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Old 04-24-2007, 01:22 PM   #51
98jdmwrx
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Sorry to jump in, but Ive searched and searched for specs and comparisons on my engine code. All the info I've seen says my engine belongs to an sti, RA. I got the car two weeks ago from japan and its a 98 wrx. The engine code is :ej207DW1KE and the turbo on it is a vf29. Is someone making a mistake with the year, engine by saying its from a sti? Or did the wrx come with an sti motor for that specific year? Thanks, from what i can see so far you guys know your stuff. Also can i get some links to sites with specs of my motor: cams, pistons, etc.
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Old 04-24-2007, 03:18 PM   #52
kingsubi
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Depending on the tranny it came with it could be a wrx or wrx RA from 1999.

Maybe worth starting your own post though....

more info here: http://www.catherineandken.co.uk/sti/wrx.html
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Old 04-24-2007, 04:38 PM   #53
98jdmwrx
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Quote:
Originally Posted by kingsubi View Post
Depending on the tranny it came with it could be a wrx or wrx RA from 1999.

Maybe worth starting your own post though....

more info here:
Thanks dude, according to the site i have a wrx, and my engine code is the same as the ra and sti from that year. I tried to start a thread on here but they said I had to reply 3 times before starting a thread ( newbie rules) lol. I'll start one as soon as I can. Thanks again.
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Old 05-07-2007, 02:31 PM   #54
oldhat
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I bought some ghetto GD coilpacks on eBay and tried installing them and the motor misfired. Bit the bullet and bought a set of brand new OEM and installed them. Motor pulls noticeably harder now and the idle sounds meatier. Maybe it's just the butt dyno. I don't know. Anyway, great modification. Thanks to rob for discovering this.

Last edited by oldhat; 09-09-2008 at 07:08 PM.
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Old 06-15-2007, 10:00 AM   #55
94,2.5,sti
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nice 1 im gonna do this straight away man good job

Last edited by 94,2.5,sti; 06-15-2007 at 10:07 AM.
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Old 08-02-2007, 06:40 PM   #56
Norcalrallyist
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Fixed my problem! You the man Rob! Living in an apartment so no access to electricity for soldering iron and I ended up using butt splice connectors which worked so hopefully they will continue to work.. Boosting to 1 bar now thanks!

I forgot to add that my coils showed no sign of cracks or fatigue of any kind. Replace them all regardless of what they look like if you want to eliminate the possibility of this problem!
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Old 08-02-2007, 11:24 PM   #57
rob
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Good to hear. Another satisfied customer

-Rob

Last edited by rob; 08-02-2007 at 11:36 PM.
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Old 10-04-2007, 01:24 AM   #58
suberboy
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I was changing plugs on an STi and compared the coils to the WRX coils i'm using in my 20g and noticed that the boot is a different length, shorter if i remember correctly, and i was wondering if that would cause any problems?
I read that one person here used the STi coils successfully has any one else tried them?
-noah
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Old 11-09-2007, 12:20 AM   #59
Gtwozero
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i got 4 used '06 WRX coils with 5,000miles on the for $100 bucks at junkyard. wired'em up and it works flawlessy.

thanks Rob!!!!
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Old 11-11-2007, 01:33 AM   #60
Calebz
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I saw mention of a fitment issue with the legacy motors. I am considering using an EJ20H for a project (people ask why - it is easily available). It will be converted to a single turbo.


What sort of problems or issues should I expect doing this coil swap?
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Old 11-12-2007, 04:51 PM   #61
rob
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It turns out the legacy cam covers have a two hole mounting scheme, so the coil mounting holes don't line up. You need to drill a new mounting hole on the coil. Also I think the size of the coil body is too big, so you also need to round down a corner a bit. Best would be to try to find the WRX cam covers.

-Rob
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Old 11-13-2007, 03:04 AM   #62
bmxpunk
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Sweet I just aquired a set of 07 coils as well as the intake manifold harness so I am going to do some cutting and splicing this weekend!!
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Old 11-14-2007, 01:18 PM   #63
BoostAddictPL
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Question USDM WRX Coil fitment (Liberty RS/old Legacy heads)

How did everyone with the old-school Liberty RS/JDM Legacy heads out there mount their new USDM WRX coils?

I've swapped a JDM Legacy EJ20G into my '91 Legacy SS. I have also converted it to run with the stock EJ20G ECU and the 2003 USDM WRX ignition coils. The USDM WRX coils don't fit into my heads and I'd like to know how everyone else out there solved this problem.

One idea is to mount the USDM WRX ignition coils externally and run old-school spark-plug wires into the spark plugs inside of the heads.

If there's a way to mod the old-school Liberty heads, or the USDM WRX coils to fit in there, please let me know.

Pics would be highly appreciated


Cheers!
P.
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Old 11-14-2007, 02:54 PM   #64
rob
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Quote:
Originally Posted by BoostAddictPL View Post
How did everyone with the old-school Liberty RS/JDM Legacy heads out there mount their new USDM WRX coils?

I've swapped a JDM Legacy EJ20G into my '91 Legacy SS. I have also converted it to run with the stock EJ20G ECU and the 2003 USDM WRX ignition coils. The USDM WRX coils don't fit into my heads and I'd like to know how everyone else out there solved this problem.

One idea is to mount the USDM WRX ignition coils externally and run old-school spark-plug wires into the spark plugs inside of the heads.

If there's a way to mod the old-school Liberty heads, or the USDM WRX coils to fit in there, please let me know.

Pics would be highly appreciated


Cheers!
P.

Look 2 posts up. I'll see if I can scrounge some pictures from the liberty board.

-Rob
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Old 12-28-2007, 06:27 PM   #65
Kaymin
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BUMP for the pics being gone!
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Old 12-28-2007, 11:13 PM   #66
rob
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Fixed.

Thanks Kaymin. Nice to see you are local now.

-Rob
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Old 12-28-2007, 11:39 PM   #67
Kaymin
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a local to pre2002?
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Old 03-18-2008, 04:08 PM   #68
dwrecckk
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Hey, I was wondering what kind of solder you guys used as well as soldering gun. The gun I have available to me is not very precise, i doubt i'd be able to solder the wire I picked up (14awg) directly to the pins just for lack of clearance or space. I also went looking for those crimp connecters but all the ones I found were too wide and I couldn't get them to all sit in there nicely. How'd you guys all do it?
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Old 03-18-2008, 04:42 PM   #69
Eatoniashoprat
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I used a pretty big gun and soldered the wires directly to the pins, it was a pain, but I personally wouldn't do it any other way. I just loaded a bit of solder on the wires, slid them underneath the pin on the coil pack, put some solder on the tip of the gun, then heated up the pin and the wire and pin fused together. I tugged and twisted the wires pretty good afterwards to make sure there were no cold solder joints.

Mike
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Old 03-18-2008, 04:53 PM   #70
rob
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First, use a 30-40w iron. I hate those guns. Second, you could cut away some of the plastic that surrounds the pins for better accessability. Oh and 14awg seems a bit overkill. You could go 16-18 which would be easier to work with.

-Rob
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Old 03-18-2008, 11:27 PM   #71
Eatoniashoprat
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I agree with everything Rob said, I just used a big gun cus I have one, and I don't have a small iron.

In other news, here are some pics of making these coil packs work with legacy ej20g heads/valve covers!!!

First: pop the copper bushing out with a socket and a hammer.
Second: Cut part of the metal part off of the coil pack as shown in the first picture. You can use a hack saw or a zip disk.
Third: You need to cut off the smaller metal mounting hole on the coil pack on only two of the packs. This is because the mounting is different on the passengers side, the big hole doesn't line up with the holes. If you cut these small holes off you can run the mounting bolt along side the coil pack with a washer on it to hold it in. I didn't show a pic of this.
Fourth: Take a dremel or hand file and remove a small amount of material (plastic) where the arrows are pointing in the second picture.
Fifth: Sit back and admire your work.

When I held the packs up before cutting the metal part it looked like a lot of this plastic was going to be in the way, meaning having to cut very deep and expose the internals. Just remove a few mm on each side and corner the edges, test fitting after each small cut and you're good to go. I used a hand file because it really only needed a couple passes to fit, not really worth getting the dremel out, unless you don't have a file.

With the copper bushing out, the hole is big enough that you can use the legacy mounting bolt to secure the coil pack, no need to drill a new hole. Since this bushing is gone though, I suggest using a star washer to ensure good contact with the ground wire.





If anything is unclear let me know and I fix it.

Last edited by Eatoniashoprat; 03-30-2008 at 01:20 PM.
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Old 03-28-2008, 09:33 PM   #72
dwrecckk
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I just finished this at my friends house and drove the car straight to work. It definately pulls stronger and much smoother but I'm still hitting what feels like a stumble or possible fuel cut at 3800rpm in every gear. Did you guys have to do a ecu reset after this? my car also threw a CEL but it went away, it feels somewhat like how it is usually in safe mode because, doesn't really matter where throttle position is at, at 3800 it just hits a wall. You guys have any issues? I'll probably reset the ecu at home...

oh yeah and the main title diagram for the wiring and how it's shown is reversed, which was a bit confusing, miswired one, but finished alright.
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Old 03-28-2008, 11:44 PM   #73
dwrecckk
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strange, drove it to work, had that constant stumble, then after work, got in it and went home, and it was having this really strange stumble around 2800, then it warmed up and I did a few pulls and everything seems to run really really well right now. So strange, my car is so bipolar. Well hopefully this will just be the end it'll work out well, so far so good!
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Old 03-31-2008, 12:26 PM   #74
rob
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Quote:
Originally Posted by dwrecckk View Post
oh yeah and the main title diagram for the wiring and how it's shown is reversed, which was a bit confusing, miswired one, but finished alright.
What did you find wrong with my diagram?

-Rob
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Old 04-09-2008, 07:17 PM   #75
dwrecckk
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There was nothing wrong with it, just a bit confusing.

Pin1 : Pin2: Pin3
+12v : GND : Trigger
Red : Blk : Green <--- wire colors I used in my picture
RY : BY : GY <--- '02 WRX harness colors

It was just reversed compared to the picture right below it

Pin1: Pin2: Pin3
Trig :GND:+12V
Green Black Red

matches the pic below.
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