Tech

 

05

 

Project EVO X, Keeping the SST Transmission and the engine oil cool!

By Mike Kojima

In the last editions of Project EVO X we worked to get our car's handling and stopping power up to world class standards and eagerly attended our first track event.  However we were really disappointed when our car went tilt after just a few laps at Streets of Willow Raceway.  When the SST dual clutch transmission in the EVO X MR gets too hot the engine's ECU automatically makes moves to protect the transmission and the car goes into limp mode killing all measures of speed until the temps drop.  In our hot Southern California climate, this happens so fast that it’s a frustrating experience and probably not good for the transmission either.


 

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02

Mazda Skyactiv G Engine

13:1 Compression and 40 mpg on 87 Octane fuel?  Introducing Mazda’s Skyactiv Technology

By Mike Kojima

Does the idea of a super efficient, reasonably performing, fun to drive car with low operating costs sound appealing to you?  If the car is green as well does that seal the deal?  Are you one of the few people with a clue that realizes that a hybrid isn’t all that green? Well Mazda has an answer to all of this called Skyactiv technology in all of its clever jinglish.  Skyactiv Technology is a fresh holistic look at how cars are engineered.


 

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30

Don't Trust Strangers!  How Dynos Lie and When to Believe One

By Khiem Dinh

Ah yes, the dyno plot and power numbers.  The dyno plot is the subject of many forum pissing matches, the holder of false prophecies, the teller of partial truths…  Reading the forums, you would be led to believe that everyone had their car dyno'd on a "low reading" dyno.  Well, except for in South Florida; there must be some magic octane booster in the air down there.  Dynos are a great tool for tracking performance changes, but trying to compare across different dynos on different days with different cars is borderline meaningless.  We’re here to tell you why.  We'll also tell you the best case for getting results you can compare.


 

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Posted in: Magazine, Tech
28
25

Sarah's intercooler

Ask Sarah: What are water to air intercoolers?

by Sarah Forst

Lately I have been searching for information about "water to air intercoolers."  I have seen these in some of your articles but not much information is mentioned. 

Got a difficult tech question? Email Sarah at asksarah@motoiq.com


 

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23

Formula SAE: What a Few Car College Gear Heads Can Do In Their Free Time

by David Zipf

A good percentage of MotoIQ's staff  and readership is comprised of Mechanical Engineers.  That title isn't given to just anyone, you have to work through a (minimum) of four years of hard college work full of long lectures, late nights, and a hermit-like social life.  So what does a car geek do when he's tired of working the books and nerdulator?  He (or she) finds the campus Formula SAE team and wrenches of course!


 

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18

What the hell happened to project silvia?

What The Hell Happened to Project Silvia?

by Dave Coleman

A simple head swap gone horribly wrong drags Project Silvia out of retirement and into the modern tuning world.


 

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17

Project EJ Honda Civic: Skunk2 Pro-C Coilovers

by Annie Sam

My Koni Yellows coupled with the Ground Control coilover kit served me well for street use, and I think I got more than my money's worth out of these shocks over the last eight years. Now that I am no longer a starving college student, my grown up self decided that I should upgrade to a grown up set of coilovers. After a little bit of research, we decided to go for a set of Skunk2 Pro-C coilovers for Project EJ Civic.


 

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15

K&N’s Super Unlimited Infiniti G35 Circuit Battle Slayer

K&N’s Super Unlimited Infiniti G35 Circuit Battle Slayer

by Mike Kojima

We have been witness this year to the sheer power and speed of the K&N Infiniti G35 driven by Paul Brown, which is currently tied for second place in Redline's Pro Track Challenge.  What is unusual about this G35 is that it is a corporate car owned and constructed by K&N as an in house engineering effort.  Usually cars like this are regulated to dressing up the floor at the SEMA show then making rounds at car shows but in K&N’s case it is heartening to see the car out on the track kicking ass and taking names!


 

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10

Project 200SX: Time Trial Bound - Part 1

by Wes Dumalski 

Track Photos by Tom Hitzeman

Let's pretend you spend years of your life, thousands of your hard earned dollars, a pint of blood, a gallon of sweat, and countless four letter words building a car. It goes through various stages in its life, and the end result of the project is a car destined for the track.... Two possible outcomes for this somewhat common scenario.... You either become a hard parking car show stunta with a track worthy car or you actually take it to the track. Obviously we chose the latter. The next question was if our last name isn't Johnson, Coleman, or Kojima.... How do we enter the competitive world of motor sport?

The answer..... Time Trials. 


 

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08

Project S2000 - Oil Cooling

by Khiem Dinh

Tracking the S2000 and monitoring the oil temperatures has taught us one thing: it runs hot!  Even with the reduced coolant temperatures afforded by the Koyo radiator, the oil temperatures were still too high for a car to be tracked for long-term reliability.  This is occurring at completely stock power levels even (the more power an engine makes, the more heat it makes and consequently needs to reject).  High oil temperatures lead to reduced oil viscosity and faster oil breakdown.  Low oil viscosity can mean inadequate oil film strength and thickness with the end result being metal-on-metal contact between engine components.  While low oil viscosity may not grenade your engine immediately, it will lead to accelerated wear of components.


 

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02

Air tool sockets

Project Garage Part VI: Air Tools

By Sarah Forst

Air tools are not just about busting nuts. Pneumatic tools are more efficient than electric tools- they can exert more force using less energy and complete jobs more quickly.  


 

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01

 

Introducing Project 240SX- Land Speed Racer

by Chuck Johnson

The project mission is simple:  Build a bad ass S13 240SX, conquer a land speed record, and join the infamous Bonneville 200 MPH club.  


 

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28

Crankcase Ventilation Explained - N/A Edition

by Ben Fenner

If you're reading this you've likely asked a question about crank case ventilation, catch can placement, correct PCV hose routing, or similar.  Grab yourself a beverage of your choice, sit back and relax. Keep reading to have all of your questions answered.


 

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Posted in: Magazine, Tech, Engine
24

Does Length Matter?  - Part Deux

By Khiem Dinh

In part I, we looked at the effect of connecting rod length on dwell time of the piston around top dead center.  This was determined by plotting the position of the piston in relation to crank angle.  Using some physics and calculus, we can also determine the velocity and acceleration of the piston in crank angle.  If we assume an angular velocity (or revolutions per minute), we can determine the velocity and acceleration in the time domain which is what everyone is more familiar with.


 

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Posted in: Magazine, Tech, Engine
19

WPC Treatment saved our engine!

WPC Treatment Saved Our Engine!

By Mike Kojima

We had just installed a freshly built SR20DE engine for the Dog Car.  This is the B14 Nissan Sentra race car that we have been campaigning for many years in road racing and time attack which had been sitting dormant since 2006.  With the advent of Redline’s MPTCC race class we decided to dust the car off, freshen it up and have Formula D drifting ace Dai Yoshihara campaign the car in the TU class.


 

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18

physics of tires, project ford mustang

The Physics of Tires - Project Ford Mustang 5.0

By Vince Ili 

In Part I of his Ultimate Guide to Suspension and Handling, Mike Kojima says that one of the biggest ways to improve a car's handling is to improve its tires.  I experienced this first-hand recently when I upgraded the wheels and tires on my Mustang.

But how do tires improve your car's handling and performance?  In order to discuss that, we need to talk about a little thing called traction, also known to us engineering geeks as friction.


 

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14

KW Suspensions New Coil Over System for Nissans 300ZX!

KW Suspensions New Coil Over System for Nissan's 300ZX!

by Mike Kojima

KW has been looking at their product line up and has made a decision to start adding some applications for some of the classic Japanese exotics from the Japanese supercar heyday of the early to mid 90’s. KW has already come up with coilovers for the MK IV Supra and the NSX. The FD RX-7 is on the R&D schedule and we helped with the R&D for the latest Japanese classic addition, the Nissan Z32 300ZX.


 

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11

Inside Look: Dino Crescentini's StopTech Porsche 911 GT3

By Steve Rockwood

Carroll Shelby once said that to make a small fortune racing, you must first spend a large one.  Of course, Mr. Shelby was also the spokesperson of some snake oil company that combines the last letter of the alphabet with the shortened version of the word maximum when Global Motorsports Group (GMG) became more than a twinkle in its founders' eyes.  Founded in 2001 by James Safronas and Fabryce Kutyba, GMG started its existence in a 1200 sq ft facility, and has since grown to fill its current 15,000 sq ft stable with high-end hardware that features charging bulls, prancing horses and a slew of crests from Stuttgart.  One of the many purebreds GMG looks after is the Pirelli World Challenge GT #4 StopTech Porsche 911 GT3, driven by Dino Crescentini, CEO  of Centric Parts and StopTech.


 

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27

The Kid Rocks!   A Look Inside Walker Wilkerson’s Nissan S13

The Kid Rocks!   A Look Inside Walker Wilkerson’s Nissan S13

By Mike Kojima

Walker Wilkerson has suddenly burst upon the Pro Drift scene.  At the Long Beach season opener, the 21 year old College student made a sudden appearance on the 2011 Formula D tour in his striking lavender hued Nissan S13, qualifying well and beating out many seasoned pros.  In his rookie year, Walker has surprised many drift fans by getting several high qualification rounds and decent finishes thus far in the season and looks to be a shoe in for rookie of the year honors.


 

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