Engine

 

24

Project 350Z- Building a New Engine Part 3

by Mike Kojima

In our last edition of Project 350Z we started to assemble our VQ35DE and got the bottom end pretty much done.  Now we finish off our engine and take it to Church Automotive Testing to get our factory ECU tuned using the UpRev Osiris tuning package.


 

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09

Project 350Z: Buidling a New Engine - Part 2

by Mike Kojima

When we last left off on Project 350Z, we were in the process of assembling a group of parts to enhance the durability of our project car.  As we stated before we were not looking at building the ultimate naturally aspirated VQ35DE but simply a more durable one that could hold up to a life of track days, drift days and stunt driving practice days. If we could get a little more power out of the engine while we were in there, all the better.


 

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13

Project 350Z: Building a New Engine - Part 1

by Mike Kojima

Our Project Z was a pretty good example of what a naturally aspirated VQ35DE could do. However, our  VQ had become old and tired. It was worn out from a lot of minimal maintenance street miles, track days, drift and professional stunt driving practice and had started to develop some rod knock.  Luckily we were able to stop before serious damage to the engine internals resulted.  However an engine rebuild was in order. 

Our objective in building this engine is not to build the most awesome NA VQ possible or even to get tons more power, but rather to perform an economic build to address some of the VQ's durability shortcomings, replacing stock parts when necessary with some good quality aftermarket bits.


 

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29

Fluidampr FR-S/BRZ Crankshaft Damper Development

Fluidampr performance dampers challenge the misconception that a viscous damper is only suitable for large, low rpm industrial and commercial diesel engines. Follow the design and development process, plus comparative testing of a new Fluidampr performance damper for the Subaru FA20 / Toyota 4U-GSE 2.0L opposed-four cylinder ‘boxer’ engine. The engine is featured in the popular 2013-present Subaru BRZ, Scion FR-S, Toyota GT86 and new 2015 Subaru WRX.


 

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16

Demystifying the Camshaft: Part 1 - Valve Events

by Jonathan Spiegel

As we all know, the key to making power is to create pressure in the combustion chamber - and to create that pressure at the right time. This pressure works to drive the piston down in the cylinder and cause the crankshaft to rotate. The more air/fuel mixture you can get into the combustion chamber, the greater your potential for creating more pressure, and more power.


 

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15

Extreme Engine Tech: Building a BMW S52 - Part 2: The Cylinder Head

by Nick Betz

If the engine as a whole is the heart of a car the cylinder head would be all the supporting parts that make the heart pump. Without the opening and closing of certain valves of the heart you can’t get blood to flow into the atriums and out the ventricles. Just like the heart, a cylinder head has multiple valves that need to open and close at specific times to get air in to and exhaust out of the combustion chambers to keep the engine pumping.  


 

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11

Extreme Engine Tech: Building the Ultimate K24 Part 3 - The Finished Goods!

by Mike Kojima

We have been working with Motovicity for the last few weeks to demonstrate the building of a potent Honda K24Z7 motor, built completely from in stock and off the shelf parts available from Motovicity themselves. We chose the K24Z7 as it is currently the OEM engine for the Civic Si and is relatively difficult to modify due to it's emissions bound cylinder head.  Our goal is not to build a dyno queen or a drag motor but to build a strong K motor all from off the shelf parts with the intention of getting the most power possible on pump gas with the widest most useable powerband. 

In the last two editions of our series we focused on the cylinder head and bottom end of our K24Z7. We swapped to an earlier model K20Z3 head  to get Vtec on the exhaust side and and removable exhaust manifold and installed Skunk2 camshafts, Kelford valvesprings and Supertech valves better suited for turbocharged use. For the bottom end we added lower compression JE pistons and stronger K1 rods, removing the problematic balance shafts while we were in there.  

Now it's time to finish off our motor. 


 

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01

Extreme Engine Tech, Building the Ultimate K24 Part 2 The Bottom End!

By Mike Kojima

In the last edition of our series, we had focused on the engines top end switching to a an earlier model K20Z3 head with Vtec on both the intake and exhaust sides of the engine and a removable exhaust manifold all big steps in getting more performance.

Now We will be turning our attention to the engine bottom end, fortifying it for turbo power! Like the head, our goal will be to use off the shelf parts available in stock at Motovicity in the build. This engine is not some super esoteric custom build but one anyone could easily duplicate. 


 

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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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Posted in: Magazine, Tech, Engine
19

Extreme Engine Tech: Building a BMW S52 – Part 1: The Short Block

by Nick Betz

There comes a time in a project build when you just have to throw everything out the window and rewrite your storyboard. Over the years we’ve been bolting on parts to Project E36 323is and not seeing the gains we were looking for. Sure it’s been fun but it’s time to make some real power. We had plans for an M50 manifold swap paired with M3 cams, bigger air meter, headers and throttle body but as the old adage goes, there’s no replacement for displacement, so that’s where our journey has taken us.


 

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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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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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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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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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08

Track Life: Episode 1 - How to Prep Your Car for the Track

by GTChannel

Thinking about going racing this weekend? Karla Pestotnik and Rob Choo use the GTChannel S2000 to show you step-by-step how to change your differential oil, motor oil and transmission oil, as well as how to bleed your brakes and clutch fluid.


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24

Sneak Peek: Bothwell Motorsports Pro Mod Camaro

by Khiem Dinh

The Bothwell Motorsports Pro Mod Camaro plays in the National Muscle Car Association drag racing series where it won the West Division in 2014. The series mandates engines that are either small block or big block V8s with power adders being nitrous, roots blowers, centrifugal blowers, or turbos. You know us at MotoIQ, we like turbos. A pair of turbos is even better.


 

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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
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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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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26

Project SEMA Scion Tuner Challenge FR-S: Getting More Power with an HKS Supercharger and More Cooling with a CSF Radiator 

By Mike Kojima

Our SEMA Scion Tuner Challenge car's progress is coming along nicely.  With all of our other mods coming together we now will focus on getting serious power out of our FA20 engine with an HKS supercharger.  With power comes heat and we will be relying on a CSF racing radiator to take care of our cooling needs. 


 

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