Turbocharged Scion FR-S build thread

[SubyPAL]

Hello everyone,

Thank you for checking out this thread. I've been blessed with the opportunity to build and tune the new Scion FR-S as soon as it hits the showroom floor. The vehicle will be built for power, agility, and curb appeal. I wanted to keep a log of this build from start to finish, and I thought this would be a great place to do just that. Just to let you know, I'll be posting pics, videos, and more along the way. If I see free mods along the way that can improve performance, I'll be sure to note them. We plan to have everything custom built - including a custom turbo built specifically for the FR-S powerband. This will be a build you will not want to miss.

Let's start off with a question for the forum. If you could do anything you wanted to the new FR-S and budget was not an issue, what would it be? (not related to this build..ehrm ) Get creative and let's have some fun! Performance, appearance, handling, etc - whatever you want to change or improve lets hear it. Thanks for you input!

[import_nation]

Wow first thanks for joining this forum. I think tons of guys would be really excited to see your build.

Can I ask a few questions?

What are your power goals?
Any idea how you are going to achieve it?
How are you going to work around reinforcing the motor to handle boost?
Do you work for a race team or organization?

Let us know of any updates you get on getting your FR-S as well. You could give us a stock FR-S overview and opinion. Take it to the track and let us know what you think compared to other cars you've driven.

Personally if money was no object I'd go the easy way out and go for a built cosworth motor swap. Thicker sway bars, coilovers - stiffer rates and dampening - (rebound adjustment , high and low speed bump adjustment, compression adjustment, external oil reservoir), all spherical bushings, stiffened rubber bushings for non spherical movement bushings, 1.5 way lsd, r comp tires. I want this thing to handle just as much as I want it to go fast.

[modelo420]

Strut bars(Front/Mid/Rear)
Underbody 4 point brace
Shorter antenna
Brushed alluminum fuel cap
Brushed alluminum interior parts
Short shifter
A back seat replacement kit (For people who remove their backseat and would like to cover up the bare metal and wires that might show. I.E. - a prefitted, carpeted insert that goes from the back of the trunk to almost the front seats. Would have to be light weight material.)
Diamond plated floor mats
Underdrive pulley
Acceleration pulley
Bigger throttlebody
Angel eye kit
Motor mounts
Big brake kit

Engine Torque Damper Kit

Frame for inside the car to secure a racing harness
Turbo
SC
3" catback
headers
CAI
coilovers
Hood with a functional flush "hood scoop" (Nothing like what you see on big American race cars...just an indent in the hood and have an opening)

iF YOU NEED PICTURES FOR SOME OF THE THINGS i MENTIONED...TO GET A BETTER IDEA OF WHAT i'M TALKIGN ABOUT...i CAN DO THAT

[SubyPAL]

Thank you for the warm welcoming and the great modification suggestions! Please keep the ideas coming. I hope to bring a lot of good information here as well as some fun videos of us actually using the vehicle for what it is meant for

To answer the above questions -> First, we are going to dyno the vehicle stock and see what it does then build from there. A quick road test will allow me to focus on what suspension and chassis changes need to be done. Most likely, weight reduction and lowering of COG is always a win-win. That high compression ratio of the na boxer motor has got to go so we will for sure be swapping pistons, rings, rods, and maybe main bearings. Additionally, we will reduce the weight of the rotating components of the drivetrain to reduce stress and improve performance. I look for anywhere from 350-500 at the wheel with this vehicle at full boost by 3500 RPM - we may or may not use alcohol or methanol injection. We won't know until we see how this engine reacts with pump gas.

My personal experience is that of Subaru engines with vast amounts of networking within the Subaru community from street racing all the way up to the WRC and Formula D drift circuits. I spent two years building my own homebrew rally car as well. I'm going to apply a blend of that knowledge to this build and see what we come up with. That's me - I'm not the only one working on this. Pete Stop Motor Company will also be involved, which they have quite a reputation for turbocharged vehicles such as the new Camaro, Subarus, and more. The last car to hit their dyno was a Rolex 24 hour GP car lol. The turbocharger company, TurboBay Performance comes from the SRT-4 and DSM world and has been creating turbos for a very long time in the Tampa area. They have a great reputation for big CFM and fast spool. Everyone will have their input on this vehicle including you guys - so to sum it up; this should be interesting

[import_nation]

Thanks for joining this forum. Really looking forward to how you are going to achieve your goals.

Got a name SubyPAL?


Brian

[FR_S_Fan]

Strut bars(Front/Mid/Rear)
Underbody 4 point brace
Shorter antenna
Brushed alluminum fuel cap
Brushed alluminum interior parts
Short shifter
A back seat replacement kit (For people who remove their backseat and would like to cover up the bare metal and wires that might show. I.E. - a prefitted, carpeted insert that goes from the back of the trunk to almost the front seats. Would have to be light weight material.)
Diamond plated floor mats
Underdrive pulley
Acceleration pulley
Bigger throttlebody
Angel eye kit
Motor mounts
Big brake kit

Engine Torque Damper Kit

Frame for inside the car to secure a racing harness
Turbo
SC
3" catback
headers
CAI
coilovers
Hood with a functional flush "hood scoop" (Nothing like what you see on big American race cars...just an indent in the hood and have an opening)

iF YOU NEED PICTURES FOR SOME OF THE THINGS i MENTIONED...TO GET A BETTER IDEA OF WHAT i'M TALKIGN ABOUT...i CAN DO THAT

welcome to the forum. after checking out your parts list im really interested in seeing your build. fill us in on it and if you can be as detailed as possible, it will be really helpful to the rest of the community here!

[rwdftw]

Welcome to the Forum.

We do expect all that, But Most of that stuff is generic parts, Something like a Mandrel bent, With Quality welds manifold on par with Desendant and Full Race Turbo kits as well, Also Possible a lower loping cams to decrease compression in the head as the 12:5:1 compression is terrible.

As far a coil overs regular UEL or El header will mostly likeley be made in a heart beat.

Far as im concertened Downpipes, FMIC or a Top Mount, Possible a side cutout exhaust, Springs Valves retainers, Pistons Rings, Rods. everything we need to lower the compression and make a 400-500whp monster ALSO what would help a lot is a 1.5 way LSD there is a ton of parts i would love to see for this car to get devloped.

[import_nation]

You mean lower compression pistons. Not cams. There are 2 obvious issues with the FR-S motor. 1. High Compression 2. Open Deck Block Resolution? 1. Lower Compression Forged Piston Design 2. Block Guard or Sleeve I went on some Subaru forums and found that those open deck 2.0 liter decks aren't as weak as everyone might think. Some guys are running boost just fine on them. But if it was me I'd personally add a guard.

[dboz]

SUB'd for this build! I would like to see the limits in stock config pushed first so we know what this car has to offer for a build. See what the clutch and stock block can take, also the transmission.

[import_nation]

SUB'd for this build! I would like to see the limits in stock config pushed first so we know what this car has to offer for a build. See what the clutch and stock block can take, also the transmission.

The problem with testing how much the stuck engine and drivetrain can handle is that when you figure out, you need a new motor and transmission/diff&axels.

[modelo420]

welcome to the forum. after checking out your parts list im really interested in seeing your build. fill us in on it and if you can be as detailed as possible, it will be really helpful to the rest of the community here!

Uhhhh...I'm not the OP...That was a list for him of things I would do to the car...or atleast like to see on the FR-S. lolol...just...fyi

[import_nation]

The transmission is basically an S2000 transmission. The transmission should be able to hold the power. Not sure about the axels rating or diff rating. Usually stock LSDs are only good for up to 300whp.

[dboz]

The problem with testing how much the stuck engine and drivetrain can handle is that when you figure out, you need a new motor and transmission/diff&axels.

Correct. That is why instead of doing a monster build out the box like you proposed (full built Cosworth), I would go in steps and see when it fails and where the weak points are. That way, we can decide to what level we want/need to take this car as far as a budget is concerned. I personally do not want to buy a brand new car, rip is to pieces, add a new built engine, and go from there. If I am going to all that cost, I just would buy a better car to begin with. Corvette Z06 comes to mind quickly. Full engine build with turbo has to run close to 10 grand, plus a new clutch is another 1-2, plus transmission upgrades if needed. Your 27k car is now at least pushing 40k with potential drivability issues since it is modded to the max, vs. being engineered for a certain level with thousands of hours of testing.

[import_nation]

Depends who is the driver of course. If everyone thought like you there would be no such thing as performance parts for cars. Everyone would own Zonda Rs

Taking cars that aren't fast and making them go fast is what fuels the aftermarket industry.

You could spend 30K on a car or buy a 30K car. It all comes down to what type of guy you are. Personally I like having a car that I can be proud of having worked on. I've wanted the new E92s for a long time now. But I don't have one because it's too expensive and TBH I don't like the image that follows M3s. Guys who own M3s have no idea how a car works.

I'd rather own a classic challenger over the new SRT-8 Challenger.

NO doubt the new Corvette is a beast. I just wouldn't want to own one. Its a great car for drag or track. But I think for me, the FR-S community is going to be much more interesting then the Z06 community.

EDIT: As for the capabilities of the car. Don't worry tons of idiots will find out for us how much power the stock drivetrain can handle. I don't think someone who has plans and a brain would destroy a brand new FR-S just to test it out.

[Flat-box]

enough people will put too much power down and rip apart their stock motors internals tranmssion and dystory their syncros/gears! ad axel rating as well people will break them and we will know about them