined: Wed Jan 18, 2006 7:56 am
Location: Orlando, FL

Post by smh0101 »

thanks... i'm sorry, i'm out of it, really friggin tired... i shouldnt even be posting...
~Spencer
94 Legacy Turbo (550 Robtune/ej20h v2 Sti RA drivetrain)
94 Legacy Ti Wagon (5mt ej22e)
91 rhd Legacy GT Wagon (factory 5mt, ej20g)
93 rhd Legacy GT type S2 Sedan (4eat, ej20g)
91 rhd Legacy Ti Type S 1.8
03 Lincoln LS V8 Sport
08 300 SRT8
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s'ko
In Neutral
Posts: 21
Joined: Thu Mar 31, 2005 8:44 pm

Post by s'ko »

So just to clarify this the use of USDM WRX heads. If I get them, then I will need to also have to use WRX wiring to get it to run right.
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smh0101
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Posts: 3056
Joined: Wed Jan 18, 2006 7:56 am
Location: Orlando, FL

Post by smh0101 »

You will need...

heads
intake manifold
timing belt cover
depending upon the year... pedal assembly and throttle body...
The later year USDMs are drive by wire... So that will be a bitch
wiring harness... the ej22t one wont work... which means that you also need the ECU... then blend the wiring into the legacy stuff... Like tach and stuff like that.

It will be a bitch, BUT you could just pull a dash out of a rex and use that!
~Spencer
94 Legacy Turbo (550 Robtune/ej20h v2 Sti RA drivetrain)
94 Legacy Ti Wagon (5mt ej22e)
91 rhd Legacy GT Wagon (factory 5mt, ej20g)
93 rhd Legacy GT type S2 Sedan (4eat, ej20g)
91 rhd Legacy Ti Type S 1.8
03 Lincoln LS V8 Sport
08 300 SRT8
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s'ko
In Neutral
Posts: 21
Joined: Thu Mar 31, 2005 8:44 pm

Post by s'ko »

If I need heads, the harness and ECU and pedals and stuff like that I might as well go with a complete WRX swap.

well time to either look for ej25 heads or do a valve job on the EJ22T and call it done.

BW
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BXSS
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Location: Bx, NY

Post by BXSS »

OR,

you can buy livestrong14's EJ20G motor for $400 find a DOHC intake manifold & slap the motor on your car complete.....

No wiring, no DBW pedal assembly......
94 Legacy SS
96 Impreza OBS
99 Impreza OBS-T
04 Sienna XLE Limited AWD
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Ej22TIM
First Gear
Posts: 137
Joined: Mon Sep 25, 2006 4:50 am
Location: Mound Mn

Post by Ej22TIM »

can anyone verify what kind of intake manifold I have? I posted pics up in this thread I believe, but due to the fact that I am at work, I cant see the pics lol.

I am about 75 percent sure I have ej20r heads, but I am unsure about my intake manifold. what intake manifolds work with the factory legacy ecu?
and does anyone have a 20g intake manifold for sale if mine isnt 20g?
Tim
93 Legacy SS Winestone 5mt swapped
Megan Racing Bellmouth 13psi
WRX Intercooler and Hoodscoop
JDM ej20G DOHC head swap, wiseco pistons and td04 in the making.
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Ej22TIM
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Posts: 137
Joined: Mon Sep 25, 2006 4:50 am
Location: Mound Mn

Post by Ej22TIM »

BUMP for intake manifold identification.
Tim
93 Legacy SS Winestone 5mt swapped
Megan Racing Bellmouth 13psi
WRX Intercooler and Hoodscoop
JDM ej20G DOHC head swap, wiseco pistons and td04 in the making.
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93forestpearl
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Posts: 3043
Joined: Tue Jan 25, 2005 9:14 pm
Location: Twin Cities, MN

Post by 93forestpearl »

No pics Tim.
→Dan

piddster34 at h0tma1l d0t c0m
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Ej22TIM
First Gear
Posts: 137
Joined: Mon Sep 25, 2006 4:50 am
Location: Mound Mn

Post by Ej22TIM »

http://bbs.legacycentral.org/viewtopic. ... highlight=

there are pics of the intake manifold in this thread.

sorry.

I just need to know what intake manifold I have, nobody is certain and if its not 20g I will start looking for one because from what I understand they are the most plug and play friendly.
Tim
93 Legacy SS Winestone 5mt swapped
Megan Racing Bellmouth 13psi
WRX Intercooler and Hoodscoop
JDM ej20G DOHC head swap, wiseco pistons and td04 in the making.
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Ej22TIM
First Gear
Posts: 137
Joined: Mon Sep 25, 2006 4:50 am
Location: Mound Mn

Post by Ej22TIM »

JDM V1 valve cover gaskets

US Part Number: 13272AA063

Spark Plug Gasket:

US Part Number: 13293AA030
Tim
93 Legacy SS Winestone 5mt swapped
Megan Racing Bellmouth 13psi
WRX Intercooler and Hoodscoop
JDM ej20G DOHC head swap, wiseco pistons and td04 in the making.
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All_talk
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Joined: Thu Dec 30, 2004 5:14 pm
Location: Thorp (Ellensburg), WA
Contact:
Contact All_talk

Post by All_talk »

looks like Legacy (not WRX) EJ20G to me.

Here is my current swap, JDM EJ20G, looks just like it.

Image

I also have this manifold I'm going to use on my 2.35 stroker, I know is a EJ20?, maybe K or H. Note it has extra mounting bosses around the plenum. I'm hoping to use them to mount my coil pack.

Image

BTW, the heads you show in the other thread look like '96 EJ25 DOHC heads with the hydraulic buckets. But the JDM H, K or R heads might look the same. Check my post in this thread for a little more info.

http://bbs.legacycentral.org/viewtopic. ... dohc+heads


Gary
No matter how broke I am... I always seem to find two cents.
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