Entries for 'Mike Kojima'

14

Project Porsche 991 GT3 RS- Improving the Aero with a 911R Rear Diffuser

by Mike Kojima

How do you improve a supercar? It is not easy, but leave it to us to give it a try. We recently got to add a Porsche GT3 RS to our project car fleet. If you don't know much about Porsches, a GT3 RS is a limited production model, part of the current 991 platform family and the last of the great naturally aspirated 911's. 


 

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12

Project DC2 Integra- Getting More Grip With OS Giken and Better Response With Centerforce

by Mike Kojima

With our DC2 Integra rocking a state of the art suspension, it was time to get our drivetrain in order for our anticipated track use and increased power. To get the power to the ground, we needed a limited slip differential, and we selected what we feel is the best FWD limited slip on the market- the OS Giken 1 way differential.


 

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07

Dai Yoshihara's 2018 Formula Drift Rebuild

by Mike Kojima

After 3 years of Formula Drift competition, our team had pretty much developed the BRZ chassis to where we were satisfied with its performance. After some post-season testing to try out a few new ideas we decided that with the development stable, it was time to completely go through the car, repair some minor damage incurred during three seasons of hard use and to rethink the car's layout.


 

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04

Project DBA R35 GT-R: Putting the Suspension All Together With SPL Parts and Whiteline 

by Mike Kojima

Now we are in the home stretch for upgrading our GT-R's underpinnings with our quest to improve its on-track staying power and to reduce its propensity to understeer. In previous editions, we did the suspension basics and upgraded the brakes on the car. Now it was time to finish this part of our project off.


 

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28

Building an FA20 Race Engine for Michele Abbate: Part 2

by Mike Kojima

So when we last left off, we were putting together some awesome parts for Michele's engine and were about to embark on assembling it. In the interest of long-term durability, we added a few tricks to our build over the last one we did for the Stay Crushing car.


 

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14

Project DBA R35 GT-R: Upping Stopping Power with Brembo and Race Technologies

by Mike Kojima

As you can see so far in this series, we are doing a lot of things to fight the weight of the GT-R.  At 3800 pounds, the GT-R wheels throw around a lot of mass with a great deal of speed and grace, but it can only do it for short periods of time before the weight takes its toll, mostly on the brakes and tires.


 

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09

Project DBA R35 GT-R: Getting More Grip with Advan and Toyo!

by Mike Kojima

One of the issues with the R35 GT-R is that it is a big heavy car that gets an amazing amount of performance out of its tires.  The stock tires are a 285/35-20 in the rear and a 255/40-20 in the front. For most cars, this is an impressive amount of rubber but for the 3850 lb GT-R, the car works exceedingly well at first, but the tires quickly fade away.  With some ham-fisted driving, the fading away happens pretty fast.


 

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07

Project Corvette Stingray C7 Z51: Keepin' it Cool(er)

by Mike Kojima

Corvettes have always been notorious for overheating on the track. The Z51 shod from the factory with additional cooling capacity is much better in this respect, but it can still run hot under the worst conditions. For this reason, Chevrolet has come out with an auxiliary radiator kit to supplement the engine cooling on the C7. Since we plan to drive our car on the track, you can bet we are going to install this!


 

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03

Project DBA R35 GT-R: Getting the Ultimate Custom Car Cover with Covercraft

by Mike Kojima

The MotoIQ Megashop is in a pretty dusty industrial area in So Cal. Dust gets into our shop and mixes with the normal shop dirt of metal filings and other stuff that naturally flies around when you work with cars.

So unfortunately, some of the nicer cars in our fleet end up being quickly covered by a mixture of nasty shop dirt and neighborhood dust that can turn a freshly cleaned and detailed car into a pigpen in as little as a week. 


 

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31

Project C7 Corvette Stingray Z51: Drivetrain Improvements

by Mike Kojima

The C7 Corvette is truly an exotic car, and we cannot believe the amount of state-of-the-art super trick features it has to offer for the price it commands. One of these features is its rear-mounted transaxle.  Mounting the heavy transmission in the rear of the car and combining it with the differential is a cool way to save weight and helps the Stingray achieve its 50/50 weight distribution.  


 

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26

Project DBA R35 GT-R: Starting the Suspension Revolution with KW Suspension and Forged Performance

by Mike Kojima

It's been a long time since we even mentioned anything about our Project R35 GT-R. We had plans for the car but never could find the time to work on it. The other issue was that the R35 is a world-class supercar, and it is very hard to improve on a car like this without messing it up. It is easy to make it worse with ill-conceived aftermarket parts. 


 

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18

The Spoon Center Drive Civic: 2017 Changes

by Mike Kojima

2016 was a pretty disappointing Super Lap Battle for Spoon USA.  In the rush after the Formula D season to upgrade the cage, repair the broken transmission and switch to a center seat driving position, the car was not fully ready for the 2016 Super Lap Battle and it showed with a slower lap time than it's winning 2015 speed. A little time was needed to finish the car off and that was not happening due to the end of the FD season, SEMA and everyone's time commitments. 


 

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10

Unpimp My Ride: Transforming a Modded BRZ Into a Civilized Daily Driver with Pedders, Verus Engineering and ARK Designs

by Mike Kojima

Not all of us want a race car for the street. Although many of us are hardcore track day participants, autocrossers or canyon runner nuts, there are a lot of enthusiasts who don't want a super edgy race car with a license plate as a commuter or daily driver.  


 

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03

Project Corvette Stingray C7 Z51: Body Modification

by Mike Kojima

Typically aftermarket aero parts are lame; they don't fit and have gaps. They require you to drill holes in your body panels for sheet metal screws. The carbon deteriorates in the sun and gets cloudy. Not so for these Chevrolet Performance offerings. They fit perfectly and are built to the same OEM durability standards as the car!


 

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26

Building an FA20 Race Engine for Michele Abbate: Part 1- Planning the Internals

by Mike Kojima

We have known Michele Abbate ever since she was a college student doing track days with her trusty Mazdaspeed Protege and have followed her career as friends as she has progressed up the ranks from recreational driver to a Scion Sponsored driver in SCCA's GT1 class. 

Up to now, Michele has been running her car with a bone stock FA20 engine at a very low boost street blower drive ratio. Although this is decent power, she needs a lot more to be competitive in one of SCCA's fastest classes for production-based cars. 


 

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08

Project C7 Corvette Stingray Z51: Suspension Upgrades

by Mike Kojima

In previous articles about our Project C7 Corvette, we got into the high tech chassis construction of the C7 that rivals the stuff found in exotic cars for a fraction of the price. We also did our baseline testing of the car at Buttonwillow Raceway to get an initial impression of the car. We were quite impressed with the results. In stock form, the Corvette is one of those cars that is so good from the factory that heavy-handed, poorly conceived aftermarket suspension mods can ruin.


 

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31

An inside look at the Feal 441 Suspension for the B13 Sentra SE-R!

by Mike Kojima

The original B13 Sentra SE-R has always held a dear spot in many of our hearts. Produced from 1991 to 1994, the SE-R combined the lightweight shell of the Sentra coupe with the sparkling performance of the beloved SR20DE engine. For its time, the SE-R offered a great performance bang for the buck, and to this day, it has scores of hardcore devotees who treasure them.


 

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16

We Look Inside Fredric Aasbo's Papadakis Racing Toyota Corolla iM Drift Machine

by Mike Kojima

It is really hard to build a competitive car in Formula Drift nowadays. The rules set is mature, and the competition is ruthlessly tough. When even the best teams develop a new platform, it can take a whole season to sort a new chassis out. A radically different chassis can take a couple of seasons for even a top team to get competitive. Not so for Papadakis Racing and their Rockstar Toyota Corolla iM that they built for 2015 Formula Drift Champion, Fredric Aasbo.


 

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05

Tested! Weego's Lunch Box Automotive Power Source

by Mike Kojima

We get all sorts of cool stuff in the mail at MotoIQ's palatial mega-garage. Manufacturers send us stuff in hopes that we will test it and write about it. This means that we have more than our share of miracle lubes and additives, car care products and weird gadgets. Most of these things end up not working, so well so you never read about it here. However, the other day we got a box from a company we had never heard of called Weego.


 

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20

Project C7 Corvette Stingray Z51: Improving Stopping With a Chevy Performance Big Brake Upgrade Kit

by Mike Kojima

When we did our baseline test of Project C7 at Buttonwillow Raceway configuration 13 CW, we were pretty impressed with the stock Z51 Stingray's on-track performance. We felt the chassis was set up pretty well for the wheel and tire configuration that came on the car, and the whole chassis calibration was matched to the amount of tire the stock car had and the power level of the engine. 


 

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