is it possible/how hard

[MetalNeverDies]

how hard is it if at all possible to put a wrx engine in a car built for the 2.5 rs? i know i would probably need a new trans, clutch, exhaust and what else? but about how much do you think it would be to do a motor swap in a 2005 2.5 rs engine bay?

or would it just be cheaper to try and turbo the engine and get some forged internals and what not?

[sebhockey]

Yes it's possible, there are plenty of people who have done it. As far as what all would be needed to do it would be better off to look on the rs sites and nasty sock. I think it would prolly be cheaper to just buy a wrx motor and turbo and install it than to upgrade you motor.

[BlackParis]

SWAP OPTIONS: 1st... Your going to want to get an 06+ WRX 2.5 if you are going to do the swap... I consider the 2.0 a downgrade.... Or get ANY complet STi Motor.... Your transmission and clutch will bolt up, so no need to buy new ones... But if you do upgrade, get the STi 6spd and all the swap parts...
2nd... Why did you buy an NA car, if you wanted a turbo? The WRX cost 4k more than the RS... Its going to cost close to that to do the complete swap, plus all the work your going to put into it....
3rd If your state doesnt have emmisions testing, you can swap in ANY subaru motor..... Most emmissions tests require same year or NEWER OBD2 ECU..... Some of the old 2.2 Turbo motors can be had pretty cheap and will build quite a bit of power.....


Turbo Option: You can buy all the WRX or STi Turbo Parts, and Bolt them on to your motr, this can be done for less than 1500$, if you dont mind using stock or cheap ebay parts... You can safely run 6-8psi, and maybe a few more once someone realeses engine management to the public.... and if you buy an FMIC you dont need to change your hood....( I have been taking my time collecting all the parts I need... Inventory last night showed (after UPS stopped by) :twisted:, All I NEED is an intercooler system, ebay FMIC is less than 300, and I spent a total of 600$ on everything else :-D So I will have spent 900$ on a complete turbo system.... O and you can change the turbo for a different more effient one if you'd like... I got myself a teenie tiny turbo.... I want full boost before 2krpm :twisted:)

Also... EJ257 Shortblock generally cost 1700$ plus shipping... Just swap your heads on with new gaskets, if you want to go crazy with boost....


NA Build Option: One of the editors @ Subie sprt got ahold of a preliminary AccessPort, for 05+ NA motor... So he decided to do a 05 RS NA build, BASICLY its a ej257 Crank and rods, with 12.5:1 compression pistons, and some nasty headwork and cams, and with the accessport, he was able to allow the motor to rev to 9.2krpm and build 260awhp NA.... Thats more than a stock WRX STi (233awhp).... I think his total engine build cost (Parts and Machining) was around 4.5k$ ....
(I cant find the links right now.. Grrrr...) I dont know if it got published, I just remember seeing a write up of it on one of the many NA subaru websites out there....

ZZYZX motorsports has also done something similar... 235awhp
http://zzyzxmotorsports.com/news/300hpna
http://zzyzxmotorsports.com/news/300hpnamods

[L and E Fab.com]

SWAP OPTIONS: 1st... Your going to want to get an 06+ WRX 2.5 if you are going to do the swap... I consider the 2.0 a downgrade...

Unless you are building a rally car.

P-GT Class you must run a 32mm turbo restrictor the 2.0L or under offers the most drivable power band.

Open Class you must run a 34mm turbo restrictor the magic number is somewhere between 2.0L and 2.4L I prefer the more open power band of the 2.0L with a turbo restrictor.

I also do not like the 2.2L turbo legacy swap as a bolt in. I think the block is amazing but the head restrict flow heavly.

So I agree with BlackParis about the 2.5L. That is what is planned for my Street OBS in the next couple years.

I have swapped a 2.0L into a older Impreza and would be more then happy to answer any questions.

[MetalNeverDies]

SWAP OPTIONS: 1st... Your going to want to get an 06+ WRX 2.5 if you are going to do the swap... I consider the 2.0 a downgrade.... Or get ANY complet STi Motor.... Your transmission and clutch will bolt up, so no need to buy new ones... But if you do upgrade, get the STi 6spd and all the swap parts...
2nd... Why did you buy an NA car, if you wanted a turbo? The WRX cost 4k more than the RS... Its going to cost close to that to do the complete swap, plus all the work your going to put into it....
3rd If your state doesnt have emmisions testing, you can swap in ANY subaru motor..... Most emmissions tests require same year or NEWER OBD2 ECU..... Some of the old 2.2 Turbo motors can be had pretty cheap and will build quite a bit of power.....[quote]

1 i will it matter if i get the 2.5 or 2.0 if im just doing rallyx and not real competition rally?
2.i got the rs model because i was stuk in a bent frame honda civic that i traded in for an amazing deal and used on a down payment on a good working car. the only ones the dealer had that i could afford and were in good condition was a 1.8 l bottom end pt cruiser (hate them with a pasion) and it was an auto. the other was a saab 92x 5spd 2.5 awd.... it wasnt my first choice and kinda streched my budget but i still kinda liked it and hadnt seen anyothers so thought it was unique. i would have loved to have got a real suby with a turbo... or even the older 2.5 rs's but there was none there as well as being only 17 years old there is no way in hell that i would be able to afford the insurance on one. my non turbo with no accidents no tickets and lots of discounts is 200 a month. and a wrx would be like 400 a month for me with completely clean record.
3. az does have emisions :(

[L and E Fab.com]

No real rally competition go with the 2.5L the extra torque will help in rally crossing.

Even putting a nice turbo kit on your existing 2.5L engine would be a great rally-x setup. Boosted for extra power and nice and torquy out of the boost.

[BlackParis]

Even putting a nice turbo kit on your existing 2.5L engine would be a great rally-x setup. Boosted for extra power and nice and torquy out of the boost.

This is what I would strongly recommend, as it is the cheapest...

[L and E Fab.com]

Even putting a nice turbo kit on your existing 2.5L engine would be a great rally-x setup. Boosted for extra power and nice and torquy out of the boost.

This is what I would strongly recommend, as it is the cheapest...

And probably the easiest.

http://yhst-49187380673845.stores.yahoo.net/avocotukit.html

The kit I always dream about.

[BlackParis]

Even putting a nice turbo kit on your existing 2.5L engine would be a great rally-x setup. Boosted for extra power and nice and torquy out of the boost.

This is what I would strongly recommend, as it is the cheapest...

And probably the easiest.

http://yhst-49187380673845.stores.yahoo.net/avocotukit.html

The kit I always dream about.

Hmm.... Any Idea what turbo they use? I have a T3/To4 That I will be putting on soon, but I dont know yet if I should a tad bit smaller, I want LOTS of torque before 3k...

[MetalNeverDies]

Even putting a nice turbo kit on your existing 2.5L engine would be a great rally-x setup. Boosted for extra power and nice and torquy out of the boost.

This is what I would strongly recommend, as it is the cheapest...

And probably the easiest.

http://yhst-49187380673845.stores.yahoo.net/avocotukit.html

The kit I always dream about.
that looks pretty sweet but i dont think it will fit my car because it said it fits all 2000-2004 subaru 2.5 l engines.... mine is an 05... but who knows what year the engine was from

[BlueRu]

Keep in mind that ALL cars that are a certain year are built the year before. I.E. my '03 WRX was built in 11/02.

[L and E Fab.com]

[quote=L and E Fab.com]Hmm.... Any Idea what turbo they use? I have a T3/To4 That I will be putting on soon, but I dont know yet if I should a tad bit smaller, I want LOTS of torque before 3k...

Well if you deside it is too big.

I am working on a rotated Garrett turbo kit for the Garrett GT28RS *what I run with the 2.0L" and the GT287rs.

http://rally.landefabrication.com/pics/gt28rs1.JPG
http://rally.landefabrication.com/pics/gt28rs2.JPG
http://rally.landefabrication.com/pics/gt28rs3.JPG
http://rally.landefabrication.com/pics/gt28rs4.JPG

I am planning on finishing the production kits this winter for spring delivery.

This kit is designed to work with the Garrett GT28RS with internal wastegate which is available with two different A/Rs to so you do have some adjustably on how the turbo spools.

It works with most top mount intercoolers.

Kits are going to be available in 3 different versions.
1. complete kit (uppipe, downpipe, turbo, lines, intercooler, intake hoses, and intake filter)
2. Partial Kit (uppipe, downpipe, turbo, lines, and pipe from turbo to intercooler)
3. all the parts individually.

Don't forget the photo's above are spy photos and the kit already is looking much better. I am either going to be working with Tial or Samco for the kits. Because I hate flimsy hoses that blow off. Like some other companies sell with there kits.

These kits are also designed for rally applications so they will not shake them selfs to death.

[BlackParis]

GT28rs... How cute :twisted:

Actually this is what I was planning on getting in the first place..... But since I had this T3/T04 I was going to put on my Acura (which may not be finished for 2 more years), I figured why not make use of it, to see if I like it...

[L and E Fab.com]

GT28rs... How cute :twisted:

Don't forget this is a "Rally Car" and that is all it does so getting on boost is a must.

[I Like It Sideways]

I'm quoting this from RS25.com. This is for a USDM WRX motor swap into a 2.5RS
The thread can be found Here (http://www.rs25.com/forums/showthread.php?t=36864)

Here's what you need:

-Motor (Complete, intake and exhaust manifolds, IC, turbo, etc-obvious stuff )
-Crossmember (You can use the USDM WRX or STi X-member, but you will have to shim your control arms. The only direct bolt-on x-members are the true GC8 ones and the USDM Legacy turbo ones)
-Front Sway Bar (USDM WRX wagon if you're using a WRX or STi x-member, Legacy turbo or true GC8 bar if you're using the respective x-members)
-Full Exhaust (anything for a USDM WRX should work, some fit better than others)
-Fuel Pump (Need at least a USDM WRX, I'd recommend a Walboro 255lph unit, because you'll probably need more fuel eventually )
-Fuel Pump Controller
-Full Wiring Harness (This is everything from the harness on the intake manifold to the connectors for the o2 sensors, MAF, ECU, etc, to the plug in the rear harness for the fuel pump controller)
-WRX MAF sensor
-WRX o2 sensors
-WRX ECM
-WRX Powersteering assembly (You need the pump, remote reservoir, and the lines that connect this to the steering rack)
-WRX throttle cable (You need this for a perfect fit if you're swapping a car that was not DOHC from the factory)
-Clutch (If you're re-using your factory NA transmission, you will need to re-use your NA flywheel as well, and get an upgraded NA clutch. I'd recommend a ACT or Spec clutch, I've heard good things about the AST ones too)
-Boost Control (Simplest is the factory boost solenoid w/ ristrictor pill, but if you plan on using certain aftermarket ECU management tools, like the UTEC, you can use the GM factory boost solenoid. It's a 3-way device found on the Typhoon and other forced GM vehichles.)

[BlackParis]

I'm quoting this from RS25.com. This is for a USDM WRX motor swap into a 2.5RS
The thread can be found Here (http://www.rs25.com/forums/showthread.php?t=36864)

Here's what you need:

-Motor (Complete, intake and exhaust manifolds, IC, turbo, etc-obvious stuff )
-Crossmember (You can use the USDM WRX or STi X-member, but you will have to shim your control arms. The only direct bolt-on x-members are the true GC8 ones and the USDM Legacy turbo ones)
-Front Sway Bar (USDM WRX wagon if you're using a WRX or STi x-member, Legacy turbo or true GC8 bar if you're using the respective x-members)
-Full Exhaust (anything for a USDM WRX should work, some fit better than others)
-Fuel Pump (Need at least a USDM WRX, I'd recommend a Walboro 255lph unit, because you'll probably need more fuel eventually )
-Fuel Pump Controller
-Full Wiring Harness (This is everything from the harness on the intake manifold to the connectors for the o2 sensors, MAF, ECU, etc, to the plug in the rear harness for the fuel pump controller)
-WRX MAF sensor
-WRX o2 sensors
-WRX ECM
-WRX Powersteering assembly (You need the pump, remote reservoir, and the lines that connect this to the steering rack)
-WRX throttle cable (You need this for a perfect fit if you're swapping a car that was not DOHC from the factory)
-Clutch (If you're re-using your factory NA transmission, you will need to re-use your NA flywheel as well, and get an upgraded NA clutch. I'd recommend a ACT or Spec clutch, I've heard good things about the AST ones too)
-Boost Control (Simplest is the factory boost solenoid w/ ristrictor pill, but if you plan on using certain aftermarket ECU management tools, like the UTEC, you can use the GM factory boost solenoid. It's a 3-way device found on the Typhoon and other forced GM vehichles.)


This applies specifically to a USDM WRX -> USDM 1st gen Impreza

I dont think you need a different crossmember... or sways or Powersteering rack... Its much less involved for a GD.... Wait.. Are Saabs also a GD?

[L and E Fab.com]

Saabs are in fact a GD. you need a different cross member because the n/a exsaust goes under the cross member and where the up pipe goes twords the turbo is dented down enough to clear the engine.

so you still need a new cross member but a WRX or GD cross member. and your control arms and power steering rack will clear.

Sway bar I have no idea on.

[bergdh]

does any one know where to find a good reliable engine to swap?

[FRNOEVO]

Even putting a nice turbo kit on your existing 2.5L engine would be a great rally-x setup. Boosted for extra power and nice and torquy out of the boost.

This is what I would strongly recommend, as it is the cheapest...

And probably the easiest.

http://yhst-49187380673845.stores.yahoo.net/avocotukit.html

The kit I always dream about.

Hmm.... Any Idea what turbo they use? I have a T3/To4 That I will be putting on soon, but I dont know yet if I should a tad bit smaller, I want LOTS of torque before 3k...

I am pretty sure it is an AVO 320S or possibly the next step down from it. Quick spooling, outstanding reliability, and solid power. AVO also used a solid boost actuator, as well. It is the absolute most consistent on the market today. I will call Sean at RalliTEK to find out about the turbo size this afternoon.

JD

[L and E Fab.com]

does any one know where to find a good reliable engine to swap?

Pisst... http://www.car-parts.com it is a awesome site to search for salvage parts.

[409industries]

GT28rs... How cute :twisted:

Don't forget this is a "Rally Car" and that is all it does so getting on boost is a must.

Small turbos spool quick as hell, exactly what you need on tight gravel roads... GT35Rs are for knuckleheads on the street.