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Rickyrum23 03-19-2011 07:36 PM

I have an 02' WRX and the head gasket and the Heads went on me. So, it brings me to this point; does anyone have any suggestion about how I should rebuild it. I was thinking about getting an STI block, 20g turbo, front mount intercooler for it for starters, but not sure what else. I would like to get somewhere around 400 to 500 hp out of it! I would be very grateful for your input.......

basco 03-19-2011 07:46 PM

for 4-500hp you'll need a built shortblock and alot more than a 20G, more like a 35R, your best bet for that would be to just sleeve your existing block with 100mm sleeves and use an STi crank, if you do all the work yourself you'd be looking right around 3500 for the motor, 1200 for the turbo plus injectors, tune, and FMIC of your choice

basco 03-19-2011 09:53 PM

ohh and for that power you'll be needing a trans upgrade real soon so add 3500-5000 for a five speed rebuild or 6-8000 for a six speed swap

RcrsWetDream 03-19-2011 10:37 PM

1 Attachment(s)
Yep, hope you have at least 10k ready to spend if you want it to last more than a week.

Built short block at a minimum - $2,500
Head work to get any decent results with a big turbo, and to get the combustion chambers machined to work with the 2.5L bottom end - $2,000+
Transmission because yours will explode in no time with 400-500hp (even if it is crank)- $4,000+
Turbo, FMIC, Injectors & other fuel system, Inlet, Intake, etc to support big turbo= $3,000+

Rickyrum23 03-20-2011 12:33 AM

RcrsWetDream and Basco thanks so much for your help. I'm saving the money for it now. I know that it's gonna cost a lot, but I love my Subbie to much to let it go, so I'm gonna fix it. After all, when the motor is out; why not go all out. What trans would you guys say would be good for it? It has the stock one in it now. Unfortunately, I don't have the means to fix it myself, so I have to pay this performance shop to do it for me. Oh, yeah! What kind of Roll cage should I go with? 5pt, 7 pt, or the full?

basco 03-20-2011 11:51 AM

I would go with a PPG helical set, and as for a cage if it's going to be a street car I wouldn't do anymore than a harness bar or a half cage at most, when you add the halo bar and a-pillar bars on a daily driver you would need to wear a helmet everywhere or risk serious head injuries if you ever got in an accident

Hondafan 03-20-2011 01:21 PM

[quote=basco;258145]if it's going to be a street car I wouldn't do anymore than a harness bar or a half cage at most, when you add the halo bar and a-pillar bars on a daily driver you would need to wear a helmet everywhere or risk serious head injuries if you ever got in an accident[/quote]

I wouldn't do a different seat harness for a DD again either. I had a 4 point harness in my Prelude, and it was great for driving hard through corners, and let's be honest, it looked cool, but it was not practical enough for daily driving as I'd drop something at the drive-thru and not be able to pick it up without undoing the seatbelt first. Those types of things never crossed my mind when I was installing them. Needless to say I won't put them in again until I have a dedicated track car.

I guess the best question comes down to what you really want to use the car for.

For 400 CHP you can use a 20G, but you need to go bigger for 400+ WHP, like Matt said. Injectors will run you 4-500, and the fuel pump is 100-170. My build so far, without having to buy a new block or crank, has come to about $3500. I haven't even gotten the bigger turbo or intercooler just yet. I've been looking to spend around $14-1500 on the turbo, and 12-1300 for the FMIC. Just be ready to spend money, that's all I've got to say.

basco 03-20-2011 01:51 PM

brad thats why you leave the factory belts in too, you only use the harnesses for racing

Hondafan 03-20-2011 02:06 PM

That was my biggest mistake right there. Good call.

turmic 03-21-2011 12:30 PM

Rickyrum23: Which performance shop are you going to?

Rickyrum23 07-26-2011 03:23 PM

My 02' WRX
Hi, Guys! Sorry, I haven't been around for awhile. I think it's time to fix my 02' Wrx and I need some help. I'm not going to do what I wanted to do at first because of money. But here is what I want to do for now. I need to rebuild my motor and I would like for it to have around 400hp, what can I do to get it there? I will get the front mount intercooler and tuned once the motor is done. What injectors, pistons, etc should I get??? Any help with this would be gr8 because I miss my Subbie.....Thanks, Guys!!!

psinuse 07-26-2011 03:41 PM

400 crank or wheel horsepower?

Rickyrum23 07-26-2011 05:11 PM

Sorry, I was talking about having around 400 WHP

psinuse 07-26-2011 06:41 PM

I take it you already have a full exhaust and some method of tuning, or a tuner correct? If so then Umm let see...
Turbo GT30R or bigger
1200cc injectors(minimum)
Shortblock with forged pistons(either a new 2.0L or 2.5L)
Piston choice is up to you, most use CP, I use Wossner the list goes on.
You could get away with out head work, but it won't hurt.
Maybe meth injection(for the car not for yourself lol)
STi cams will help but not required, since you have the heads apart and if the price is right.
Oh and get ready for a trans rebuild sooner or later...That should about cover it. I'm sure there's more, but I'm at work right now and kind of busy...

turmic 07-26-2011 09:03 PM

He is going to need a lot more unless the meth or E85 gets him there. Because I know my tuner doesn't tune/work with meth or E85.

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