Building my NA 2.5rs motor to a STI version

SUBEFREAK · 08-07-2004, 02:00 AM

I believe the block is the same as the STI motor. Couldnt I just throw STi internals and heads, Turbo and the other STI components and everything would work? I know I would also have to change the ECU and all. Basicaly what do I have to do to get it to have the STI performance?

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elijah25rs · 08-07-2004, 02:25 AM

Tranny? Diffs? Axles? etc.

There is more to it, I'm sure someone less noobish as myself can help you but it isn't 'easy'.

HndaTch627 · 08-07-2004, 03:02 AM

Quote:

Originally Posted by SUBEFREAK

I believe the block is the same as the STI motor. Couldnt I just throw STi internals and heads, Turbo and the other STI components and everything would work? I know I would also have to change the ECU and all. Basicaly what do I have to do to get it to have the STI performance?

read n00b, your block is no where NEAR an STi block

i mean seriously, where do people come up with this stuff

Kostamojen · 08-07-2004, 03:10 AM

Quote:

Originally Posted by SUBEFREAK

I know I would also have to change the ECU and all. Basicaly what do I have to do to get it to have the STI performance?

Everything from the STI minus the chasis. That should cover it.

HndaTch627 · 08-07-2004, 03:10 AM

Quote:

Originally Posted by Kostamojen

Everything from the STI minus the chasis. That should cover it.

kevin2.5rs · 08-07-2004, 09:37 AM

just do a engine swap.
It's better if you want your engine to last.

JonofScio · 08-07-2004, 10:31 AM

yeah... your block is like, open deck and missing alot of turbo parts... whereas the STi block is semi-closed deck and has all those turbo parts.

You're block wouldn't handle a crapload of power without major modification.

RS_to_WRX_swap · 08-07-2004, 03:03 PM

You guys are all wrong, all 2.5L motors are the same....

Charge · 08-07-2004, 03:27 PM

ooh...ooohhh...send him over to AFI so Kastle can blow his top!

Boxologist · 08-07-2004, 03:52 PM

he is looking for indiglo gauges for his '04 RS too.

kid, ur off to great start here...

SUBEFREAK · 08-07-2004, 04:21 PM

Was doing some research and found a website called http://www.xcceleration.com/imp-index.html and they sell sorts of parts just mainly for the subaru impreza. They had fully built racing motors but the cost like 20 grand or more. These motors are preety much like 650 horsepower and more. They also sell performance heads, blocks, internals and more.

ethereal · 08-07-2004, 04:51 PM

Quote:

Originally Posted by SUBEFREAK

I was doing some research and found a website called http://www.xcceleration.com/imp-index.html and they sell all sorts of parts mainly for the Subaru Impreza. They have fully built racing motors but they cost like $20,000+. These motors are 650 horsepower and more. They also sell performance heads, blocks, internals and more.

So you go from asking a question to telling us a website that sells fully buillt motors? Go read the FAQ.

-Andy

HndaTch627 · 08-07-2004, 05:51 PM

Quote:

Originally Posted by SUBEFREAK

Was doing some research and found a website called http://www.xcceleration.com/imp-index.html and they sell sorts of parts just mainly for the subaru impreza. They had fully built racing motors but the cost like 20 grand or more. These motors are preety much like 650 horsepower and more. They also sell performance heads, blocks, internals and more.

and if you believe that i would like to sell you some land in Florida, comes really cheap

Tarmac02 · 08-07-2004, 05:55 PM

Quote:

Originally Posted by Boxologist

he is looking for indiglo gauges for his '04 RS too.

kid, ur off to great start here...

dammit... why do there people buy the car...

I saw a GC with chromie tail lights last night... he prolly wants those too

n00b here also posted asking if there were subie owners in Southern MD... in the General forum

tooocool49723 · 08-07-2004, 07:53 PM

Quote:

Originally Posted by HndaTch627

and if you believe that i would like to sell you some land in Florida, comes really cheap

If you've been to florida, you know why that's funny.

Anyway, Why do people buy Altezza's?? their so stupid, just go to SOA and get some STI tails, much cleaner.

I wish Toyota never invented the altezza. Started a trend that just doesn't know when to die. And now their putting it on most of lexus's cars...

SUBEFREAK · 08-07-2004, 10:12 PM

Altezzas are peices of **** meant for hondas and acuras

HndaTch627 · 08-08-2004, 12:47 AM

Quote:

Originally Posted by SUBEFREAK

Altezzas are peices of **** meant for hondas and acuras

i'll remember that next time you ask for advice

4 yr Honda Certified Tech
ASE Certified Automotive Tech

and the cars i work on riced out a lot less then the Subaru's lately

YaZahX · 08-08-2004, 01:52 PM

i dont see why everyone has to be a dick to the guy. unless u wanna help and explain things dont insult him.

the sti and 2.5l blocks are totally difefrent, the internals are stronger on the sti, it has 8.2:1 pistons and semi closed deck.

the rs block has smallrods, 10:1 pistons and open deck. the looks of allej series parts do look aike but there are differences when u look into them.

oh and hondas dont need those lights, all they do is need a turbo running 8 psi and they are set

SUBEFREAK · 08-08-2004, 02:44 PM

Thanks, I think I will probally do a swap when my warranty runs out. Kinda hard doing when your active in the millitary though. Yea all those honda and acuras need are those turbos. I got my ass handed to me when a civic beat me on the quarter mile when he ran a 11.3. That car looked so damn stock.

subi_2.5rs · 08-09-2004, 11:42 AM

swap civic it is....prelude h22 si....i dont know hondas......

Soon2Bgreat · 08-09-2004, 11:49 AM

Guys quit being dicks. Don't worry man, all you need is the following to make this work.
-Semi close your block
-new pistons
-new rods
-new crank
-new cams
-new heads
-new springs/retainers
-add an upipe
-add a turbo
-add a downpipe
-new airbox
-add an intercooler
-add an inlet pipe
-new engine management

I think that's it, i might be missing a few things, but you get the point. Let us know how it turns out

iamrazor · 08-09-2004, 12:30 PM

um, i think the only things that are the same is the displacement....

Kostamojen · 08-09-2004, 03:24 PM

Well the design of the shortblock is technically very simular, minus the semi-closed segment on the STI shortblock and one or two other small things...

Honkey3k · 08-09-2004, 03:31 PM

the STI and normal EJ25 block are built differently.

SUBEFREAK · 08-09-2004, 04:08 PM

What does semi closed actually mean?

08-07-2004, 02:00 AM	#1
SUBEFREAK Scooby Newbie Member#: 67637 Join Date: Aug 2004 Location: Southern, MD Vehicle: 2004 Impreza R.S java black pearl	Building my NA 2.5rs motor to a STI version I believe the block is the same as the STI motor. Couldnt I just throw STi internals and heads, Turbo and the other STI components and everything would work? I know I would also have to change the ECU and all. Basicaly what do I have to do to get it to have the STI performance? * Registered users of the site do not see these ads.

08-09-2004, 11:42 AM	#20
subi_2.5rs Scooby Newbie Member#: 67538 Join Date: Aug 2004 Location: ghettofornia Vehicle: 2003 impreza wrx black/blue/purple	damn..... swap civic it is....prelude h22 si....i dont know hondas......

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08-07-2004, 02:25 AM	#2
elijah25rs Scooby Specialist Member#: 59711 Join Date: Apr 2004 Chapter/Region: NWIC Location: Portland, OR Vehicle: 2005 WRX Crystal Grey Metallic	Tranny? Diffs? Axles? etc. There is more to it, I'm sure someone less noobish as myself can help you but it isn't 'easy'.

08-07-2004, 09:37 AM	#6
kevin2.5rs Scooby Specialist Member#: 67518 Join Date: Aug 2004 Chapter/Region: NESIC Location: Bean town Vehicle: 0000 none none	just do a engine swap. It's better if you want your engine to last.

08-07-2004, 10:31 AM	#7
JonofScio Scooby Newbie Member#: 53595 Join Date: Jan 2004 Chapter/Region: NWIC Location: nowehres Vehicle: 1987 GL Hatch EA81 1.6L + Weber	yeah... your block is like, open deck and missing alot of turbo parts... whereas the STi block is semi-closed deck and has all those turbo parts. You're block wouldn't handle a crapload of power without major modification.

08-07-2004, 03:03 PM	#8
RS_to_WRX_swap Scooby Specialist Member#: 40337 Join Date: Jul 2003 Chapter/Region: BAIC Location: Bay Area Vehicle: 95 L Coupe Swapped 99 Outback	You guys are all wrong, all 2.5L motors are the same....

08-07-2004, 03:27 PM	#9
Charge NASIOC Supporter Member#: 3313 Join Date: Dec 2000 Chapter/Region: MWSOC Location: Cincinnati	ooh...ooohhh...send him over to AFI so Kastle can blow his top!

08-07-2004, 03:52 PM	#10
Boxologist Scooby Guru Member#: 21118 Join Date: Jul 2002 Chapter/Region: Tri-State Location: LI, NY	he is looking for indiglo gauges for his '04 RS too. kid, ur off to great start here...

08-07-2004, 04:21 PM	#11
SUBEFREAK Scooby Newbie Member#: 67637 Join Date: Aug 2004 Location: Southern, MD Vehicle: 2004 Impreza R.S java black pearl	Was doing some research and found a website called http://www.xcceleration.com/imp-index.html and they sell sorts of parts just mainly for the subaru impreza. They had fully built racing motors but the cost like 20 grand or more. These motors are preety much like 650 horsepower and more. They also sell performance heads, blocks, internals and more.

08-07-2004, 10:12 PM	#16
SUBEFREAK Scooby Newbie Member#: 67637 Join Date: Aug 2004 Location: Southern, MD Vehicle: 2004 Impreza R.S java black pearl	Altezzas are peices of **** meant for hondas and acuras

08-08-2004, 01:52 PM	#18
YaZahX Scooby Specialist Member#: 11932 Join Date: Nov 2001 Chapter/Region: Tri-State Location: NY Vehicle: 1998 CW ITR 2006 NBP SI	i dont see why everyone has to be a dick to the guy. unless u wanna help and explain things dont insult him. the sti and 2.5l blocks are totally difefrent, the internals are stronger on the sti, it has 8.2:1 pistons and semi closed deck. the rs block has smallrods, 10:1 pistons and open deck. the looks of allej series parts do look aike but there are differences when u look into them. oh and hondas dont need those lights, all they do is need a turbo running 8 psi and they are set

08-08-2004, 02:44 PM	#19
SUBEFREAK Scooby Newbie Member#: 67637 Join Date: Aug 2004 Location: Southern, MD Vehicle: 2004 Impreza R.S java black pearl	Thanks, I think I will probally do a swap when my warranty runs out. Kinda hard doing when your active in the millitary though. Yea all those honda and acuras need are those turbos. I got my ass handed to me when a civic beat me on the quarter mile when he ran a 11.3. That car looked so damn stock.

08-09-2004, 11:49 AM	#21
Soon2Bgreat Scooby Specialist Member#: 2258 Join Date: Sep 2000 Chapter/Region: Tri-State Location: Irvington, New York, USA Vehicle: 1999 gc8 ver7 6mt GT35R 504.7whp;)	Guys quit being dicks. Don't worry man, all you need is the following to make this work. -Semi close your block -new pistons -new rods -new crank -new cams -new heads -new springs/retainers -add an upipe -add a turbo -add a downpipe -new airbox -add an intercooler -add an inlet pipe -new engine management I think that's it, i might be missing a few things, but you get the point. Let us know how it turns out

08-09-2004, 12:30 PM	#22
iamrazor Scooby Guru Member#: 52324 Join Date: Jan 2004 Chapter/Region: NESIC Location: Pelham, NH Vehicle: 2011 SWP WRX LTD 1990 T30 miata	um, i think the only things that are the same is the displacement....

08-09-2004, 03:24 PM	#23
Kostamojen Scooby Guru Member#: 2272 Join Date: Sep 2000 Chapter/Region: BAIC Location: haha XD Vehicle: 95 L AWD LIFTED!!! 1970 Subaru FF-1 Coupe	Well the design of the shortblock is technically very simular, minus the semi-closed segment on the STI shortblock and one or two other small things...

08-09-2004, 03:31 PM	#24
Honkey3k Scooby Specialist Member#: 53992 Join Date: Jan 2004 Chapter/Region: BAIC Location: Chico, Ca Vehicle: SOLD CGM 2005 2.5RS 35 PSI -- in my tires	the STI and normal EJ25 block are built differently.

08-09-2004, 04:08 PM	#25
SUBEFREAK Scooby Newbie Member#: 67637 Join Date: Aug 2004 Location: Southern, MD Vehicle: 2004 Impreza R.S java black pearl	What does semi closed actually mean?