turboing 2.5 rs 2004.... how to????

If you wanna push more than 7-8 lbs, I'm sure you'll need to change the heads. Honestly I don't think it will be worth doing. I've got an sti longblock I'll sell for the right price though

 

1- No

2- Turbo, intercooler, exhaust piping, injectors, fuel pump, engine management, etc.....

3- You can find used turbo kits for $1000-$2000, search around

Better solution? Swap a WRX or STi motor..... less expensive (in the long run), more power, more reliability..... the RS motor won't stand up to much boost.....

 

You don't need to change the heads for more than 7-8psi. It's the pistons you gotta change.

 

painful route, this one is

IIRC Ludespeed made a kit

 

WRX or STi swap is the way to go. Like previously said, it'll be much easier/cheaper in the long run.

 

I would just do a STi swap and I amagine you would need to think about EM

 

Doing a WRX swap would be cheaper/easier

 

hold out for a WRX block I got a feeling that there will be a couple of them up for sale soon :coolugh:

 

so you gonna get that turbo from me, or not?

 

I'd recomend selling your car, or trading it in on a wrx or sti. If its as clean as you said it is you should have no problem on trade in. You'll end up paying what it would have costs to swap it without the headache of doing it.

And if you do swap it, there's no real significance of your 04 body style, if it was a Gc or a wagon it would be worth it because it will be different. Your 04 sedan will appear to be just another wrx.

 

Well... I bought my motor for $3500. You'll need another transmission so add about 4k to that. I don't know what kind of engine management you will need.


All of that doesn't include labor.

 

$8-10k if you do it right. best bet is to buy a wrecked car and part out what you dont need/want

 

You can piece together a turbokit out of spare parts for less than $2000 if you do it right. Search rs25.com

 

I second this idea.

 

well alternative ? what if u decide to go n/a what will it take to run with the turbos?

 

Danny what are you talking about? Do you mean you want to convert to N/a? If that's what's u want, you and this kid should just trade

 

Uppipe, downpipe, turbo, intercooler, wrx subframe, wrx waterpump, various lines and such.

 

IIRC the most HP out of a 2.5L NA subaru motor is around 300whp. An NA 6cyl will make more power and torque but weigh more and be a pain in the ass to swap.

Get a motor and tranny if you want to keep the shell or just trade in your car for an STI or WRX.

 

Allow me to ASSURE you that in the long run you will be MUCH happier (and richer) selling your RS and buying a WRX or STi.

Siegel

 

No. Only in displacement, stroke, bore, oiling system design and crank design.

the EJ251/253 is open deck. The EJ255/257 is semi closed deck. The EJ255/257 have forged rods and hyperutectic (sp?) cast pistons which are much stronger than your stock ones. Those are the important differences.

You will need to drive to the nearest SUBARU dealership and trade in your RS for an 06~07 WRX, or an 05~06 STi. You will be MUCH happier this way.

Depends on what they give you for trade in. You can find excellent condition 05 STi's for $20,000 to $24,000. 06~07 WRX is similar in pricing depending on mileage.

But cost for a swap/build? It'll end up costing you as much as buying an STi or WRX.

Yes, most of it pretty much bolts up thanks to SUBARU cutting costs everywhere and making everything universal.


Again, as everyone else has stressed, dont try to swap/build it. Just buy a complete running car and drive it. Its not worth the hassle and money spent.