Join Date: Jun 2005
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To those who think this is BS. Look I am no Automotive expert. I am not even a mechanic. I just always wanted to build my own sports car. I was considering buying a Pontiac G6,G8 and GTO. I also looked at the Honda Civic , S2000, Nissan 350z, Infiniti G35,G37s, Hyundai Genesis Coupe, Mitsubishi Lancer Evo and then I looked at the Impreza and realized this was the car I wanted. So I bought me one. A black 2003 WRX with 83,176 miles on it.
I just wanted a tried and true formula for me to follow. Including the exact parts and set up. I mean exact. I will copy a proven setup step by step.
If 500-600hp will get me 9 seconds in the quarter mile then that is fine with me. I am just a man who wants massive power its only natural.
What is the most reliable 500-600hp set up. I dont care if it is the most common. I just want good advice before I spend my cash.
For starters I am going to buy the Gruppes Gs700 engine already built to go. From there I have no idea what exhaust or turbo to get. Also I want a strong Transmission as well. A proven winner that many have used before. Is a six cylinder swap possible?
Maybe I should have said this is my very first auto project. LOL! Oh well I have the body kit and paint job all planned out. I just want to make sure this baby can fly when I am done.
Honestly, it is going to take a LOT of work to build yourself a 9 second car. You're in for quite a project, especially since you know nothing about what you want to build. My advise would be go to a local shop that seriously specializes in Subarus and has had experience in building and working with 9 or 10 second Subarus. Your going to need a huge turbo like a gt35/40/42r, some major fuel work, roll cage, stronger tranny/motor and many, many other things including stuff that meet the regulations of running a 9 second car on the track. Are you planning on driving this car yourself? Have you ever even driven a 400awhp car? Also, it's not going to be reliable. So basically, what i'm trying to say is find a shop that is serious into Subarus and talk to them about your build. This thread talks about wanting a 400hp car, nowhere near what you're looking for, but very informative none the less. Public Service Announcement. "I want 400whp!" Are you sure? - NASIOC
Here are just a few quick links i found with some fast cars and an idea of what their mods are.
AMR Build: Performance Chemicals, LLC. 2006 Subaru STi - 800+whp - More PARTS! PICS! - IWSTI.com: Subaru WRX STI Forums
40psi + HTA86/1.06 + AEM = WOW - NASIOC
There is no "Tried and True" formula. A lot rests on the tune. Nont to mention the parts in particular. Look around at the other memebers. There are so many guys that run the same 16g, 20g, even the stock turbo that have power rages all over the place. The same parts on different engines will run different. There are so many variable that come into account.. Even the same engine builder can try to build two identical motors and one will run be stronger, run better, and be more reliable. There are flaws in parts, clearance issues and other factors that really change things.. So what I'm saying even if you copy someones setup it doesn't mean that you will get the same result, it should be close but that doesn't mean it will be as reliable or as fast... You use the same parts that I have and I still couldn't give you my tune..
500whp will not get you into the 9s with a WRX. You are also kind of shooting your self in the foot with the Automatic. That will need built and stalled..
Your definitly going to need:
Nos to spool the hugh turbo at the launch
Hugh turbo, Gt40 or better really.
Go twin scroll if you can foot the bill = much better spool for faster acceleration.
I would look into a fully blueprinted and ballanced 6 cylindar swap.
strong stand alone with a VERY SOLID tune.
Talk to Ron at Raw1performance.com.
Now keep in mind that all this stuff kills longecity.
Meth doesn't compress like air so it puts more stress on bearings.
Nos is not very compatible with the Subaru motor..
A big turbo with high boost puts hugh stress on all internals.
So if you build it you will have a lot of work to keep it running properly.. It's not going to be around for 100,000 miles..
All right thanks for the advice. So a Six cylinder is possible. Cool. I have read about the H6 swap. Have many users been driving this successfully?
Anyhow I have a lot of research to do. I am lucky I work right by the Gruppes actually home base in Lake Forest right by Irvine California. I am going to drive there and ask alot of questions. Gruppes is where I will be buying the block. I also wonder if they can make a titanium block? Will it be stronger then a normal block? A titanium 6 cylinder block? Himmmm...
Anyhow I will post before and after pics once I start. I am excited but I know I have alot of work to do.
Wouldn't it be easier to just do a custom build. Slap a Porsche H6 that's fully built and upgraded. I mean the porsche motors are a little bit more capable of 700 hp. But, Its not going to be easy at all...god knows if you can get a porsche engine to bolt up to wrx drivetrain. I was just thinking that might be slightly more reliable than a stressed out subaru engine.
I am doing a whole lot of research right now. I just read about a guy who put a v8 into a Nissan 350z. I know its not a suby but I was just reading the article.
Anyhow I think I am going to go the H6 route. I am probably going to aim for 300-400hp first. Then go from there. I also found another good website for subies.
Xcceleration - Subaru WRX STi Forester XT Legacy GT Baja Turbo Performance Parts
Setting your goal on a HP number is 100% the wrong way to go. A 700whp N/A 6.0L V8 is a totally different beast than a 700 AWHP 2.0L/2.5L flat 4. You picked the wrong platform for drag racing.
IMO i think putting a V8 into any import kinda defeats the purpose of owning these cars. If you want that much power why not start out with a Supra or some other 6 cylinder platform....When you take one car and slap another car companys motor in it i think its kinda dumb to own the car in the first place. Unless your putting a 350 into a ford or something.. thats okay
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