96scoob

Well i have a 1980 i dont know what model and would like to build the car to becomprable to a Stage 2 STI at the strip or on the track. So i guess what would it take to complete a car to do this? All the way from suspension, brakes, steering and the engine(build or swap). I would prefer to swap out for a 13bt motor as i dont like carburation. What kinda hp numbers am i looking at achieiving? I still have alot to learn as to how these engines are built and moddifying them. Any tips or key words for the search would be great.

Crit

iTrader: (6)

Firstly, what's a Stage II STI? You start with a Subie WRX and do what?

trochoid

iTrader: (6)

Read everything you can in the 2nd gen section on modding and building TII engines. Read everything you can find here on installing it and modifying the suspension/drivetrain. Oh and save up 7-10k to afford it.

Have fun with the Darkside.
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Siraniko

iTrader: (13)

You just cant compare apples and bananas.

85 FB

How about comparing apples to oranges?

gsl-se addict

iTrader: (3)

I'd be interested in why. It sounds like he has a buddy with an STI that he wants to beat. Don't do things just to impress people. It is not worth it. Do what you want to do with the car. Who cares if the STI could take you or not? If you do want to stomp him, and about anythingthing else too, two words: "turbo 20B". Cost some bucks to do it, though.

Why don't you guys get together and compare your "fruit" in private? Almost there, wacky.. Just 5 more posts. People didn't think it could be done. They underestimated wacky's ability to post-*****.

Siraniko

iTrader: (13)

shiet

85 FB

I wouldn't know about the post part...but the ***** part....


So, when wacky does clear 10K posts, I wonder if he's going to make some stupid pointless thread that he did it.

dbragg

iTrader: (7)

+1


you want to beat a "stage II" STI, get a "stage III" STI

FBsliderseven

iTrader: (2)

LOL!

96scoob

Well ive been a long time subaru fantaic (look at my sn) and honestly the stage2 STI is almost a perfect car in my eyes. Enough power to pretty much kill anything on the track (nicely tuned evo's would be the exception) and can be a dd but i have come to love my SA and do not want get rid of it, but i want to be able to keep up with the subarus for a personal pleasure not trying to impress some one. im relativley new to the RX7 i understand rotarys decently but i need to be schooled. Ive been doing some reading on S4 S5/irons/ and the rest of motor building and man i need to learn so thts why im here. Like ive said search tips or anything would be great.

Skidtron

iTrader: (1)

Dammit I was going to say that^

**** now I have to come up with something to make my post worth while....hmmmm......Well judging by a friend of mines 06 STi he says the FB with minimal suspension mods can beat a stock STi in the corners on tarmac that is. He's had two FB and two or three FCs and a very long list of other cars. I actually called him on the phone to ask him since I was going to say what this guy said originally. I know for a fact you can murder a STi in a straight line with a slightly modded TII swap and some good rear tires. Saw a guy do it about two months ago in person. I do not know about the driving skill of the STi owner though. The FB driver is a good driver. If you make 250 or so hp you should beat a STi no problem. That is depending on the turbo size for whatever a stage 2 Sti is. The stock turbo on those is a cute little turd so if it still has the stock turbo it better be on methonal and 91 octane or it doesn't make power worth talking about.

96scoob

Well theres a difference between the wrx and wrx STI

WRX: 02-05 2.0 ltr DOHC Turbochaged H4 (ej20)
Came stock with a 5spd and a TD04 turbo basicly
06-07 the motor displacement was incresed toa 2.5 ltr but same turbo and transmission. 235 Hp

WRX STI: 04-07
2.5 ltr Dohc Turbocharged H4 (ej25)
Comes stock with beefier but heaveir 6spd transmission which has been known to hold some high hp numbers. The suspenion has been improved from truts/springs, to sway bars and tie rods. The Steering rack has a better ratio.
And the turbo size has been incressed to an IHI VF39.

StageII STI Is basically the same except a cobb access port which remaps the ecu, downpipe and and tbe. Bring the car to some nice numbers but not extreme from there you can go to an 18g or 20g with bigger injectors, pump and fmic. Its basically the stepping stone two produce high hp numbers in the 400 range.

Skidtron

iTrader: (1)

Do the suspension and brakes first as the FB is much much lighter and will easily out perform the Sti in corners and under braking. That's the easy stuff and then tackle the power once you have a solid base to work from. There's is no reason not to want to show how much better an RX-7 is that another car. or whatever that guy said. I'm sure there's a few hundred members cars on here that would eat and Sti for breakfast in any contest. No car is so good that some other car can't be modified to be better than. I personally love the Subaru's but a lot of those guys have really big heads about their cars. I proved some of them wrong at an autocross once when my car was stock and broken I might add I beat their times only one was an Sti the rest were regular. But I beat all of them. I beat every Honda, and almost every Porsche except the GT3 of course. Oh! also all the "Silvias" If you will. I drive hard though and some people would not be willing to run any car that hard so that maybe my secret weapon. Plus a 12A has no rev limiter but I swear the buzzer gets louder the longer the needle remains north of the 7000 rpm mark. LOL!

Can't imagine why my old *** 12A broke.................hmmmmmm

Skidtron

iTrader: (1)

So just the stock turbo still. LOL! that's easy to beat. Keep in mind I beat a regular WRX with my 100hp 12A in a drag race. it might not have even had 100hp though that's the stock flywheel number. The regular WRX has 217 or 227. I was more surprised than he. I would say a stock TII swap would beat an STi then. Maybe boost it up a bit to 15-16 psi or so and no problem.

96scoob

Well ive did alittle reasearch for a teh TII, looks liet i can make the 250 mark on a stock turbo with a new ecu and tune(still need to look into tht), fmic, full tbe, injectors and pumps. And some extra porting and polishing. Now whats the difference between the S4/S5 i know noob question. And also the irons? Can some one elaborate please.

96scoob

Yah i dont want to be the idiot thats says i want 400hp as thats way to much for a car tht size. I just want to be extremely competitive on the track and do only enough required to do so. People dont understand driving a car with high hp numbers and what it takes to do it. Also which model has the wheel patter of 4x114.5 is it? Also is tht rear disc as i believe my car has rear drums. Need to get rid of tht asap.

arghx

iTrader: (3)

you're in serious fanboy/dreamer territory here man... come back to reality.

your best bet is to either swap a 2nd gen turbo engine in or buy a 2nd gen Turbo II, then put in intake, exhaust, boost controller, front mount intercooler, secondary injectors, Rtek chip, and a ported wastegate. You will do 220-250 and be able to pull a near stock STi. I pulled an STi with 250rwhp when I was on stock turbo in my T2.

gsl-se addict

iTrader: (3)

84-85 GSL-SE has the bolt pattern you want. Also has LSD and vented discs on all 4 wheels. Swap the whole rear end and the front suspension over. There are several threads that cover this upgrade.

96scoob

^^^^ thanks thts the kinda info i was looking for! Well how exactly does one get a front mount on an SA. By looking at the car there isnt much of passage for air inthe front. Also i know it can be down but ive always ben a fan of tmic and possibley pull one from an STI as im sure they can handle it. Less piping but the scoop could be a problem.

96scoob

Does the SA come with an lsd stock? Because from of my little ventures of playing around and some drifting i found the car def has an lsd.

85 FB

Check out the FAQs on the main page. It'll help you with the LSD questions along with a few others, IIRC.

trochoid

iTrader: (6)

To get some reality here for comparing apple to oranges to phallic bananas, lets start with some basics. The SA will weigh in around 2350 lbs. and pull a skid pad of around 0.79-0.84, iirc. Can't seem to find the specs to comfirm the skid pad. With suspension mods and wider wheels, better tires, hitting over 1g on the skid pad is fairly easy, but can run around 2k to do the full upgrade.

Next thing to compare is hp/weight ratios. What does the Scoob weigh in at and what's the hp of the Stage II? Lastly what's it's 1/4 mile ETs.

Comparing hard numbers will give you an idea of how big/extreme you'll need to go. The RX7 was built for handling, not the drag strip. With the right mods, it can me built to handle both reasonably well as a package, but trying to build it for dual purposes tends to be a compromise between the two.

dck47

You want to compare STI's to SA/FB's? Here's a way to beat'em: price out a driveline fluid swap. Price out a clutch swap. The best? Price out a valvetrain adjustment

Jeezus

iTrader: (4)

S4 TII
Intercooler and piping
GSL-SE Front Cover and Oil Pan
Premix
Port the wastegate
boost up to 12lbs
RB top manifold
45DCOE Carb Boost Prepped
Carb Hat
FMIC, Slanted (you wanted to know how to mount one, not up and down)
TII transmission
Driveshaft
84/85 GSL Rear end (Disc brakes, LSD, Big axles)
Grippy tires
Aftermarket shocks/springs (Tokico, Ebach, ST, Racingbeat, etc)

Don't expect to dump the clutch much and keep your rear end. This is the cheapo way to do it. Sure, you can get more if you go 48 or 51 IDA, keep FI and run bigger injectors.