Entries for 'Mike Kojima'

24

Extreme Engine Tech: Building the Ultimate K24 Part 1 The Cylinder Head!

by Mike Kojima

Modding late model Honda/Acura engines is somewhat problematic lately.  Take for instance the late model K series engine.  Once probably the best naturally aspirated inline four cylinder production engine by far, the K motor in it's latest variant, the K24Z7, is a neutered, decontented version of its former self.  Found in the current 2012 and up Honda Civic Si and the Acura ILX, the K24Z7 still boasts a decent 205 hp and 174 lb ft of torque. This is slightly better power and much better torque than the much acclaimed bone stock K20A2 that everyone knows and loves.

Can the late model K motor be saved?  We will give it a shot with help from the guys at Motovicity Distribution!


 

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18

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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17

Help For Yukio Taira!

Industry News (please share): This Thursday a good friend of MotoIQ and a well known face in the industy, Yukio Taira the Aftermarket Marketing Manager at Turbo By Garrett, had a stroke on his flight to Road Atlanta where he was headed to handle race support. If you're someone that Yukio has helped with sponsorship or just a caring person please show your support as the medical and family expenses will be piling up during his recovery time.

Please visit Yukio's Go Fund Me page and help out.  Every little bit counts.

MotoIQ has in its thoughts the Taira family, Yukio's friends and everyone in the industry that is impacted by this tragic incident.

God Speed.


 

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03

Sneak Peek- Matt Coffman's 2015 Formula Drift Nissan S13

by Mike Kojima

21 year old Matt Coffman is currently in his second year of Formula D competition.  The second youngest driver on the Formula D circuit, in his freshman year Matt campaigned his S13 to 33rd in points.  Lacking experience Matt had a tough time on his first Formula D tour and didn't qualify for 3 of the 7 rounds.  For his second time around, Matt and his team have attacked the season with renewed vigor, building a new car and having an aggressive pre season test schedule to enable Matt to become more familiar with his new ride.


 

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26

Sneak Peak-Tanner Foust's 2015 VW Passat Formula Drift Machine! 

by Mike Kojima

Tanner Foust is returning to Formula D and he bringing his GRC sponsors VW and Rockstar energy drinks with him. Unfortunately, Tanner is only going to be at selected events on the FD schedule that don't conflict with his other professional commitments.  Tanner's return to drifting is also significant as he is  teamed up with Star Driver Fredric Aasbo making a Rockstar dream team of drifting.


 

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23

Extreme Engine Tech, Technosquare's Monster Naturally Aspirated Toyota 4AG - Part 3 (VIDEO INSIDE!

by Mike Kojima, Photos & Video by Jeff Naeyaert

Way back when the third and final installment of this build was part of our best of 2010 series. It's still a great article presented here for you to check out one more time. Follow the links, read all three parts and enjoy!

When we last left the Technosquare crew, they had completed the stroker 4AG engine's bottom end and assembled the cylinder head.  Now it was time for the engine's final assembly and installation into an AE86 time attack car.

Click Here for Part One

Click Here for Part Two


 

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19

Project Ford Fiesta ST- Making the Jump to a Race Car with SPD Motorsports Part 2!

by Mike Kojima

When we last left our Project Ford Fiesta ST it was being converted into a race car by the capable hands of SPD Motorsports.  As progress continues, SPD  is working on installing a crash resistant fuel system using components from Fuel Safe, Deatschwerks, and Aeromotive. Other details like Lexan windows, brake ducting and the interior are coming together as well.


 

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16
Extreme Engine Tech: Technosquare's Monster Naturally Aspirated Toyota 4AG - Part 2

Extreme Engine Tech: Technosquare's Monster Naturally Aspirated Toyota 4AG - Part 2

by Mike Kojima

In our last edition of the building of Technosquare's monster Toyota 4AG, we mainly looked at the details of the bottom end.  Now we will finish our tour of the bottom end and delve into the engine's cylinder head which is the heart of any high performance engine.

The 83mm x 83 mm stroker motor gives 1800cc.  The 200 extra cc's makes a huge difference, fortifying the 4AG's notoriously narrow power band. The engine cranks out over 250 crank hp, more than the most highly developed Formula Atlantic engines of yore and 30 more hp than the previous 1600 cc version of this motor. Here it is, re released again for your reading pleasure!


 

 

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12

Project Tundra: Leveling it out with a Hellwig Big Wig Air Lift

by Mike Kojima

In the last edition of Project Tundra, we had installed Hellwig's adjustable rear antisway bar in an effort to improve our truck's balance and limit body body roll to help keep our stability control from activating prematurely. 

Now to finish up our chassis tuning we wanted to address a problem all trucks that tow have. With tongue weight in place the back of a trucks sags lower and the front lifts higher.  This makes the handling a little squirrely at times, the steering getting light a lot due to the geometry changes of the front end when under droop. The heavily loaded rear suspension is also prone to bottom out with bigger enclosed trailers which can make things interesting and possibly damage the trailer jack.

To fix this by leveling out our truck without hurting our ride, we decided to go with a set of Hellwig Big Wig air bags.  The air bags can increase the rear suspension's capacity by 2700 lbs and restore the proper ride height improving stability and laden ride.  When finished towing, the bags can be depressurized for a stock ride height. and smooth ride.


 

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09
Technosquare Howard Watanabe 4AG Engine Build

Extreme Engine Tech:  Technosquare's Monster Naturally Aspirated Toyota 4AG - Part I

by Mike Kojima

The Toyota 4AG is a historic engine, one that was essential in launching sport compact car culture in the USA.  In 1985 the 4AG first rocked the automotive world.  It was the standard engine in the Toyota Corolla GTS, the famed Hachi Roku AE86.  The AE86 was the last of the RWD Corollas and Toyota made history by equipping it with the revolutionary 4AG engine.  Not to be forgotten, the AW11 MR2 mid engine sports car was also powered by the 4AG.


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06

Project VA WRX, Upgrading the Bushings and Swaybars with Superpro Part 1

by Mike Kojima

We decided to be different and tackle the Subaru WRX as our latest Project Car because it's big sister, the STI has been always getting all the attention.  More people can afford the WRX which we consider to be a performance bargain and more enthusiasts drive them.  We will be working with ARK Design to get this car going and make it more fun to drive. 

One of the first things we did as is typical on most of our project cars is to work on the suspension first.   Since we are still deciding on what to do for dampers on our project, we decided to start with changing the soft rubber suspension bushings with some polyurethane parts by Superpro.


 

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05

Project Tundra, Getting More Cornering Power (and less stability control activation) with a Hellwig Adjustable Rear Antisway Bar

by Mike Kojima

If you have been following Project Tundra, you know we have been struggling with excessive activation of our truck's stability and traction control systems.  The improved power of our supercharged engine and additional traction of our larger tires have been driving the electronic nannys of the truck's OEM systems crazy.  We were hopeful that a new adjustable rear antisway bar from Hellwig would help.


 

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30

Evaluating the HKS Max IV SP S2000 Coilover Suspension System

by Mike Kojima

The guys at Motovicity have been singing the praises of HKS's new Max IV coilover systems to us for a while.  While we have generally always been impressed with HKS's tidy OEM like engineering, it was a while since we had experienced their coilovers.  In the early 2000's we had tried some of the original Hipermax suspensions on a few of our cars and although we found them to be of high quality and smooth riding, they did not have enough spring rate and damping for serious performance with big sticky tires and especially track use.  We sort of regulated the brand as nice for street use only and looked toward other places for suspension for our projects.

Fast forward 10 years and 4 generations of Hipermax suspension later, plus Motovicity's raving about them made us eager to get our hands on the Hipermax or Max 4 suspension system for another review.


 

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29

Spotted: The New 2016 Sixth Generation Chevy Camaro!

by Mike Kojima

Our government connection West Virginia Legislator Delegate Gary Howell sent us these pictures today.  Apparently Gary was eating at a Chick-Fil-A and noticed that a disguised vehicle was sitting in the parking lot.  He managed to snap a few pictures before the car's driver sped off in it. If you look close you can see his reflection in the glass! We think that the heavily disguised vehicle is the new 2016 Camaro.  In fact, we're just about sure it is.


 

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22

Project SEMA Scion Tuner Challenge FR-S, Working on the Cosmetics

by Mike Kojima

In our previous installments of Project SEMA Scion Tuner Challenge FR-S we have been working on getting the performance of our sports coupe up to snuff.  Now it's time to look at stuff that we usually don't care that much about: the looks stuff and cool JDM bits needed for car show points!

Since we figured that every FR-S at the SEMA show was going to sport the new Rocket Bunny wide body kit, we decided to do something completely different. We came up with a theme of restraint.  At the risk that no one would get it, we decided to go MotoIQ style and come up with a look of a practical daily driver car, one that would look trick with a few high quality parts but not something that would scream look at me.  Would the judges get it?  Probably not but we had to do something radically different. 


 

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15

Project Ford Fiesta ST- Making the Jump to a Race Car With SPD Motorsports!

by Mike Kojima

Project Fiesta ST's owner started to really get the track day bug after we did our initial round of mods by installing suspension into the car.  He then shocked us by telling us he wanted to take the car off the street and turn it into a full time track car and eventual race car.  He suddenly gutted a lot of the car's interior out of it and wanted a cage.

We decided that if the car was going to become a race car we had better go all the way and do it right.  We enlisted the help of Scott Dodgion of SPD Motorsports to help us with his expertise in building real nice competition cars.


 

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08

Project Fiesta ST- Improving the Brakes with a Gold Coast Automotive Big Brake Kit and a Ford Racing Brake Controller

by Mike Kojima

When we last left off, our Project Focus ST had gotten a new set of coilovers from ST Suspension and a few other bits from mountune. Well, the owner of our car has just gotten the track day bug and decided to take the Fiesta ST off the street and build a race car out of it.  The car has been getting converted to a real race car at SPD Motorsports and part of that conversion has been upgrading the brakes to bigger units from Gold Coast Automotive with some electronic help from Ford Racing.


 

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05

Saving (Lots) of Weight with a Pegasus Racing Ballistic Battery

by Mike Kojima

"No way is this thing gonna start the car" is the first thing we said when we opened the box containing the Ballistic Battery we had purchased from Pegasus Racing.  Even though the tech guys at Pegasus had assured us that this battery could easily start and run the big 8 liter Chevy engine in one of our race cars, when we hefted it's 6.5 lbs, we knew that there was no way it could!


 

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Posted in: Magazine, Tech, Engine
04

Project Tundra: Fixing the Brakes with Stoptech

by Mike Kojima

So as we alluded to in our last article, our powerful supercharged Tundra without a limited slip was continually activating the Trucks electronic nannies.  With the more powerful engine, the electronic LSD was working the rear brakes constantly trying to keep one tire fire under control and with the added cornering forces that our bigger tires allowed, the stability control was grinding away at the front brakes in tuns all the time.  The electronics were probably causing the brakes to be used at twice the normal rate.

We had tackled some of the issue by limiting body roll with a Sequoia front and TRD rear anti sway bar and turning up the stiffness of our King Adjustable shocks.  Adding an Auburn Gear Limited Slip Differential also helped a lot to keep the electronics from grinding away at our brakes.  However our brakes and rotors were shot with the rear brakes worn to the backing plates and we had to replace those ASAP.

We turned to Stoptech for some help in the brake replacement department with some new rear sport rotors and some less aggressive brake pads in the hopes of reducing brake dust and rotor wear for this brake service period


 

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01

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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