Tech

 

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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07

Turbo Tech: Size Matters! - Part 2

by Khiem Dinh

In Part 1 of Size Matters, we went over the basic concept of sizing the turbo for the application and desired torque curve shape to match the intended use of the vehicle. You know, because a couple million people a year ask what size turbo they should get for their _______ (insert application here, i.e. car, motorcycle, boat, scooter, lawn mower, etc). Once everyone gets a bit more turbo savvy, they learn of the concept of boost from a small turbo does not equal boost of a big turbo. Well, we’re going to explain why.


 

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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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31

Project E46 M3: Part 10 - Exterior Upgrades For A Cleaner Look

by Pablo Mazlumian

Take a look as we enhance our E46 M3's appearance with a new carbon fiber splitter, carbon fiber rear diffuser, and a plethora of underside neon lights! (think about what day it is before you flame us).


 

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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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26

Wrench Tip: Save your Exhaust Hangers!

by David Zipf

Do you have broken exhaust hangers?  Are you sick of them?  Well then try this Wrench Tip to stop them from coming back.


 

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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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24

Project E39 M5, Part 2: Installing and Testing the Corsa Performance Exhaust

by Martin Gonzales

After ensuring we could stop our newly acquired fun-machine in a previous installment of Project BMW E39 M5, it was now time to let some ponies loose! Our goal; produce more power while maintaining the “quite refined” feel of our performance sedan. It’s no secret the S62 power plant in the BMW E39 M5 was extremely muffled and restricted from the factory. With a price tag rivaling a large down payment on a house, those who could afford a new E39 M5 back in the day were more interested in impressing their power lunch buddies with the M badge rather than with the rumbling performance notes the S62 could belt out. So in the name of sales numbers BMW, like any other manufacturer, put a muzzle on the ol’ girl leaving the performance enthusiast longing for more. But seriously though, what’s the point of having a 400hp engine if you can’t hear and enjoy it?!


 

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22

Project Tundra: Getting More Grip with an Auburn Gear HP Limited Slip Differential

by Mike Kojima

Supercharging Project Tundra is one of the best things we have ever done to any project vehicle in the MotoIQ fleet.  The TRD supercharger has proven to be totally reliable in thousands of miles from towing up hill in blazing heat to driving all over the place.  It has also proven to be economical as our normal driving gas mileage has not changed at all.  If anything the large amounts of power have had only one negative effect on the truck, no traction.  To help deal with this we obtained the only limited slip diff on the market for late model Tundra's, the Auburn Gear HP Limited Slip Differential.


 

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19

Roll cage fabrication, 240sx, S13, Nissan, Silvia, 180SX, land speed racing, SCTA, Racecar, s14, s15, 200 mph club, land speed records, blown gas coupe, moto iq, annie sam, chuck johnson, joe lu, el mirage, bonneville, team rod riders, Jim Pierce motorsports, KW suspension, SPL Pro suspension, Fastbrakes, energy suspension,

Project Land Speed Racer 240SX: Chassis Prep and Roll Cage Fabrication

By Chuck Johnson
 
Remember when Project Land Speed Racer 240SX first came into the hands of Chuck Johnson? In this Flashback Friday see where the record breaking first got started...  The beginning of any good sedan type racecar build almost always starts with ruining a perfectly decent streetcar. In the case of Project Land Speed Racer 240SX though, I'm not sure if we are really ruining a perfectly good streetcar. Honestly, from the looks of things, it must have been owned by a series of wannabe dorifto hacks before falling into my hands. 

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15

BPG's BNR32 Skyline GT-R Time Attack Special

by Mike Kojima

Some of the cars at Australia's World Time Attack or WTAC for short are so amazing and so exotic that for most of us, we can just look and drool.  We were looking at cars to feature and we wanted to show what could be done for a moderate amount of cash by regular people.  Clean solid work by smart people but nothing that needed open wheel or prototype levels of engineering and fabrication skill.  In short, something that most of us or a good local shop could build with a regular person reachable budget.


 

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11

Wrench Tip: Creative Spark Plug Removal

by David Zipf

How do you replace the spark plugs in a V-block engine when there are items like brake boosters, fenders, and other junk in the way?  U-joints sometimes work, but when that fails (or you forgot to pack them when you moved), try this tip.


 

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