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Old 11-03-2001, 08:33 PM   #1
QCK HNDA
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Default newbie with a question on turbos on 2.5rs...which ones...????

Alright...

I have decided to go with the 2001 - 2002 2.5rs...it suits my needs price wise and everything else then the wrx imo...

But...I am going to turbo the thing...first thing I am gonna do...

Now...I have done a search on the turbo's for the 2.5rs...and I know that the turbo for the 2001 will fit the 2002...

But...my question is...which turbo company / turbo do you guys recommend? I am new to the turbo scene...so I haven't got a clue...also...how much do these run? I have found one at www.forcedairtech.com/IMPREZA-RS-2-5.html/ is this a good kit...I like the price of it and the hp gain!!!!

Please recommend some kits to me, and the pricing if you got them...thnx a lot!!!!
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Old 11-04-2001, 02:47 AM   #2
scotty305
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do a search for info about the vishnu turbo kit. It's still pretty new (not sure if it's been installed in anyone's car yet), but it should be the best.
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Old 11-04-2001, 03:31 AM   #3
Scooby75
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I recommend the Ludespeed turbo kit. I have a stage 3 and couldn't be more happier with it, only problem is that you have to be careful with the tranny cause you put down a good bit of power with it, and aftermarket clutch (ACT) helps big time. http://Turbo_25rs.tripod.com
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Old 11-04-2001, 05:03 AM   #4
bensonwrx
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Wow! Stage3 turbo I am also VERY interested in turbo all of a sudden (I dunno jack about it, but still want it bad).

So Scooby75, at what psi you are running your baby? Fast compared to stock/CAI RS?

-Alan (Another MY98 Owner)
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Old 11-04-2001, 03:23 PM   #5
Graham
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About the Ludespeed Kit, I have heard that it has a bad design when it comes to the turbo oil return line. Tom is a really nice guy (he builds the kits) and is very helpful from what I have heard. Ludespeed offers a kit without and Intercooler that runs like $2300, and that is a 5psi kit. Thats a pretty good price if you want power for little money. With this though, you need to be careful about detonation so a S-AFC and an ITC (ignition timing controller) is important. Other than the oil return line that cools your turbo, haven't heard or seen any problems with the kit.

Another kit that isn't out yet but is said to be VERY nice is the SPO Motorsports/AVO Turboworld kit. This kit will most likely be out in January and is supposed to be adding an extra 100 HP with a ball bearing Garret turbo. I called em up and they said its gonna come with all the electronics necessary for a turbo 2.5 (but any amount of electronics won't guarantee NO problems). Check the kit out at WWW.SPOMOTORSPORTS.COM, click ABOUT US.

Then of course there is Shiv's much waited for and highly regarded turbo kit, but im not sure of the availability of the kit. You can check this kit out at www.vishnuperformance.com. Other than these kits im not to familiar with too many others. Some guys like to build there own kits. RalliSpec made great kits but unfortunately they are no longer in business (custom fabricated).

If you really want good info, then just do a search for "Ludespeed" or "turbo kits" and a bunch of stuff will come up.

Take it Sleezy

Graham
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Old 11-04-2001, 07:14 PM   #6
SSLegacyGT
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Question work on a Legacy?

Will these kits work on a 97 Legacy 2.5 GT? I read somewhere on this board that the 4EAT transmissions can handle up to 7 psi of boost from an aftermaket turbo, but it was suggested that an automatic transmission cooler be used. I got all that, and I was looking into turbos as well, but i haven't found any specific for Legacy's. I would imagine with the same engine as the RS it should be able to use the same kit, right? Just curious....


-Derek
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Old 11-04-2001, 08:47 PM   #7
Aphex
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I'm wondering what you heard about the ludespeed kits oil return line, I have a ludespeed kit and the return line is just fine, all downstream. also I think you may be confused when you say that the oil return line is to cool the turbo, this is not true, it's to allow flow of oil through the turbo, the Water lines are to cool the turbo down.

but as for the ludespeed kit, I like it a lot, Tom is a great guy willing to take a look at anything that you have a concern about. I personally would recommend it, but I am biased there's a lot of good kits coming out it looks like, the most anticipated being vishnu's kit of course.

eli
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Old 11-04-2001, 09:39 PM   #8
Graham
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Eli- What I meant to say was that the there seemed to be a lack of oil going into the turbo, which can signifigantly reduce the life of a turbo. I'm not sure why I put "oil cooling the turbo", but you are right the water does cool it. The kit that I saw looked like it had a sketchy way of getting the oil to the turbo, but I'm not sure how your kit is setup, this was on one of the first kits that Tom produced on an RS.

Since you mentioned you had a Ludespeed kit, which stage kit do you have? Have you had any problems/malfunctions with your kit? What kind of electronics are you running with your system? The reason I ask this is because I am thinking of buying his stage two kit and I want to see what people who have them say.

Graham
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Old 11-04-2001, 11:43 PM   #9
AZ-GT
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I have a Forced Air Tech Kit and am very pleased with it. Seems like the guys who attended the West Coast Meet / SEMA were too. Anyway call them and talk to Robert about the kits. Good luck with whatever you choose.
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Old 11-05-2001, 12:50 AM   #10
Aphex
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ok graham, just wanted to make sure we were on the same page, I don't feel that the turbo isn't getting a good supply of oil to it, I have the stage I setup.

I'm not sure if the kit that you saw was getting it's oil from the back of the block (as all the new ludespeed kits do) or towards the front at the same place as the stock oil pressure sender, either one should be fine though for the oil supply as it is pressurized, it is a -4 AN line for the supply.

right now I"m running the S-AFC that came with the kit (MY99) I get some detonation, and quite frankly I"m suprised that my engine hasn't blown yet (knock on wood) I'd highly recommend an IC be put on, I have one just need to fit it on. I feel that the reason that I'm getting detonation even in low temps. is because my charge pipe is jet-hot coated, so it's pretty much holding all the heat from the charged air in the pipe and it doesn't really dissipate all too well. that's my theory, hopefully I'll get my IC on soon.

still on the stock clutch and it's held up so far (knock on wood again), very very nice power gains even at just 5psi, it seems that all the companies out there still making kits are all of good quality, we've been able to weed out the bad ones I think (hopefully) hope this helps people

eli
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Old 11-05-2001, 09:00 AM   #11
Graham
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Eli-

Thanks for the info, very helpful. I can personally recommend the ACT Street Clutch. I have it on my car right now and it is much smoother than the stock clutch. It is rated at 302 lb. ft. I feel a large difference on my NA RS, and I have seen 1/4 mile times drop as much as .7 with the use ACT clutch.

I was suprised to hear that your car is detonating. You absolutely MUST put an intercooler on the car as it will majorly affect the way your engine performs. So at the moment you are only running a S-AFC, no RRFPR or Ingintion timing controller? I don't to much about timing for Subarus, but you might want to check into getting some of these things.

Well, I guess I was wrong with the delivery of oil to the turbo, just something that looked a little weird to me. Try to get that IC on ASAP, don't wanna blow the engine.

Take It Sleezy

Graham
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Old 11-05-2001, 11:37 AM   #12
bsquare
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Quote:
I can personally recommend the ACT Street Clutch. I have it on my car right now and it is much smoother than the stock clutch.
This is totally contrary to my own experience and the experience of many people. The ACT clutch for the Impreza is grabby and is believed responsible for accelerating the destruction of several gearsets. I'd suggest Clutchmasters, if you are upgrading the clutch. However, remember that a slipping clutch might be the difference between a functioning transmission and a big bag of gear teeth.


Ben
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Old 11-05-2001, 12:56 PM   #13
Graham
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Ben-

Why do you say that the ACT clutch is responsible for accelerating the destruction of gearsets. I know people with turbo RS's that have had them on their cars for thousands of miles.....we have obviously not had the same experiences. I have heard that the ACT Street clutch does slip if the application of power exceeds that of recommended use, but if run with "reasonable" power applications then I find in no way why it is damaging to your box. The ACT clutch is designed in conjuction with the stock clutch, just made much stronger (40%) than the stock unit. A friend of mine is running an ACT pressure plate with a Clutchmaster 6-puck, with 20 lbs. of boost, and it is holding up fine, so maybe part of the ACT is bad. Let me know if you know why the design of the ACT is damaging to the box.

Take It Sleezy

Graham
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Old 11-05-2001, 05:09 PM   #14
bsquare
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Its engagement is not smooth and this increases the shock load to the drivetrain, the first part of the drivetrain downstream of the clutch being the weakest.


Ben
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Old 11-05-2001, 06:21 PM   #15
Keiho
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Throw in Technik Motorwerks as well. The "old" Minnam kits, reasonable prices (especially when converting from CAD to USD) and I'm sure you could spec out the kit to what you want.

604-723-6763, ask for Ross. Tell him I sent ya.
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Old 11-06-2001, 01:08 AM   #16
Scooby75
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I am keeping my boost low. about 3psi. I don't wanna just hook it up and start pumping 9psi on the stock motor without any break in. I have the car getting a little work done on it now. a BPM 1/2 dog tranny, nothing wrong with my stock one, but better safe than sorry. But I never had any problems with the car. And at only 3psi, it blew my mind away, thank god for ball bearing turbos, my turbo spools at 2200rpm. One thing that does concern me is that there is no heat shield for the turbo but its nothing that can' t be easily fixed. Luckily I got a chance to meet Tom face to face at NOPI this year and he gave me a few pointers. But I'm 100% happy with my car. When I get everything working and in perfect order I'll be sure to post some times up. But if anyone doesn't wanna go turbo, I think N1 makes a Supercharger for the SOHC 2.5RS.
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Old 11-06-2001, 01:26 AM   #17
bsquare
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You might want to get the hot side of the turbo coated with JetHot 2000 degree...simpler than fabricating a heat shield.


Ben
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Old 11-06-2001, 08:39 AM   #18
Bahumut
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Question

I've heard that ACT clutches kill too. Something about them being super sticky and smashing up the gear sets at high amounts of power. Clutchmasters' kevlar slips then grabs, so it's probably safer for sudden boost kicks.
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Old 11-06-2001, 09:41 AM   #19
QCK HNDA
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Alright...

So...I have found some turbo kits that I like that are priced around 3-3500...so I am excited!

But...what else do I need done to my motor to run the turbo? What kinda clutch / someone said something about an aftermarket tranny / s-afc? /

Please let me know what I need to run the turbo...

btw...it's a Stage II turbo...running at 5psi...

Thnx...
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Old 11-06-2001, 11:55 AM   #20
STiShawn
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I run an ACT street clutch. If you abuse it and dump it all the time, do lots of drag starts and dont know how to shift smoothly it WILL destroy your tranny. But if you shift properly, double clutch second (down shifting) it will be fine....BTW I have a ludespeed stage 2+ and the kit is great! Tom is grade A to deal with, professional, prompt and knowledgable.
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Old 11-06-2001, 02:51 PM   #21
Graham
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If you abuse it and dump it all the time, do lots of drag starts and dont know how to shift smoothly it WILL destroy your tranny. But if you shift properly, double clutch second (down shifting) it will be fine


I agree.
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