D Car — July 2004
An archive project by Flock MFGNew issue alerts →
About this issue
246 available scans from D Car — July 2004, in right-to-left reading order. Japanese OCR and English translation drafts are available throughout. Drafts have not received exhaustive image proofreading; unreadable source remains recorded in the archival data.
Page 180 — English draft translation
A kit is the easiest way to install it If you want to turbocharge an NA engine—or replace the turbo on a turbo engine—a bolt-on kit is the easiest “drop-in” approach. The kit includes the parts needed for the turbo to function, and it is convenient because everything bolts on. The left side shows the installation process for a Top Fuel kit for the EK Civic Type R’s B16B. It includes a turbo, manifold, front pipe, extension pipe, suction pipe, air cleaner, heat shield, oil lines, and even a pre-tuned computer. Put it together and you’re ready to go—simple!
Turbo swap Install a larger turbo for even more power! If a boost increase is no longer enough, move on to replacing the turbo. A larger unit can send more air into the engine. But bigger is not automatically better: the engine must be able to spin it, and the engine plus supporting components must be upgraded to withstand high boost. Overall balance is what matters.
Captions and page details
3
…guide
Practical…
The power-up method for more power!
You understand roughly how a turbo works from the previous page, right? If so, let’s move on to the practical part and learn how to gain power with a turbo. Follow along!
From naturally aspirated to turbocharged
A close-up look at how a bolt-on kit works!!
Pressure
Intake
Exhaust
Bolt-on turbo
For turbo use
Suction
Turbine
Extension pipe
Air cleaner
Pipe
Installation steps
Let’s watch a bolt-on turbo being installed. The car is an EK Civic with a DOHC engine, and the turbo kit is from Top Fuel.
Intercooler
Actuator
Engine
Common parts
Start with the engine in stock form. First remove the air-cleaner box on the left side of the engine bay.
Stock NA
Exhaust manifold
Air cleaner
When converting an NA engine to turbo, the exhaust manifold must also be replaced.
Common parts
Naturally aspirated engine
Remove the stock exhaust manifold. Once it is out…
…install the kit.
Connect the air intake and turbine to the engine’s intake side with the suction pipe. The installation is complete; fit the computer last.
Boost up An easy way to add power Try this first
Easy, but important
If you already own a turbo car, try raising the boost before spending time and money on a turbo swap. Simply increasing boost can bring a surprising power gain.
This is a boost controller. It lets you set the pressure that activates the actuator.
…that is how it works.
Shortening the actuator link delays when its valve opens, even after the actuator starts moving…
…so exhaust pressure escapes less easily.
…the appeal of turbo tuning
180
The photo shows the HKS T04Z, one of the largest turbos in its lineup outside its drag-racing models. An engine needs considerable displacement to spin a turbo this size.
HKS representative Matsuoka explains the secrets of turbo tuning…
What is the key?
First, make a solid tuning plan! “When tuning a turbo, decide your goal, budget, and specification from the outset. How much power do you want? What budget can you set? What combination will get you there? Without those decisions, the tuning can become mismatched. Discuss it thoroughly with your shop and plan in advance.”
…including labor…
HKS public-relations representative. He often appears at D1 events, so say hello. He is also a big Wakana Inoue fan and has been seriously debating whether to trade a photo book for this turbo… He really is torn!