Whats needed to turbo a 05 rs

[Mighty Subie]

The problem with all of the supercharger kits is that they always have huge issues with them. I don't mean any sc for anything but the ones on subarus. I wish kbb would weigh in on this. he has done more research lately than he'd probably admit to.

 

[Chris]

If you can fabricate, you can use any supercharger. Probably a lot cheaper than a subaru kit too.

 

[scubiecraig]

I haven't heard much good about the Raptor Superchargers here in the States. I was looking into one myself, but for that price, I'd rather save my pennies and just get a WRX at that point.

 

[Mighty Subie]

If you can fabricate, you can use any supercharger. Probably a lot cheaper than a subaru kit too.

Well not really. The ones you see on v8s (the rotory screw style) will not work. You'd need a helical (like a procharger) to have it work. I'm thinking about it now though. Remove the ac pump, relocate the battery to the trunk and put it on the drivers side. Doesn't seem like too huge of a pain. It's probably just a pipe dream for having it work right but the torque curve is a lot more linear than a turbo. The downfall is that they take more power to run. It's not uncommon to have a supercharger take 100 HP to run on a v8. So even on this smaller engine, you'd need to work the engine a little harder to make the same power bute no lag.

 

[GClark]

I believe they will work.

http://www.rs25.com/forums/f7/t92852-my-m62-supercharger-build-diy-how.htmlhttp://www.rs25.com/forums/f7/t92852-my-m62-supercharger-build-diy-how.html

 

[abenson100]

Well not really. The ones you see on v8s (the rotory screw style) will not work. You'd need a helical (like a procharger) to have it work. I'm thinking about it now though. Remove the ac pump, relocate the battery to the trunk and put it on the drivers side. Doesn't seem like too huge of a pain. It's probably just a pipe dream for having it work right but the torque curve is a lot more linear than a turbo. The downfall is that they take more power to run. It's not uncommon to have a supercharger take 100 HP to run on a v8. So even on this smaller engine, you'd need to work the engine a little harder to make the same power bute no lag.

power drain my problem with SC. I know lag sux but I am extracting energy that was just being tossed aside with a turbo. a SC is allways pulling power from your car, so when you were only using say 10HP to cruise down the highway at 65 now takes you 30hp. this is means your gas milage goes down everywhere. with properly set up turbo I can gain milage in certain areas (and drasticly lose it in others). you could allways duel charge your car like people are doing to the mini's

 

[Matt]

Yep.... Don't you have one g?

 

[Killerbumblebee]

As MightySubie mentioned I have some experiance with this. There have been some good posts, and some..less good ones that I read. Anyone can tell you to be a better driver. That has nothing to do with the performance of your car. We all know people with Sti's who have no idea how to drive, and people with 1.8 impreza's that are amazing. My feeling is that the posters true question is what to do with what rout to go to increase the performance of his car.

Owning a 05 RS, the first thing I would say is that it is MUCH cheaper to upgrade the handling and braking than the power. It's amazing how much more fun it is to drive with a good set of 06+ wrx struts and springs, and upgraded brakes. Additionally all of these parts are compatable with an older wrx if you do deside to get a new car.

The path of buying a wrx or upgrading the power of your RS is a persinal one. Truth be told, it depends on what you plan on doing. If you want another 30-40 HP, you can get a set of good cams for cheap from delta, upgrade your intake and exaust, and get a tactrix cable (05+ RS's are open sourse) and get around 200 without to much trouble. No need to play with the engine, and definitly noticible. If your looking for WRX power...get a wrx. the RS block is not designed to take boost, and turbo kits can only get up to around 6 psi safely, for maybe 210-220 hp. The cost involved in this level of power just isn't worth it.

If your very mechanically savy, or have friends who are, and are looking at building a bunch of power, it is possible to make amazing power out of the stock configuration. RS heads flow very well. But you need to look at all of the systems that need to be upgraded for the HP. First, you need a 2.5 WRX or Sti block, and a set of forged SOHC pistons. That block, with those pistons, are capable or taking tons of power. Then the heads have to be gone over, the valve springs woun't take the power, they need to be replaced. Also, the camshafts should be upgraded. Then you just need a turbo kit. But wait...the transmission can't keep up with the power. You can upgrade the gears and redo the syncro's to 05+ legacy gt gears (which are the same as jdm sti). If you get all of this stuff at list price, and don't do the work yourself, your looking at 10K+, but you do get a much better system than a stock wrx. I got just about everything at significantly less than that, and I plan on doing most of the work myself. I guess the answer to your original question is that it is possible, but it depends on your ability as a mechanic, and what you want out of your car. I can answer that for you, but if you want any information about my plans, let me know.

 

[Mighty Subie]

Thanks for finally chiming in slow-poke!

So list of mods:

1) you. Only you know how well you are able to drive. Do you need more training?

2) suspension. A good handling car out performs one with more power If you do more than drag racing.

3) power. Cams, exhaust/intake and a tune = about all you want through the engine to keep it away from self destruct mode. Plus no lag and better mileage than forced induction.

4) you go big or go home (in the power dept) and now your drivetrain can't take it: so a trans rebuild is in order after you just spent a lot on the engine.

I tried to sum it up. My 02 wrx was tuned at about 285 crank HP. That kept it within the range that those trans and engines were able to handle. 300+ and those trans went boom if you weren't careful. My new car needed a rebuild because it had too much power and wasn't babied so now it has a new block in it. Yes I know we aren't talking the same setup but you will only be putting 6ish psi in it on higher compression pistons. Sooo the higher the compression pistons you have, the less they like boost. still doable. Just less forgiving.

I love big power so don't think I'm being a buzzkill. I want to see you get everything you can out of it. But I'm trying to be realistic and provide the 'best' and cheapest options.