Latest Articles

Product Development Testing with KW Suspension

by Mike Kojima

If you are interested in the way a suspension company does R&D, take a look at how a typical test session for KW Suspension goes.  We tagged along on the final calibration confirmation of KW's latest 3-Way adjustable Club Sport suspension for the BMW M2.


 

Modeling Braking: Braking Harder Means Less Brake Fade

by Khiem Dinh

Almost every novice to track day driving exhibits the same fault; they do not brake hard enough.  I was guilty of this myself and I remember vividly plowing through many corners at my first auto-x killing a few cones along the way.  Whenever I do driving instruction, I almost always have to tell the student to brake later and harder.  It should be obvious that braking harder and later improves lap times.  However, braking harder versus braking lightly and longer can also reduce heat buildup in the brake system reducing fade.  To prove this theory, I made a little mathematical model.


 

Lessons in Turbo Technology with Garrett!  Lesson 1 - The Compressor Wheel

by Mike Kojima

Recently we were privileged to be able to take a look behind the walls of Garrett Turbochargers' research and development facilities.  We were able to get an insider view of the intensive engineering inside a Garrett Turbo and viewed first hand what differentiates it from your typical aftermarket fare.  We were very impressed by what we saw and we would like to share it with you by breaking some of what a World Class OEM supplier puts into the performance turbos any consumer can buy into easily digestible lessons that we will be presenting to you periodically. Perhaps the key part of any turbo is the compressor wheel.  Let's look at what Garrett does to bring you one of the best compressor wheels on the market. 


 

Project S550 - 2015 Mustang GT Introduction

by Nathan Brummer

Ford followed up their hugely successful S197 Mustang with a completely redesigned platform. The 2015 model year known to Mustang enthusiasts by its chassis designation S550 is now coveted around the world (even outselling the Porsche 911 in Germany this past March) and boasts two major differences from its predecessor, the S197. While aesthetics are subjective – and always hotly debated - the first, and most obvious, difference is how much sleeker this new model looks. Secondly, it now sports an independent rear suspension, meaning the new Mustang no longer suffers from the live rear axle, which has been widely panned as a critical shortcoming for many years. While always a formidable straight-line drag racer, it has never been considered a great handling car. Those days are now long gone, making the S550 a perfect candidate for a performance-oriented daily driver project.


 

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. 


 

Nerd's Eye View: The Dyson Mazda ALMS P1 Prototype

By Mike Kojima

I am old enough to have been around during what I consider to be the golden era of American road racing in the 80's.  In this time we saw the rise of IMSA with the outrageous GTP prototypes and the exotic sort of production based GTO and GTU cars.  SCCA had Trans Am and even CART Open wheelers were sporting awesome technology rivaling Formula One but with closer more exciting racing.  I was lucky enough to have been a fan during this time and later on in the decade a participant.


 

Formula Drift Wall Speedway

Event Coverage: Formula Drift - Round 4

by Sarah Forst

Formula Drift returned to Wall Speedway for Round 4 and gives new meaning to smoking (in) a bowl. The 33 degree bank has a gravitational force that can pull a car onto its can opener guardrail and "speedbumps" in the infield crossover that toss a car so haphazardly it can cause the driver to over-rotate or lose drift. If timed perfectly, it can also launch a car into a wicked flawless angle around the final sweeper for a win. Who is going to take this battle?


 

Industry Insider: Pro Line Racing

by Erik Jacobs

The Atlanta metro area is quite a big place. But, despite its size, most residents wouldn't know where Ball Ground, Georgia is. To anyone wanting to get down the drag strip with 4,000+ horsepower, however, this exurb 50 miles outside of the city is special, because that is where Pro Line Racing calls home.


 

E46 BMW M3 Turbo: Part 3 – Clutch Masters twin-disc clutch, and more MKC cars!

by Pablo Mazlumian

Not only do we install a much needed twin disc clutch from Clutch Masters in this 700 WHP beast, but we feaure several more heavily boosted cars at Modified by KC that were in for some tuning. If you like boost, read on...


 

Champion ATM Nissan 240SX at the Texas Mile

by Erik Jacobs

When Joshua was 12 years old he won his first karting championship. The “Champion” moniker stuck. Every venture since has had it in the name. Father (Randy Hora) and son (Joshua Hora) have done lots of things together, and a trip to Bonneville gave them the crazy idea to go land speed racing. The Champion ATM 240SX is the result of that teamwork.


 

Wrench Tip: How to Fix a Bumper Cover

by David Zipf

Fender benders suck.  Even a light knock can craze paint, crack light lenses, and put holes in bumpers.  While the damage usually isn’t structural, replacing all those plastic bits can be a real hassle and it gets expensive fast.  And then there’s paint: not only do you lose your car, but a respray is never quite as good as the factory paint.  Surely, if you have been in a minor parking lot scuffle, there’s a better way of dealing with plastic damage than to chuck the bumper and start from scratch?  Luckily enough, there is.


 

Building a NASA NP01 Prototype the Right Way with StopTech!  Part 1

by Mike Kojima

Last November we had the chance to drive and evaluate NASA's NP01 Prototype built by Elan. We loved the car and eagerly awaited its availability. Fast forward a few months and our friends at StopTech were able to get one of the first NP01 kits.  Since StopTech's facility was undergoing expansion it was agreed that the car would get built at the palatial MotoIQ mega shop and that we could do a series of articles on what it takes to build a winning NP01.


JMS Racing Subaru WRX STi at the Texas Mile

by Erik Jacobs

JMS Racing is no stranger to AWD performance, having been in the Mitsubishi Evo game for some time. They also have been around the block when it comes to drag and other straight-line racing, having built the first 9-second Evo in Texas. At a customer's request they turned their attention to Subaru mile performance racing and built this 200+ MPH capable beast.


 

Wrench Tips #31: Cardboard Aided Design

C.A.D. - Cardboard Aided Design

by Dan Barnes

It was an epiphany when I walked into a race shop and saw the interior tin work of an under-construction Rolex GT car mocked up entirely in white illustration board, clecos and blue tape. I made a mental note: I can do that! I can even afford that! Now my projects turn out better with the use of old cereal boxes, scissors and tape.


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