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Old 02-06-2013, 12:15 PM   #1
bigolrig
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EG33 Swapped 2 dr RS

Default Benji B's EG33 Swap Thread!

Hi there Nasioc! I am benji! I am 21 and a long time forum lurker but have not made many threads. I created this thread to document my EG33 swap into my Impreza L. I bought my red 1995 impreza L 2 door with a 1.8 L from my buddy Cody for $300. It had spun a bearing and the engine seized. I pulled the engine out, gutted most of the unnecessary parts behind interior pieces, removed the rear seat, A/C, System, and the SRS system and gave it a good scrubbing.

I went through several ideas with the car such as putting a stock 1.8L in it and having the car as a farm car/ thrash car for my woods but i decided it was just too nice of a shell and too light of a subaru to destroy.I have a 2002 bugeye wagon with a built bottom end, Evo3 16g turbo, sti injectors, Walbro, Cobb intake, turbo inlet, bcs, Koyo radiator and Tein super street coilovers so i decided i did not want two of the same engine. I would have liked an sti swap but it is just out of my price range. I am a huge subie nut so i was looking at my options on the forums and saw people have successfully swapped an EG33 out of an svx and for some reason it really grabbed my attention... The EG is ALMOST twice as big as the L's engine was, it has a good powerband, low end torque,no boost leaks to deal with was probably it.It is also a unique swap that not too many people have and it sounds like a freakin' Porsche! I also feel fortunate that people have posted enough info on the forums that I felt i could figure out the wiring one way or another (fingers crossed).I then ended up deciding to do the 6cyl swap! So i looked around on craigslist and the forums for an svx I could tear apart sorry purists!!

I found a 1992 OBD1 maroon svx with 106k miles on craigslist. The car had been put into a ditch on the passenger side. The front and rear quarters were banged up pretty good, and the passengers rear suspension is all twisted. Other than that it is a solid clean car. when My father, brother and I wentto pick it up the owners stated it and it started right up with no CEL's! I was expecting it to be a pretty rough car but it was not! So i picked it up for $775. The owner lifter the back up with a bobcat with a forklift attachment up on to the trailer..it was interesting to say the least but it was our only option unless I suddently gained the strength of hercules and threw it up on to the trailer. So we strapped it down to the trailer and pulled the 3 three wheeled sled back to my shop in Mansfield about 2 hours away. Getting the car off the trailer was very interesting with the back wheel missing since my car trailer has two ramps on the back just wide enough fo a tire. So with my dad, brother, a floor jack, and a wheel dolly we sketchily wheeled the beast into its new home. After I got it placed where i wanted in my shop I quickly dug in and started unhooking and marking all the wires and connections so i could pull the engine. It took me 3 days on and off to get the motor out. What a task that was compared to the 1.8L in the L. The block and transmission were seized together pretty darn good!

So now i have the engine out, all the accessories off except the intake manifold. I am at the point where i can start cleaning, sandblasting and restoring parts off of my EG. So excited! I will be posting pictures of my progress here once photobucket lets me upload pictures.

Have put in tons of hours researching what it takes to do this swap, like so many hours on the forums you might think i am some what crazed. But i want to know the different ways people have done this swap. The only thing i am worried about the wiring, but once i have the pinouts, diagrams, and the harnesses in front of me it will make a lot more sense. I can fab up a way to mount the radiator it is just a matter of doing it. I think i might try to use the stock SVX radiator and make a tubular radiator support to hold it but i am not 100% on it. I may get a griffin radiator from summit. Suggestions on this? I would like to put the thermostat in the top radiator hose and convert everything to 50mm hoses to reduce coolant temps and cavitation. I will most likely make ducting for my radiator and oil cooler. I will be using the stock impreza L transmission and a stock wrx clutch ( if it works). I know I might kill the tranny but i will see how long it lasts than upgrade from there.
I will use the stock ecu for now but I may run a Megasquirt 3 in the future once I am comfortable with the car and wiring. It seems like a great engine management system and it has a lot of options like launch control, flat foot shifting, boost control, nitrous control, the whole works at an affordable price. It has also has a pretty big following behind it.

I am going to use this car as a street car to rip around it and have fun on the weekends, the drag strip, auto-x, car shows and stuff like that. It is just for fun and to experiment with. I am just a college student so I do not have a huge budget so I am going to piece it together slowly add new parts to it when i feel like it needs upgraded. Eventually I would like to build the engine and add boost but it will be a while before that ever happens. It is not going to be an easy process but from the videos I have watched and the threads I have read to I am sure I will have a fun and unique end product!


Here are some pics!
My L on the lift

Pulled the engine out

Engine out

me looking for something with the engine all torn apart under my L

These are the pics the owner put of of the SVX on Craigslist


Teh EG33, pretty clean minus the power steering pump was leaking

Here is a pic of my EVO III 16g wrx wagon with a built motor, tein coilovers, 17x9 Work Emotion CR Kai 's and many more mods


Here are links of websites/threads that have helped me. I will continue to update this as i go on. This is not all of the threads I have read but I will post them as I remember. Feel free to post a link and I will add it to the first page for future swappers! I If you have any issues with that I will remove your link off my page if you would like.

Awesome SVX Forumhttp://www.subaru-svx.net/forum
Big H6 Swap Thread on RS25 http://www.rs25.com/forums/f128/t843...ap-thread.html ( Thanks Patrick Olsen)

Nasioc H6 Resource Thread http://forums.nasioc.com/forums/show....php?t=1323800

One of my favorite threads right here. basically my inspiration for my build. I may build my heads like his eventually http://forums.nasioc.com/forums/showthread.php?t=911106

Another good EG swap thread: http://bbs.legacycentral.org/viewtopic.php?f=25&t=48522

Link to full 1992 SVX wiring harness: http://http://phantomotaku.com/SVX/M...ng_diagram.pdf

This thread has some good info: http://www.rs25.com/forums/f128/t178...w-driving.html

How to:Wiring an EG33 into a GC: http://www.rs25.com/forums/f128/t146...o-your-gc.html

Wiring Harness help: http://www.boxerswaps.com/subaru-van...subaru-harness
Thanks for checking out my thread! This should be interesting...
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Last edited by bigolrig; 02-19-2013 at 07:41 PM.
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Old 02-06-2013, 05:43 PM   #2
2006eg33
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always good to see another h6 swap

i run my eg33 computer as a standalone, and use the stock computer to run everything else.
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Old 02-13-2013, 01:03 PM   #3
bigolrig
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EG33 Swapped 2 dr RS

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added pics
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Old 02-14-2013, 10:45 AM   #4
Patrick Olsen
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You said you've done lots of research, so you've most likely already found it, but there's a big H6 thread over on RS25.com with lots of good info (albeit with lots of worthless chatter, name-calling, etc mixed in). For whatever reason, the big H6 thread in this forum has more EZ30 info, while the H6 thread over on RS25 is almost all EG33 info.
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Old 02-16-2013, 09:46 AM   #5
bigolrig
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Yes, I have read it, but thank you anyways! I love reading your threads.
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Old 02-16-2013, 10:05 AM   #6
bigolrig
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I got the dash and wiring harness out of the SVX Yesterday. It took me a day and a half on and off to remove it . That was the part i was worried about most on the SVX side. It seems like it was not meant to be take apart or to make us owners fussy

I now have the EG stripped down minus the fuel injector stacks, sensors, coolant cross over tube, and the oil pan. I am going to stars cleaning up parts and sandblasting the parts that can be sandblasted and prepped so I can paint.

Warm weather is now allowing me to work in my shop somewhat comfortably now. I had to put an electric heater in my SVX while I was pulling out the dash Does anyone have a link or picture of an SVX ECU pinout? I forget what page I saw it on and cannot find it.

P.s. Buy some SVX and L parts from me!

Last edited by bigolrig; 02-16-2013 at 12:00 PM.
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Old 02-17-2013, 03:08 PM   #7
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It might have already been stated, but is that Impreza a manual or an automatic?

If it's a manual, what on the EG33 is going to need modification, considering the SVX was only offered with the 4EAT?
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Old 02-17-2013, 08:54 PM   #8
Hondaslayer
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Nice looking splitty with safari windows back there
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Old 02-18-2013, 12:02 PM   #9
bigolrig
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EG33 Swapped 2 dr RS

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to TurboLag23: the impreza has the stock 5 speed and an EG33 will bolt up to almost any transmission I can remember. 5 speeds and 6 speeds. Not to sure on AT's though...

Hondaslayer: thanks! the cars you see in my pics are my dads projects. He has tons of old school muscle cars and vee dubs that he is working on. I have a 73 super beetle that I am turning into a dumped fenderless rat rod too
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Old 02-18-2013, 12:06 PM   #10
bigolrig
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Does anyone know what wires I need to keep on my harness so i can run my ecu as a stand alone? I am not 100% positive and it is easier to ask then add it back into my harness. I don't need the pin #'s just the name of the systems. I do not want egr, evap, or A/C. just bare bones to run the engine.

Thanks
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Old 02-26-2013, 10:45 AM   #11
bigolrig
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Just an update, i am working on separating the ecu wiring from the dash harness out of my SVX. It just takes time that i do not have much of at the moment. I will post pics when i take some good ones.
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Old 02-26-2013, 10:55 AM   #12
Jessekrs123
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Quote:
Originally Posted by bigolrig View Post
Just an update, i am working on separating the ecu wiring from the dash harness out of my SVX. It just takes time that i do not have much of at the moment. I will post pics when i take some good ones.
Ahhh yess, you mentioned my EG33 swap thread on Legacy Central

Yes, that harness is a real pain because everything is integrated. It took me a month of Sundays to get everything separated. Once I had everything separated, I had a good 15-20 pounds of wiring that was not needed

Good luck with the swap and props for doing everything on your own! I know where you're coming from, and while it is A LOT of work, the accomplishment you will feel when said and done will be undoubtedly worth it!

You can refer to my thread on here, or on Legacy central, I have the SVX pinouts on the first page:
http://forums.nasioc.com/forums/show....php?t=2291028

I have everything marked that is required to run the engine (standalone ECU) and a bunch of stuff that is optional (AC/CEL/bunch of other accessories). Also all the wires that must be merged if you're going that route instead of a full harness swap. It is all color coded.

Edit: Pinout, I'll put it here for you for easy access. This is the pinout for an OBDI SVX.

Last edited by Jessekrs123; 02-26-2013 at 10:59 AM. Reason: Pinout
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Old 02-26-2013, 12:48 PM   #13
bigolrig
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Thanks kessekrs123! Your thread was a lot of help! I was using that pin out last night while i was unpinning everything from the ecu connectors. I see how it took so long now. I am on week 2 (only a couple hours total though) with this wiring harness and the worst part is that it is a tangled mess! The question is not where do the wires go, it is how the heck do i get the wire i want out of this huge knot! Have you raced your car against a stock wrx or sti? I am curious how fast it is with no engine work done....
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Old 02-26-2013, 08:13 PM   #14
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Unfortunately I have not finished putting the engine together yet. I have a very busy schedule, work and school take up most of my time so I really don't know how well it runs yet lol. I hope o finish this swap sometime this spring.
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Old 02-27-2013, 11:27 AM   #15
bigolrig
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Ah dang! same here. I have a bunch of scrubbing, sanding, and painting to do in the near future. I hope to finish unpinning my ecu today so that is done. then i will pull the dash out of my L and un hook everything ecu wise and stuff i dont need there, plug in a few wires from the impreza harness into my svx ecu and hopefully I am golden wiring wise. fingers crossed!
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Old 02-27-2013, 04:10 PM   #16
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ok, using the svx as a standalone is what i did.

heres the wiring

first off take the whole svx harness, strip it down to the 4 engine plugs, maf plug, and 02 sensor plugs

splice backup power, fuel pump control, rad fan, starter signal, vss, tach with digital dakota signal converter inline.

run a relay to control unit power, ignition switch, and self shut off control.

turn key. fire up.
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Old 02-27-2013, 04:12 PM   #17
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it took me about 2 hours to strip the harness down, another 30-45 to "merge" harnesses. i have about 20-25 hours total from parking the svx to driving the impreza.

if you need any help dont hesitate to pm me.
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Old 02-27-2013, 07:06 PM   #18
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Wow quick turn around on that swap, very nice work!

Any videos of the car ?

Mike
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Old 02-27-2013, 07:49 PM   #19
bigolrig
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Grimmspeed: thanks its getting there! I love your parts!

2006Eg: did you depin your harness or cut wires from the plug? I am depinning mine. Depinning is sort of a pain in the butt. I hope I didnt make a mistake and they go back into the plugs. The last thing I wanted to do make a hack job wiring harness that causes a bunch of problems. I want my car to be simple and sorted out. It may not look pretty paint wise but I will know where every part is and where it goes specifically. I also second videos!! Have you ran it against a stock sti or wrx?

Foot Note: I wish i could get paid well to work on cool cars
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Old 02-27-2013, 10:24 PM   #20
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im looking at doing the same thing to a 2002 wrx, with a svx thats local the car runs and drives the only thing stopping me right now is trying to figure out if the h6 block from the svx will bolt on to the wrx trans. any input on that.
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Old 02-28-2013, 08:49 AM   #21
bigolrig
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The trans should bolt right up. They bolt up to most any subaru trans. I just dont think it will bolt to older subie trans missions like brats, loyales, xt6's etc..
p.s. good luck on your swap!
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Old 02-28-2013, 09:30 AM   #22
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bigolrig - initially, i clipped wires, and butt connected my connections, fired it up, drove it for 20 miles, made sure everything worked, then de-pinned and soldered.

tjluke - it will bolt right up. the only issue with GD transmissions is our lower starter bolt threads into the engine, but the svx engine used a stud on the bellhousing. so i had to tap the lower bolt hole on the GD transmission and run a shorter bolt. make sure you use the 2002 flywheel bolts.

no videos. i'll take some for everyone soon.

but here's a picture to tide everyone over

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Old 03-11-2013, 09:52 AM   #23
bigolrig
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Update: It has been very cold lately so I have not been working on my cars much lately, It is starting to warm up now so I am ready to start knocking this thing out. I am going to try to finish my wiring harness today. I need to go get some jewelers screwdrivers since i have broken two of them so far unpinning my connectors lol. I also received a DonJer flocking kit so I can flock my L's dash while I have it out for wiring. Should be pretty cool.... I am just worried about its durability over the years, but I am not too worried about it since this is not going to be a show car.

P.s. BUY SOME OF MY STINKIN SVX PARTS!!!!
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Old 03-11-2013, 11:00 AM   #24
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I was able to de-pin the harness connectors with thin paper clips and thumb tacks Some of the connectors have locking tabs that are really hard to free the wires from.

Jewelers tools should work really well and make the job much easier. I must have spent half the time on my harness just re-bending the paper clips to make them work right.

The EG33s are solid motors just like the old EJ22Es. It is actually just an EJ22 with 2 more pistons. Very very reliable, the only thing you have to look out for is keeping the engine properly cooled. Do not skimp out on that part. The reliability of the SVX motor probably was not even put to its true potential because they ate 4EATs like fat kids and cake.
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Old 03-11-2013, 02:08 PM   #25
bigolrig
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Lol! I am feeling it in my fingers for sure. I hate how everything is spidered together in this harness, i am not sure how to separate some things...

I have a question, what would be the most optimal radiator to use wit this build?
I would like to keep cost to a minimum. Saab 900? Griffin aluminum? Stock SVX rad? Others???
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