Tech

 

19

The Life of Opy: Part 1 - Introduction

by Khiem Dinh

Joining the 2011 model year lineup from Nissan was this funky little subcompact crossover SUV. It had polarizing looks, but a spunky and fun personality universally liked. Underneath the quirky exterior laid a real performance foundation starting with a turbocharged 1.6L gasoline direct injection engine and handling more befitting of a sport compact. Throw in optional AWD and the Juke presented an interesting performance package.


 

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17

Evaluating HKS Hipermax SP coilovers on the Mazda ND MX-5

by Mike Kojima

The Mazda ND MX-5 is the latest evolution of the Miata chassis.  We have found it to be an excellent handling car, one of the best and most well balanced cars we have driven.  We have, however, found the car to be too soft in completely stock form to really be fun.


 

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14

Wrench Tip: How To Fix a Faulty Key Fob

by David Zipf

If you drive an older car with keyless entry, you will notice over time that the buttons stop working.  The general solution is to simply replace the battery.  But sometimes that doesn’t actually fix anything.  Other times only one button isn't working while the rest are.  If this is the case, the real problem lies deeper and fortunately, it’s an easy fix with some simple tools and about 5 minutes of time.


 

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11

Squirrel Power: Making our Suzuki FA50 Road Worthy

by David Zipf

When we picked up our 1982 Suzuki FA50 last winter, we spent all our time and effort making the old bird run.  And we succeeded!  But before we put some real miles under this old beast, we need to make it safer.  There are no mirrors and seeing as we will be slower than just about everything other than James May in an electric wheelchair, we really need to see what’s behind us when we stop or turn.  The front brakes are worn out, so we only have rear brakes to slow us down (and they are only slightly better).  The tires are rotten.  And we have no exhaust, so this thing is unbearably LOUD!!!  So let’s make our little bike safer, more reliable, and ready for emergency parts running.


 

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10

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.


 

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07

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.


 

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Posted in: Magazine, Tech
06

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. 


 

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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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29

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.


 

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28

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?


 

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26

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...


 

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21

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.


 

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20

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.


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15
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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13

Project [Rotary] FD RX-7: Part 6 - V-Mount Cooling System (Overview and Intercooler)

by M-P Spierer

The cooling system in the FD RX-7 is widely regarded as its most glaring weakness. Many of the engine's cooling components are constructed out of plastic, the intercooler is wildly undersized, and the orientation of the radiator does not allow for proper airflow to the intercoolerIn the next two installments of Project [Rotary] FD RX-7 we tackle these issues by implementing a 100% custom V-mount cooling solution. 


 

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12

Improving Towing Capability with Hellwig and Bilstein Part Two

by Mike Kojima

In part one, we had installed Hellwig air springs, rear anti sway bar and Bilstein 5100 series shocks on our workhorse 2014 Chevy Silverado truck.  We were super impressed with what the rear suspension did to make our towing experience more pleasant and much safer. However, due to time constraints we did not have time to do the front suspension.


 

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09

Mucking Off with Muck Daddy, Green Style

by Mike Kojima

There is always plenty going on at the palatial MotoIQ HQ.  A lot of that involves race cars and high mileage street cars.  This means that we're constantly dealing with dirty and grimy hands of the worst order.


 

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07

Inside the Rahal Letterman Lanigan RLL BMW M6 GTLM

by Mike Kojima

One of our traditions while at the Long Beach Grand Prix, is to get a close look at the latest factory BWM racers with the Rahal Letterman Lanigan team.  The latest car that BMW is campaigning is an M6 in IMSA's GTLM class.


 

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06

An Inside Look at mountune's GRC Ford Duratec Engine!

by Mike Kojima

The current engines used in today's GRC Rallycross racers are some of the highest stressed production based engines in all of Motorsports.  Only Import Drag Racing engines see more stress and perhaps no production based race engines not even Time Attack engines are stressed for as long a period of time as Rallycross powerplants.

Breathing through a 45mm restrictor that limits power to "around" 550 hp, the mountune Ford Duratec puts out 625 lb/ft of torque.  Because of the restrictor, the Garrett Turbo pumps in 45 plus psi absolute of boost to make that power, generating an amazing 3200 psi of cylinder pressure.  To put this in perspective, this is more cylinder pressure than the Audi LMP1 Diesel!


 

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31

"My Girlfriend's" Miata: Part 5 - Keeping Cool with Koyorad

by Daniel O'Donnell

I had a dream. In this dream a man would drive a car on the track. He wouldn’t own this car, yet he would have all the joy and happiness as if he actually owned it. His expenses would be low and his debt modest due to his loving girlfriend’s trust and/or gullibility. This was a beautiful dream that would leave me slightly sad when I awoke. Surely I couldn’t become this man. With my awkward personality and face only a mother could love, no girl would date me, let alone be foolish enough to let me drive her car at speed. But this my friends, is America. Dreams still come true and slowly, the dream has started becoming a reality. First the girlfriend, then the Miata, then the rollbar, seats and brakes to get it track ready. The last piece of the puzzle was improving the dumpster fire Mazda calls a cooling system in NA Miatas. With the help of Koyorad, my vision, foretold many years ago, is ready to be fulfilled.


 

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