Subaru

 

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18

Sneak Peek: Killer B Motorsport’s KILRB1

by Khiem Dinh

Those who race a Subaru know the name Killer B Motorsport. They likely have a number of Killer B parts on their car, such as the engine saving Killer B oil pickup, which replaces the failure prone OEM component. Aside from their oil related products, Killer B is well-known for their unique and highest performing Holy Header too. KILRB1 is the car all those parts were developed on, and it is the highly regarded STi in the Subaru world for its top-notch build quality and innovation. 


 

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25

Daily Driven, HKS Supercharged Scion FR-S Autocross and Track Car

by Frank Ewald

Simon Chan's Scion FR-S attracts attention. Just sitting in a parking lot or driving by on the street, you will take a second look. We certainly did - and then contacted Simon and asked if he was interested in doing an article for MotoIQ. He was and so a meeting was set up at River's Edge Road Course, part of Mission Raceway Park in Mission, B.C. where he would be participating in a track day. A nice balancing point from the Autocross event that first brought this FR-S to our attention. The weather was initially overcast with some light rain on the way to the track, however, by early afternoon the sun was drying off the track and, by mid-afternoon, was out in full force. This was certainly a more balanced day than the early spring autocross event which blew us away with snow in the first few hours before the sun also came out to stay.


 

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23

Japanese Cars That Don't Suck

by Mike Kojima

I pissed a lot of people off with my Japanese Cars Suck article a few weeks ago, where I expressed dismay at the boring state of the Japanese car industry. Japan Inc. seems to be producing either the uninspired transportation device or the trying too hard, over the top stuff that seems like something out of the Fast and the Furious or Transformers franchises.


 

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06

Testing Radium Engineering's Advanced Self-Draining Catch Can!

by Mike Kojima

Having proper crankcase ventilation is critical on a performance engine, especially forced induction ones that have more blowby past the rings by nature. The pressure needs to be relieved. Excessive crankcase pressure can blow seals, cause severe smoking from the turbo and affect piston ring seal causing smoking and losing power. 


 

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03

anti lag rocket beyond the dyno

External Combustion Rocket Anti Lag System + JDM Spec C Impreza STI

By Eric Hsu 

The external combustion anti-lag "rocket" combustor was used on the factory Prodrive built WRC STi Subaru cars to improve the EJ20 engine's inherent mediocre torque and engine response. The rocket is so good that a version of it is still in use today in the 2012 Japanese Super GT GT300 STi BRZ which also uses an EJ20. Last time I wrote a teaser article, but this time we'll take a look at some of the details of the rocket combustor anti-lag system as it applies to my buddy Ben's JDM Impreza STi Spec C street car over in the UK. 


 

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23

The Continual Beginner

by Christy Carlson

Repetition leads to boredom. Boredom leads to unrest. Unrest leads to new beginnings. Well, that, and running out of means will force a person to "reconsider the options available" in a fairly brisk manner. I've been precariously balancing the pocketbook of life for a while, be it health or wealth, youth and unrest, ambition and means. This is my life in motorsports, starting at 25.


 

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29

Building the FR-S FA20 engine with Stay Crushing, Assembling the Engine!

by Mike Kojima

In our previous installments of the Stay Crushing FR-S engine build, we have been accumulating the parts to build the supercharged FA20 engine. Now we have everything, and it's time to put it all together!


 

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02

Building the FR-S FA20 engine with Stay Crushing, Prepping the Cylinder Heads With Portflow Design 

by Mike Kojima

In the last installment of our FA20 engine build, we covered the parts that we were going to use for the insides of the "Stay Crushing" FR-S. With the components covered it was time to start on the engine build in earnest. We decided to begin with the cylinder head and enlisted the help of Tom Fujita at Portflow design to perform the core work on our head.


 

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09

Ghostwalk the Whip: Fixing Subaru Bump Steer with Whiteline Bushings

by Daniel O'Donnell (With language assistance for Subaru owners in bold)

There aren’t many more usable vehicles than a Subaru Outback (Scooby Vapewagon). Mild off-roading to your next rock climbing trip? Easy-peasy. Need to take your Australian Cattle Dogs to the vegan dog park? Donezo. Hauling your butch friend Karen and all her camping gear to Beaver Island for a weekend under the stars? Legally, only Subarus are allowed to perform that task. Yet with all these wonderful positives, there’s one annoying issue that nearly makes all these points moot, over time Outbacks can develop terrible rear bump steer (totes gnar dorifto).


 

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25

Steve’s STi: Doing It Right!

by Frank Ewald

When talking with Steve about his car you can sense the passion he has for his STi but also for amateur motorsport. Our discussions went on and on as we chatted about the car, friends we have met at the track, the challenges of building a car that performs how you want it to, and the joy of volunteering and seeing newcomers get inspired by track events. The heart of this story, however, is this 2004 STi which, when you get right down to it, has had almost every component and body panel modified in the pursuit of performance. And boy has it worked!


 

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04

Building the Subaru VA WRX clutch and Flywheel with ACT!

by Mike Kojima

All wheel drive cars are traditionally hard on clutches. With tons of traction, launches involve a lot of clutch slippage. Fast shifting and even downshifting are all harder on the clutch due to the increased traction of 4 wheels.  With this in mind building a daily driver heavy duty clutch for a street car is always a challenge. 

It just so happened that our friends at ACT were wrapping up development of a clutch and flywheel combination for the late model VA WRX when we were at their office and we thought it might be a good opportunity to show what is deep inside ACT's WRX clutch which shares many design features with all ACT clutches. 


 

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05

Project VA WRX: Enhancing Grip with ARK Design R5 Wheels and Nitto NT05 Tires

by Mike Kojima

Our VA WRX is becoming quite impressive thanks to the gains we have made in its performance.  We are beginning to think that it will soon be knocking at and even exceeding the performance envelope of the much more expensive STI.

Since we have been working on the brakes and suspension of our STI killer VA WRX, it was time to take advantage of those parts with some bigger, grippier tires and wheels to accommodate them. We got the right hardware for the job with some wider wheels from ARK Design and bigger tires from Nitto Tire.


 

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20

Project VA WRX: Improving the Suspension With Tein Flex-Z Coilovers

by Mike Kojima

Many of our MotoIQ Project Cars feature top of the line or even exotic suspension parts, exactly the kind of stuff you want to use in cars that see mixed track/street use with a heavy track bias. However, not all of our cars are set up like this, some of our cars are more street oriented and set up towards hassle free daily use. 


 

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06

Project GD STI: Getting More Power with Precision Turbo and Cobb Tuning! Part - 1

by Mike Kojima

Our STI has been driving around as a daily for two years now with all of the typical bolt ons.  It has been reliable at 318 whp with good driveability and fuel economy on regular pump gas, in other words a hassle free car that is very easy to live with.  Of course if good was enough, more is better and we could not leave good enough alone.


 

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27

Project VA WRX: Upgrading the Brakes with Stoptech Part 2 - Getting it Done!

by Mike Kojima

In our last edition of Project VA WRX we showcased some of the preliminary testing involved for the design validation of our new big brake kit by Stoptech.  A baseline for the stock brake system was established using Stoptech's test protocols. The brake testing establishes the brake balance, stopping distances and fade characteristics of the stock brakes so improvements can be measured and there is a record of the validation testing.


 

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02

HKS Introduces New V3 Supercharger Kit for FR-S and BRZ

Industry Press Release

HKS, the iconic Japanese performance parts manufacturer, is announcing the introduction of its new V3 Supercharger Kit for the Scion FR-S and Subaru BRZ.

The V3 Supercharger kit includes some significant changes over previous versions. The inlet pipe has been redesigned to have a larger inside diameter, allowing for more airflow. The restrictor plate has also been removed.


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31

Project VA WRX: Upgrading the Brakes with Stoptech Part 1 - Getting a Baseline

by Mike Kojima

Our Project VA WRX does not have the trick Brembo brakes that come standard on its big brother the STI.  It does however have brakes that would have been considered to be great just a few short years ago. Although the front and rear calipers appear to be pedestrian sliding calipers with two pistons on the front and a single piston for the rear brakes, the rotors are big. The front rotors measure in at 316mm in diameter and 28mm thick while the rear rotors are 288mm in diameter and 8.5mm thick. The pads are also large for OEM type calipers.


 

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16

Project Autocross BRZ: Dodging Cones With GT Radial

by Bart Hockerman

“Who is GT Radial?”

That was the 1st words out of everyone's mouth when reading the SCCA Solo Contingency Program page. 

What seemed to be a more known name on the West Coast was virtually unknown throughout the rest of the country. The next big question is “What tire do they have that we will want to use?”


 

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08

Project Autocross BRZ: Swapping The Feal 441's to KW V3's

by Bart Hockerman

Since the first installment some time ago things have changed with the BRZ. KW has graciously supplied us with KW V3’s for use on this Project BRZ. With that in mind the 2014 SCCA Spring Nationals was the last event for us on the Feal 441’s. So we went out and gave them the last “Hoorah”. We brought home a solid 2nd and 4th place finish at the ProSolo and another solid 2nd place finish for the National Tour.


 

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01

Project Autocross BRZ: Keeping Her STX Legal With Nameless Performance And Whiteline 

by Bart Hockerman

With the arrival of the BRZ/FR-S platforms here in the Autocross world they have taken hold as cars to have and enjoy. Everyone saw that the twins with very minimal preparation could do the job as good as or better than many cars that have had years of time money and tuning to the rules of the STX class.


 

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