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Old 07-02-2003, 02:04 PM   #1
8Complex

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Default Need some links for a FAQ in here...

Hey guys, I have to confess that I don't read in here a whole lot, but I've gotten in inquiry about a forum FAQ that I believe would be a good idea. If people could provide some good links (not the most recent, the most informative), we can get one going sooner.
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Old 07-02-2003, 02:39 PM   #2
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I think we need to start a few threads and let as many swap brainiacs throw all the facts they know in each thread then a moderator can go in and move all the facts in a single reply. They would have to be facts not "I think this would work?" stuff.
Some sample subjects:
USDM EJ20 - GC mechanical
USDM EJ20 - GC electrical
JDM EJ20 - GC mechanical
JDM EJ20 - GD mechanical
JDM EJ20 - GC electrical
JDM EJ20 - GD electrical
JDM EJ20TT - GC or GD = Don't bother!
And so on, you get the picture.
I will be doing my Ver2 tranny and drivetrain soon and will be taking lots of pics, so maybe an informative gallery can be started here or maybe on Scoobymods too.

Here's a link I use often. This info is all over the web so we could copy and paste it in a post. http://www.catherineandken.co.uk/sti/wrx.html
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Old 07-02-2003, 06:37 PM   #3
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This is my own doing so I'll go ahead and give it a start. While I don't have a specific thread to reference, some very commonly asked questions are as follows:

Q: "Can I put a <insert engine here> into my <insert Subaru here>?"

A: Subaru has a high interchangability rate as far as drivetrain components go. If your car came with an EJ series engine, then any other EJ series engine will "drop" into your chassis. I say "drop" because while they do share the same engine mounts, some other components may be required to change first before the engine can go in.


Q: "What is an 'EJ' series engine?"

A: EJ is the engine code for many Subaru engines. It is thought to have the following definition: E-Engine and J-H4. They are commonly found in the Impreza, Legacy, Liberty (overseas Legacy), Forester, and WRX. The typical naming convention is the engine code followed by the engine size. ie: a 1.8L engine from a 1993 Subaru Impreza is EJ18.


Q: "I have <insert subaru here>, what are my swap options?"

A: Lets go over the model history first:
EJ18: Found in Imprezas from 1993-1997. Rated at 110hp and 120 ft-lbs
EJ22 Phase I: Found in Legacies from 1990-1998 and Imprezas from 1995-1998. Comes rated at 130hp and 137 ft-lbs, 135hp and 140 ft-lbs, or 137hp and 145 ft-lbs.
EJ22 Phase II: Found in Legacies in 1999 and Imprezas from 1999-2001. Rated at 142hp and 149 ft-lbs.
EJ22-T Phase I: Found in Sport Sedan and Touring Wagons (Legacies) from 1990-1994. Turbocharged and non-intercooled. Rated at 160hp and 181 ft-lbs. Closed deck, cast pistons, forged rods, oil squirters: turbo motor. Poor flowing heads.
EJ25 DOHC Phase I: Found in Legacies from 1996-1999, Imprezas in 1998, and Foresters in 1998. Rated at either 155hp and 140 ft-lbs in 1996 or 165hp and 162 ft-lbs in 1997-1999.
EJ25 SOHC Phase II: Found in Legacies from 2000+, Imprezas from 1999+, and Foresters from 1999+
USDM EJ20: US Domestic Market WRX. Found in 2002+ WRXs. Rated at 227hp and 217 ft-lbs. Turbocharged, intercooled, open deck, and decent heads.
EJ25T DOHC: Available in 2004 in the Forester XT. Rated at 210hp and 235 ft-lbs. Turbocharged, intercooled, VVTi (Variable Valve Timing), and drive by wire.
EJ25T-STi DOHC: Available in 2004 in the WRX STi. Rated at 300hp and 300 ft-lbs. Turbocharged, intercooled, AVCS (Active Valve Control System), drive by wire, intercooler sprayer, and semi-closed design.

There is also a large variety of engines available from the JDM and EDM locales. The EG33 from the SVX and the EZ30 from the new H6 Legacy can also be found, but they are larger and will be more difficult to swap. There are no documented swaps for the H6 engines, but anything is possible.

With that out of the way, the choices are pretty limitless. As stated previously, since these are all EJ series engines, they will all bolt into any Forester, Impreza, or Legacy. If the recipient car was an NA car and is receiving a turbo motor from a donor car, then swapping in a turbo crossmember is mandatory to clear the turbo up-pipe. A turbo crossmember from the 1990-1994 Legacy is a direct
swap into the old-age Imprezas. A turbo crossmember from a USDM WRX will require shims between the front control arm front bushing and the crossmember. http://forums.nasioc.com/forums/show...hreadid=351399



Q: "Do I have to do any wiring to swap <insert engine here> into my <insert Subaru here>?"

A: It is hard to answer that with a blanket statement, but it is safe to say that most swaps are going to require rewiring.

There are a few exceptions covered in this thread: http://forums.nasioc.com/forums/show...hreadid=370056, this thread: http://forums.nasioc.com/forums/show...hreadid=148766, and this thread: http://forums.nasioc.com/forums/show...hreadid=383415 where it was either a bolted right in, or the electrical components were swapped over to the donor engine.



Q: "Can I use <insert engine here> with <insert transmission here>?"

A: The answer is almost a resounding yes. All EJ series engines share the same bolt pattern on the bellhousing. While some use fewer bolts than others, they will still bolt up. One caution though, the turbo transmissions use a pull-style clutch whereas the NA transmissions use a push-style clutch. If you are swapping transmission types, you need to match the transmission up with the correct clutch/flywheel assembly. One more precaution: if you are swapping in a transmission, you need to be sure that your rear
differential final drive ratio matches the final drive ratio of your transmissions. Installing a new transmission without checking this could permanently damage your center differential! Putting an engine from a FWD car into an AWD car or vice versa does not change the swap criteria as it will still all bolt together.



Q: "Why can't I just swap in a new engine and leave everything else?"

A: Good news, you can! The structure and strength of the transmission is realtively unchanged since the 1993 Imprezas (not necessarily a good thing). There are some exceptions though: the turbo Legacies had a more uniform metal composition in the gears while the new STi comes with a robust 6-speed. Other than that, the gear strength is almost the same. You can read all about this here: http://forums.nasioc.com/forums/show...hreadid=289335


Q: "So how hard can wiring really be?"

A: The difficulty is all in your perception of things. If you are capable of reading wiring diagrams, handy with the soldering gun, and able to have your car down for about two weeks, then its not that difficult. Be prepared for headaches when you can't find what is causing that little quirk. Here is a preview of the things to address: http://forums.nasioc.com/forums/show...hreadid=345873. However, there are also companies who have a made a business doing these conversions so there is enough difficulty that it shouldn't be taken lightly.


Q: "I think I can do this wiring myself, but I will need some help. Where can I turn?"

A: You can start off by searching this forum here. There are a lot of veterans out there that know a lot. Do a search first before asking a new question. Chances are, it has been asked before. You can also go to Subaru's very own technical information site, http://techinfo.subaru.com/html/index.jsp, or you can also try All Data: www.alldata.com.


Q: "What does it really take to do a swap?"

A: You asked for it! http://forums.nasioc.com/forums/show...hreadid=289335, http://forums.nasioc.com/forums/show...hreadid=179534, and http://forums.nasioc.com/forums/show...hreadid=291801.


Q: "How do I get started sourcing my new project?"

A: "There are many vendors that will help you on your way. Some of them include http://www.lachutesubaru.com,
http://www.i-speedusa.com, http://www.rallispec.com, and http://www.axispowerracing.com. You can also try this thread: [url]http://forums.nasioc.com/forums/showthread.php?s=&threadid=147895[/url or this thread:
http://forums.nasioc.com/forums/show...hreadid=295887


-Jon

Last edited by stimpy; 07-02-2003 at 06:45 PM.
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Old 07-02-2003, 11:28 PM   #4
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Very good, keep'em comming.

Jay
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Old 07-04-2003, 02:15 AM   #5
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anyone need more info let me know I just finished my JDM WRX swap complete. As in all wiring JDM (ECU), engine, tranny, rear diff, driveshaft, and many more. So if you need help on wiring or engine related stuff I am always willing to help.
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Old 07-04-2003, 02:47 AM   #6
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I just noticed a revision that needs to be made:
EJ25 SOHC Phase II: Found in Legacies from 2000+, Imprezas from 1999+, and Foresters from 1999+. Rated at 165hp and 166 ft-lbs. There was a slight compression ratio change from 1999-2000 where it went from 9.7:1 to 10.0:1.

AWJunkies, as you can see, my knowledge of most of the JDM stuff is pretty limited. If you can offer any information it would be greatly appreciated.

-Jon
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Old 07-05-2003, 10:58 PM   #7
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ask me a question and I will answer. It is hard to know where to start and what exacly you want to know.
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Old 07-05-2003, 11:01 PM   #8
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I don't see JDM EJ20 on there 2.2 liter turbo. was in I believe 95-98 years. Was after the closed deck. There is also a twin turbo version. They are both dual overhead cams. Let me know if you want info like that or about swaps or wiring or what. I have picts of my swap.
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Old 07-05-2003, 11:02 PM   #9
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8.0:1 compression ratio and is rated at 256 hp. need more info just ask.
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Old 07-11-2003, 04:44 PM   #10
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Q: "I have a FWD Subaru, can I convert it to AWD?"

A: As previously stated, Subarus are very interchangeable. If your car came with an EJ series engine, then any other engine components from an EJ series engine will drop into your chassis. Most of the time, you can't slowly convert to AWD; many of the components require the removal and/or installation of other components to work.

Q: "What components are needed to convert a FWD Subaru to AWD? Also read as 'Transmission swap technicalities'"

A: A new transmission will be required. Along with the new transmission comes the front diff, center diff, and tailshaft. You must also get the corresponding driveline for the transmission (side note here, if you are merely swapping one AWD transmission
for another the MT typically shares one driveline between all other MTs and the ATs share another driveline; the STi 6-speed uses an AT driveline). There are many rear diff options, and any of them can be used as long as the final drive matches the final drive of the rear diff of the donor car the transmission came from. Front axles should be interchangeable, but newer axles are thicker. CV strength has remained the same and are not a weak point. Rear open diffs can be found on most Subaru models. Rear LSD s came on some Legacy Turbos, Some SVXs, 2000-2001 2.5RSs, and 2002+ WRXs. While final drive ratios vary, the axle splines do not. Your diff choice governs which rear axles are to be used. You will either need rear axles from an open diff Legacy or GC/GF/GM Impreza for an open diff or rear LSD axles from a 2000-2001 Impreza 2.5RS (ask for axles from 05/2000+ to be safe) for a rear LSD. If you are converting from AT to MT or viceversa, you will need the corresponding ECU since the AT ECU expects a TCU signal. You can spoof it as some have done.

"What else is needed?" Along with the basic driveline components, you are going to need most of the rear suspension and mounts from the transmission back. This includes the transmission crossmember, rear diff crossmember (and all in between), AWD gastank with driveline hump, struts and springs, AWD knuckles, a plethora of bushings, with the possibility of lateral links, swaybar, and trailing arms also being needed. Your best bet is to find an entire donor car that can be stripped. If that is not an option, you will be, as beachbum has said, 'nickle-and-dimed to death'.



Q: "Which cars have rear LSDs and what are their final drive ratios?"

A: I don't know, go ask your mother. (I'll come back to this later when I'm fresh)

-Jon
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Old 07-14-2003, 12:53 PM   #11
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Q: "Can I update my Impreza to look like a 2.5RS?"

A: Yes, you can. The chassis has remained the same from 1993-2001. There have been very few drastic updates over the years. There was a facelift done in 1997, but it uses the same mounting points. The RS bumper was updated in 1999 to use the Version V bumper. This required a new bumper beam. The items needed can be found in this thread: http://forums.nasioc.com/forums/show...hreadid=390362

-Jon
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Old 07-16-2003, 01:53 PM   #12
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Q: "What is this I hear about GC8, BC/BF, GGA, GDB, etc?"

A: You can find all this information in the following thread: http://forums.nasioc.com/forums/show...89#post4261389

-Jon

Last edited by stimpy; 07-19-2003 at 01:49 PM.
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Old 07-19-2003, 01:42 PM   #13
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Q: "Which cars have rear LSDs and what are their final drive ratios?"

A: Use the following link to find the details: http://forums.nasioc.com/forums/show...65#post4261365

-Jon
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Old 08-04-2003, 03:27 PM   #14
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Q: "What axles do I need to use with my transmission and rear diff?"

A:
You can read about axle compatability here: http://forums.nasioc.com/forums/show...hreadid=401263

-Jon
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Old 08-04-2003, 08:27 PM   #15
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thanks for the hard work stimpy ill add those asap

jay
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Old 08-10-2003, 04:25 PM   #16
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I'm under going the awd swap and it looks like I'm going ot need a new shifter stick and the whole shifter assambley cuz my fwd shifter that big arm doesn't look like it'll fit the new hole
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Old 08-27-2003, 05:25 PM   #17
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Still missing some of the suggested threads in the FAQ.

Here is another that I think is important while sourcing the engine: http://forums.nasioc.com/forums/show...hreadid=406776

-Jon
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Old 10-09-2003, 10:17 AM   #18
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Default H6 Swap

From the FAQ: "The EG33 from the SVX and the EZ30 from the new H6 Legacy can also be found, but they are larger and will be more difficult to swap. There are no documented swaps for the H6 engines, but anything is possible."

I would like to submit my swap as evidence / documentation.

Supporting evidence is here:
H6 Conversion Page

as well as in a couple of threads here on the conversion board...

Cheers,
Anders
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Old 10-09-2003, 11:19 AM   #19
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Thanks Anders. I wrote that up pre-you

-Jon
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Old 12-16-2006, 09:11 AM   #20
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back from the dead...holy 3-year old thread.

I thought I'd mention that the EZ30 swap link is dead...I'd love to check out that conversion page.

AND, to suggest that a link be put up to the Retrofitting forum on the USMB for EA-EJ engine swaps. I didn't frequent this site until recently, and now that I'm running mostly EJ drivetrain in my loyale, I'm over here more. anyway, I've noticed numerous posts asking about swapping an EJ engine into an EA car....

soo...I think something like this would work well:

Q: Can I swap an EJ-series engine into my EA-series (pre-1990 and '90-'94 Loyales) car?
A:
Yes, Many people have done the swap, and highly recommend it. Check out the Retrofitting forum on the USMB for more info.
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Old 05-16-2009, 02:51 AM   #21
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susbscribed
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Old 07-30-2009, 11:30 AM   #22
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Default L->WRX Brake Upgrade

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