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Old 11-18-2006, 06:05 PM   #1
John2.5RS
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'13 F150 Ecoboost

Impreza GC8 GC JDM ver. 8 STI conversion

I thought I'd sit down and take some time to share with you all my 2001 2.5RS. I bought it shortly after I had a mishap with my 00 RS back around X-mas of 2000. I wanted another blue 4-door, I like the proportions better than the 2-dr. I had contacted Jerry(deadbolt) at Prestige Subaru in ashville, NC and he found one for me. It had an auto trans. but I had bought it with the intentions of doing a swap so I didn't care. little did I know I'd have that auto trans for a few years! But that's another story. If/when I do another project, I'd like to do some chassis mods as well, probably add a roll cage, as the subi would likely become a track/ pleasure car, and not be the daily driver it was before.
I'd like to thank everyone that helped, cronic and jeff_360 for twisting my arm to actually do it, and tyler for the many hours spent getting everything all nice and tidy.
So it started off with a N/A EJ25, putting down around 130 awhp It was a nice setup though, did normal NA mods, equal length headers, full exhaust, drop in filter. But I liked the suspension setup I had. H&R springs, KYB-AGX struts w/ Group N tophats, Prodrive 17x7.5" wheels, 4-pot front brakes. all in all, a decent daily driver. But as always, reading foreign car mags had me lusting for Turbo STI goodness. But it always seemed to not work out for one reason or another. Finally, the stars had aligned and I had my hands on a complete ver. 8 drivetrain (Thanks, Adrian! )and that got the ball rolling. My goal for the project was:
-weight under 3000 lbs w/ A/C, full interior & audio system
-sub 13 1/4 mile
-30 MPG
-300 AWHP
-maintain low visual profile
I got really close, and I sure with the cooler weather that it would have been possible.
Best time I got before it was wrecked, 1.8 60', 13.02 at 107mph with 100F ambient air temps at firebird raceway in Phx.

Here it is, last time it was driven with the NA motor

I had just gotten the seats & the trunk.



Don't want to bore you with all the details so out with the old engine and drivetrain! poof!


Remove interior, dashboard, & wiring harness


Now it empty, time to find something to fill the hole. this should do!




bolt the engine & trans, pop that sucker into the car!

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Last edited by John2.5RS; 12-03-2006 at 10:20 PM.
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Old 11-18-2006, 06:24 PM   #2
John2.5RS
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'13 F150 Ecoboost

Default Brakes, wheels, suspension

So knowing the JDM STI loves to rev, and that means more acceleration. My firm belief is that it's more important to have great tires & brakes than gobs of power. Power is nothing without control, right? And since the GC chassis is already a few 100 lbs lighter than the STI my drivetrain came out of, I felt that the brembos are more than sufficient for now. The rear brembos are the same size as the 4-pot fronts! But the Brembos caused a clearance problem with the wheels I had, they would hit the front calipers. I didn't want to use spacers so new wheels with the correct offset to clear the front Brembo calipers were in order. I decide the Volks were the best choice for this car, maintaining light weight and strength. I also used a pair of DBA 5000 2-pc rotors, to help reduce the unsprung & rotational weight of the front wheels. I also went with the Tein Flex coilovers w/ EDFC. I like to be able to fiddle with the damping from inside the cabin, as opposed to getting dirty trying to change the rear settings of the KYB's. It also give me the ablity to adjust the ride height, and eventually get cornerbalanced.
Old wheels

4-pot fronts








I also installed Goodridge SS braided lines and super blue dot 5 fluid. Black STI locking lugs, the wheels are Volk LE28n Gunmetal w/ a polished lip, 17X8" 44+ offset. It has a custom chromemoly rear strut brace, STI CF front strut tower brace, Front fender braces


Last edited by John2.5RS; 11-18-2006 at 08:30 PM.
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Old 11-18-2006, 06:30 PM   #3
John2.5RS
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'13 F150 Ecoboost

Post Wheels, Brakes, and Suspension (cont.)

And I knew with more power, It would put more strain on the stock suspension bushings as well. So I installed the GC STI full pillowball lateral links and trailing arms, a whiteline 22mm rear sway bar. As you can see from the picture, I also added a syms R180 rear differential cover, to help keep the rear diff cool, and a rear lower diffuser from an 06 sti to help clean up the undercar airflow, and compensate for the lack of rear wing.


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Old 11-18-2006, 06:46 PM   #4
John2.5RS
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'13 F150 Ecoboost

Default Weight reduction & powertrain

Weight is the biggest enemy of performance cars IMO. I believe If you can reduce the weight, it places less strain(usually) on components as it take less power(force) to change momentum(accelerate, turn, brake), and can push the envelope even further. With that in mind, I didn't want to overmod the engine. I installed a Walbro 255 lph fuel pump to compensate for the large fuel requirements of the turbo motor. I installed a Utec w/ a map switch so I could have different fuel maps and have launch control and full throttle shifting. I had a Prodrive 3-port boost solenoid, Jun VF-37 1-1.3 bar WG actuator, and a 3" non-catted DP made and was going to get it retune, but I had not installed it yet. I also went with the JIC 3" full Titanium exhaust. At 18lbs. with all mounting hardware, it's a good way to reduce weight and also looks good too! I swapped the front & rear bumper beams for the JDM units, installed an 11lb battery, CF trunk, gutted the dashboard & trunk, JDM AL hood, Sparco roadster seats, 2-pc rotors, coilovers, and a few other things here and there but those were the big weight items.



100 oct map 100F ambient temp 284 WHP 297 TRQ


91 oct map 100f ambient air temp



The ECU is a JDM Zerosport spec C unit, I'm using a Utec with a map switch to run 91 oct., and currently have 3 maps (91 safe, 91 pwr, 100 oct) dyno-tuned. Going to add a c16 map once the ceramic coated non-catted DP is installed.

Last edited by John2.5RS; 01-03-2007 at 05:37 AM.
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Old 11-18-2006, 06:56 PM   #5
John2.5RS
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2000 S201 STI #78
'13 F150 Ecoboost

Post engine bay

I wanted it to look as clean and factory-stock looking as possible, so every effort was taken to keep everything wrapped or protected, and make sure that nothing was going to rub through after a year or so. I had custom PS line made (it wasn't as difficult as some might think, totally worth it!) To you the JDM PS pump and cooler with the RS steering rack. I'm thinking of upgrading it to a quicker rack, somewhere around 13:1. But when it's all done, All I wanted to do is normal, routine maintanance. I wanted to keep the stock airbox & topmount, As I love the fact that it such a short route from turbo to TB, and I know they will support my HP goals (300-350 whp), can't go wrong with factory parts . I installed a red STI silicone TB hose, STI radiator cap(don't like the color doesn't really match, probably going to go with an ARC unit next time) and Black Samco radiator and Ancillary hoses, Prodrive gold oil cap and battery tiedown, ARC belt cover. Hella supertones (I painted black) so people will get the point. Since topmounts are prone to heat soak, I knew that some kind of intercooler-cooling would be needed. I installed a Zerosports intercooler splitter, a new washer bottle, and all the needed items to get the intercooler sprayer working. I also have a Cusco intercooler spray control that I plan on installing in the future, but for now, it's run through a toggle switch W/ A led indicator. It also has a Koyo Radiator with Flex-i-lite fans to keep things cool. Thinking about installing a cooler T-stat and and external oil cooler in the near future, we'll see.



I installed a set of NRG CF hood struts, my hood prop bent during the engine install process, that steel hood came crashing down on my arm and head, that didn't feel good at all.
Here is the Kazama voltage stabilizer/ grounding kit. It has a built in volt gauge as well. Nice looking unit IMO. You can see it glowing at night through the hood vent! After the picture was taken, I re-routed the wire loom that is going across the front for the horn relay, It looked a little sloppy IMO. You can see the Tsunami Fuse block mounted behind the battery.



JDM PS cooler

Last edited by John2.5RS; 01-03-2007 at 05:49 AM.
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Old 11-18-2006, 07:10 PM   #6
John2.5RS
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'13 F150 Ecoboost

Default Exterior

I didn't want to draw too much unwanted attention (AKA cops) so Big body kit & wing, and bright paint were out of the question. For the front, I really like the look of the Prova lip, the c-west, P1, and ver. 6 are all nice, but I see them around and I wanted something a little different. Next time, I'm going Full 22b style Front bumper, to match the flared Do-luck style fenders w/ shaved sidmarkers. Cleans up the car, I like it. It has a c-west front grill, 22b vents from japan, and a taller FRP hood scoop from our friends downunder at MRT, To go with the Lightweight Subaru Aluminum hood. I installed clear bumper lights & corners, painted the front lower vents black, JDM red/clear taillights, C-west front grill, a grillcraft front lower grill to protect the A/c condensor from rocks & debris, rear ver. 6 bumper spats, and the 06 sti rear lower diffuser, and Tinted the windows. Silvania Silverstar bulbs are all around, I like the blue/amber turnsignal bulbs!





Last edited by John2.5RS; 11-20-2006 at 12:15 AM.
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Old 11-18-2006, 07:11 PM   #7
John2.5RS
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'13 F150 Ecoboost

Default Interior



Since the new engine redline is 8250 stock, A new JDM inst. cluster is a must, to keep proper track of the revs. A used ver. 6 JDM cluster fit the bill. wired in a speedo convertor for Steve down at IA, and know its a 180 MPH speedo! Since it was an auto before, I had the pleasure of converting that as well. New shifter trim, Clutch master cylinder, clutch lines, WRX metal manual pedals, a 6-speed boot, and a STI Titanium Knob, and now we're shifting proper!



While I was at it, blue STI carpet and matching dead pedal were fitted.

JDM ver. 7 rear seat



Sparco seats are nice and snug!


Color matched to STI silver

Last edited by John2.5RS; 11-18-2006 at 07:28 PM.
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Old 11-18-2006, 07:29 PM   #8
John2.5RS
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'13 F150 Ecoboost

Default I.C.E. (In Car Entertainment)

I don't know about you, but I can't drive without some good tunes and a decent system.

An Eclipse headunit provides the 5V signals to the Eclipse 4-ch amp powering the Polk DB 6 1/2" 2-way components in the front and 6 1/2 coaxial speakers in the rear. I installed the tweeters in the door panels.




A Kicker mono sub amp is powering a JL audio 10" W3 Subwoofer in a sealed enclosure. At around 30 lbs, the entire sub/amp/box assembly doesn't add a lot of weight while filling the cabin with clean, tight bass. and the weight is kept as close the the center of the car as possible. It is securely mounted to the crossbar behind the seats and to the strut tower brace, and some of the seat material had to be removed to move it as far forward as possible. There is still room and access for a full size spare without removing the sub.


The I-pod inteface is installed in the center console and is accessed through the armrest. Sirius Sat. radio is also on the block. All audio is run through new Tsunami wiring and cables. 4-gauge from battery to distubution block under the driver seat, and 4-gauge continues all the way to the sub amp. 8-gauge is run to power the eclipse amp. I used 16-gauge monster cable to wire the interior speakers, and 12-gauge for the sub. The subwoofer amp volume control is mounted to the center console.

Last edited by John2.5RS; 11-19-2006 at 03:24 PM.
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Old 11-18-2006, 07:31 PM   #9
scoobyimpreza
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1998 impreza L
brillant red

Default

Word, gangsta.
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Old 11-18-2006, 07:32 PM   #10
AruisDante
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Ice Silver

Default

Nice... very clean and very well done. props to a fellow swap owner.
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Old 11-18-2006, 07:55 PM   #11
John2.5RS
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'13 F150 Ecoboost

Impreza GC8 Interior (cont.)

Now back to the cool stuff! To monitor how the engine is performing, a few gauges were added. Defi BF gauges to monitor boost, egt's, and oil pressure are installed in a Defi pod and controlled by a defi v.2 control unit. A CF JDM STI horn was used to make the center piece of the NRG steering wheel match the trim, which in turn is mounted on a NRG quick-release hub and a Splash short steering boss. To increase steering response and feedback, Stiffer steering rack bushings were installed. 06 black STI floormats were also throw in to keep that blue carpet fresh.






And of course, the Ti STI key.
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Old 11-18-2006, 08:22 PM   #12
RR02wrx
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Wait... you already purchased a new GC and swapped everything over? Thats crazy, you did it so fast. Alot of the pics do look like ive seen them befor from the pre-accident car. Is this really a new car lol? Looks identical!
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Old 11-18-2006, 08:33 PM   #13
John2.5RS
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PWN3D Good eye!

Quote:
Originally Posted by RR02wrx View Post
Wait... you already purchased a new GC and swapped everything over? Thats crazy, you did it so fast. Alot of the pics do look like ive seen them befor from the pre-accident car. Is this really a new car lol? Looks identical!
It's the old car, I just finally had some time to do a write-up! It will look the same basically, just going to use a 22b front bumper instead of the stock front bumper/ prova front lip combo.
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Old 11-18-2006, 08:35 PM   #14
shwoop_soobie
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beware

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no this is his old car. its just a full right up on the swap.
quite a road indeed john...goodluck with your insurence. i hope you can get luckey...

(its not gonna be so easy to do a second swap without the shop huh...
you guys gona do it in your tylers garage?
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Old 11-19-2006, 04:14 AM   #15
John2.5RS
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Default

Nah, I've looked at a few places though, Don't really want to reveal the location. I'll just post results. the reason why this thread was started.
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Old 11-19-2006, 04:49 AM   #16
amukaoen
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holy crap thats awesome!!!!!!
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Old 11-19-2006, 09:06 AM   #17
subbyspeed
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badass.
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Old 11-19-2006, 05:38 PM   #18
Siper2
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All I have to say is: $$$$$$$$$$ !

But I like it!
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Old 04-13-2007, 06:05 AM   #19
John2.5RS
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'13 F150 Ecoboost

Default

New Project in the works.
Should be back on the road with a month or two.
Project Phoenix click here
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Old 04-14-2007, 04:24 PM   #20
lllvietnaml
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wow....thats hot. very nice job. i wish i can afford the version 8 motor. im working on mine, trying to swap the Version 6 into mine. how long did it take you to do the swap?
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Old 04-15-2007, 01:47 AM   #21
Hyper
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pic request for the ic splitter
can you snap a pic of the hood closed, aiming into the scoop? I am curious how the splitter seats there

also is that GC or GD version?
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Old 04-16-2007, 02:43 PM   #22
John2.5RS
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'13 F150 Ecoboost

Default

/\ I'll try and find some, I don't have it on the car, But I think I have some old ones, I'll post them asap. It's a GC version. I just had to bend the intercooler mount down a hair to clear it, But it uses the intercooler sprayer much more efficiently.
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Old 04-16-2007, 06:46 PM   #23
John2.5RS
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'13 F150 Ecoboost

Default

Hes the only ones I could find, I'll make sure to get some good ones once I'm done with the new car. Remember, this is a taller and larger hood scoop than the stock one, so it's not as close to the top of the scoop as it would in the smaller scoop.(duh )





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Old 04-16-2007, 06:54 PM   #24
John2.5RS
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'13 F150 Ecoboost

Default

Quote:
Originally Posted by lllvietnaml View Post
wow....thats hot. very nice job. i wish i can afford the version 8 motor. im working on mine, trying to swap the Version 6 into mine. how long did it take you to do the swap?
A few months, most of the time was locating, ordering, and waiting for parts. If I wasn't waiting for the rollcage to be completed, I'd be driving it already! It's should only take a couple of weeks to do everything, If you have all the parts, and you have a good idea on what has to be done. make sure you don't blow your budget on go-fast parts, before you get it running (with no leaks) and tuned. I've seen too many people go crazy with the mods only to find out the motor is broken/leaking/low compression/etc. it really depends on what you know, what you planning/willing to spend, and who's doing to work (a shop, you and some friends).
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Old 04-16-2007, 07:24 PM   #25
Hyper
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does it cover complete area of the ic? also how much space is there between the splitter and the inside top of the scoop?

I am running bigger scoop too, I just modified V8 splitter but it looks ugly
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