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Old 06-22-2004, 06:49 PM   #1
analogvoid
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Default Interested in building Imprezza 2.5RS

Hello all,
I'm new here and have been interested in building a 2.5RS for street use. It's one pf my favorite cars and I always thought a project 2.5RS would be a fun gig. I just wanted to hear what some of you think as far as that project. What motor would you use? Etc Etc. I'm aiming for a 12-13s street car. Just for fun. How would you go about achieving this with a 2.5RS ? Thanks alot.
-MARC
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Old 06-22-2004, 07:31 PM   #2
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WRX motor swap... or you could turbo the 2.5, but the swap seems the most reliable way to go.

If you wanna run 12's though, this might not be the car for you.

john
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Old 06-22-2004, 07:35 PM   #3
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I agree with ButtDyno. Just aiming to run 12s....well, an AWD car isn't necessarily the best way to do it. You can pick up an SRT-4 for not a whole lot, a $50 manual boost controller, borrow some sticky tires and hit a 13.1 1/4mi without trying. Very fast for the money. The beauty of Subarus doesn't lend itself well for solely 1/4mi speed. It's a wonderful compromise car that does a lot of things well, it's just not a great drag car.

Good luck!
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Old 06-22-2004, 07:46 PM   #4
analogvoid
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I heard something about converting a wrx to rwd. Can this be done with the 2.5RS. Wouldn't it then be more practical for drag?
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Old 06-22-2004, 07:54 PM   #5
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Quote:
Originally posted by analogvoid
I heard something about converting a wrx to rwd. Can this be done with the 2.5RS. Wouldn't it then be more practical for drag?
That's hardly practical I would think. Why not take your Celica and convert it to RWD instead? I don't think either are good options.

Depending on the year of the RS, the transmissions are similar...but why would you buy an AWD car then make it RWD only to drag-race it?

Good Lord buy something else for drag racing!

If you really want to take the drag racing route, ESX is selling a built motor and transmission at around the 740hp mark that you can pick up for about $40k. You'll run somewhere in the low 10s or maybe better. (That's $40k installed by the way.)
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Old 06-22-2004, 08:01 PM   #6
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Buy a Mustang if you want to drag race.

Buy a Subaru if you want to drive worry free for 200+ thousand miles in any weather conditon and feel absolutely safe.
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Old 06-23-2004, 02:29 AM   #7
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Quote:
Originally posted by hondaslayer
Buy a Mustang if you want to drag race.

Buy a Subaru if you want to drive worry free for 200+ thousand miles in any weather conditon and feel absolutely safe.
Exactly what I was gonna say.
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Old 06-23-2004, 09:00 AM   #8
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Quote:
Originally posted by hondaslayer
Buy a Mustang if you want to drag race.

Buy a Subaru if you want to drive worry free for 200+ thousand miles in any weather conditon and feel absolutely safe.
... and have fun doing it.
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Old 06-23-2004, 11:10 PM   #9
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Impractical, maybe for you, but i wouldn't go as far to say doing something as a project that you'll enjoy is impractical. If I wanted to take the easy route I would buy a fox body mustang and take it to the strip. However, I'd actualy like a project. Using the 2.5RS as strictly a drag car is not exactly what I had in mind, but here in florida, we don't get adverse weather conditions, like snow, sleet, etc. I have no use for a AWD car here. Now maybe I'm wrong, but I heard it was relatively simple to convert a 2.5RS to RWD. I like the Imprezza, specifically the 2.5RS. I thought it would be a fun project to make it rear wheel drive, because personaly, i like that setup better. The way you guys are responding makes me feel like buying a subaru is meant for driving in snow.. and only that. I don't know if I'll end up with a 2.5RS, i was just tossing the idea around, i might build a 2nd gen MR2 or something else... but again, i thought a RWD 2.5RS would be unique and an interesting ride when tuned properly. Sorry if i ruffled some of you AWD guys' feathers.
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Old 06-23-2004, 11:12 PM   #10
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It's IMPREZA, ONE FREAKING "Z"
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Old 06-23-2004, 11:17 PM   #11
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you could also consider an sti motor and tranny swap if youre lucky enough to find one. look in the impreza forums for 1993-2001 and check out some cars there. also you might want to hit up www.rs25.com
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Old 06-23-2004, 11:19 PM   #12
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oh, and hondaslayer, it is in the newbie forum...albeit thats a pretty rough thing to not know the correct spelling...but chill a bit.
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Old 06-23-2004, 11:25 PM   #13
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Its all in jest, so pull your panties out of your ass and calm the **** down.


PS do you realize how annoying it is to read nearly every day, some idiots note regarding their Forrester,Imprezza,Legocy??? Its on the back of your car!!!!!!!!! If you are not sure, just look!
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Old 06-23-2004, 11:27 PM   #14
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Quote:
Originally posted by hondaslayer
Its all in jest, so pull your panties out of your ass and calm the **** down.


PS do you realize how annoying it is to read nearly every day, some idiots note regarding their Forrester,Imprezza,Legocy??? Its on the back of your car!!!!!!!!! If you are not sure, just look!
Good point!

I just hate misspellings and such in general.

<-- Spelling fiend.
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Old 06-24-2004, 06:25 AM   #15
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Quote:
Originally posted by hondaslayer
It's IMPREZA, ONE FREAKING "Z"
Ok........

Anyways, thankyou Nimrod.. i apreciate the help. I'll check out that site and that forum.
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Old 06-24-2004, 09:11 AM   #16
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Quote:
Originally posted by analogvoid
Anyways, thankyou Nimrod.. i apreciate the help. I'll check out that site and that forum.
He said he was joking. No name-calling please.

Subarus are AWD cars built off of FWD chassis... they are not meant to be RWD cars. Sure.. it's easy to weld up the center diff and remove the front axles.. but then you're putting twice as much torque on the rear part of the drivetrain (with a stock motor) and you're putting it to the end of the car with the least amount of traction. It will handle like crap and it will break. The suspension design in the imprezas isn't anything special.. and when it comes to power, a 4 cylinder engine that fills up the engine bay (with the help of an AWD tranny), isn't exactly your best platform to start with.

I've lived in FL, and I feel your pain (especially coming from my home where twisty backroads are a fact of life), but AWD Subarus are about being fun to drive hard through some turns. A 2.5RS would be a fantastic autocross vehicle.. if you want to get into that kind of thing.
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Old 06-24-2004, 11:17 AM   #17
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Quote:
Originally posted by Beaverboy
He said he was joking. No name-calling please.
I think he was talking to NimrodBoz. Anyway, either 2.5 project or MR2 project will make you happy. I have a 2.5 w/ US EJ20/4.44 gears and it scoots. I also have a 93 MR2 turbo which isn't as quick but its stock. The biggest problem is deciding which to drive. Either car can get you in the 13-12 sec. area. One has lots of room, one has none. RWD:AWD. Good luck.
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Old 06-24-2004, 04:51 PM   #18
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Quote:
Originally posted by Beaverboy
He said he was joking. No name-calling please.

Subarus are AWD cars built off of FWD chassis... they are not meant to be RWD cars. Sure.. it's easy to weld up the center diff and remove the front axles.. but then you're putting twice as much torque on the rear part of the drivetrain (with a stock motor) and you're putting it to the end of the car with the least amount of traction. It will handle like crap and it will break. The suspension design in the imprezas isn't anything special.. and when it comes to power, a 4 cylinder engine that fills up the engine bay (with the help of an AWD tranny), isn't exactly your best platform to start with.

I've lived in FL, and I feel your pain (especially coming from my home where twisty backroads are a fact of life), but AWD Subarus are about being fun to drive hard through some turns. A 2.5RS would be a fantastic autocross vehicle.. if you want to get into that kind of thing.
Yah I wasn't calling him a nimrod, i was refereing to another member who's name has "nimrod" in it. I see what you mean about keeping it awd. I was doing some thinking today and if making the rs rwd would sacrifice handling, etc. I think leaving it rwd would be a better idea. We'll see how things go.. thanks to eveyone who has given me advice.

So.. what advantages does awd have over rwd or why would you guys say it's better... i'm open minded.
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Old 06-24-2004, 05:00 PM   #19
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What kind of stuff do you do besides drag racing? That will help you figure out what kind of drivetrain you want..

The MR2's are sweet cars and quite possibly better suited for what you want.

john
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Old 06-24-2004, 05:10 PM   #20
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Well, mostly drag, i would autox, because it's more fun, but it's also mroe expensive. I'm a toyota fan, i also like subaru.. For a daily driver i think the 2.5RS, still awd would be better suited (more room) The MR2 would be a better weekend / track car.
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Old 06-24-2004, 05:22 PM   #21
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Autox is expensive?? SCCA membership $70, events $25 each, all you need are decent tires.

john
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Old 06-24-2004, 05:27 PM   #22
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Don't you go through tires like crazy lol ? That's what i've heard.
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Old 06-24-2004, 05:30 PM   #23
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No, you don't, especially if you're in a street tire class..

Besides, Azenis are cheap!

john
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Old 06-24-2004, 05:31 PM   #24
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I'll look into it.. if i get a new car it will be in 2 years anyways.. so i'm in no rush, i'm just collecting ideas.
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Old 06-24-2004, 09:47 PM   #25
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Quote:
Originally posted by analogvoid
Don't you go through tires like crazy lol ? That's what i've heard.
Just keep an eye on your presures, and have a dedicated wheel/tyre set for auto-x duty, and be sure your alignmnet is not overly extreme, then your golden.
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