number 1 is it the same block as the sti number 2 what will i need? number 3 how much? and will the sti parts bolt straight up 2 the 2.5 rs block..... such as the intake and exhaust manifold... if so then will i just be able to get the sti or wrx turbo, tmic,y pipe, ecu......etc...etc
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.....
WRX or STi swap is the way to go. Like previously said, it'll be much easier/cheaper in the long run.
hold out for a WRX block I got a feeling that there will be a couple of them up for sale soon :coolugh:
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.
You can piece together a turbokit out of spare parts for less than $2000 if you do it right. Search rs25.com
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
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.
ok well thanks everyone for your input but to let everyone know i have listed my subaru for sale and hope to have a wrx by the end of the summer