Super Street Network

Due to the EU’s Global Data Protection Regulation, our website is currently unavailable to visitors from most European countries. We apologize for this inconvenience and encourage you to visit www.motortrend.com for the latest on new cars, car reviews and news, concept cars and auto show coverage, awards and much more.MOTORTREND.COM
 |   |   |  The Straight Story Pt.3
Subscribe to the Free
Newsletter

The Straight Story Pt.3

Honda Tuning demystifies the effort and expense that go into creating a competitive all-motor drag car by building our own CRX racer.

Sep 1, 2003

In this third part of a continuing piece, Editor Bob takes notes as all-motor guru Erick Aguilar blueprints and balances the internals of our GS-R powerplant.

0309_02z+1988_Honda_CRX+Block Photo 1/20   |   The Straight Story Pt.3

[1] Our B18C1, fresh from a Golden Eagle sleeve job and ready to be built - or so we thought. Shortly after we deliver the engine to Erick's Racing, Aguilar schools us on the intricacies of building a near zero-tolerance engine and points out some flaws in our progress.

We're big boys. We can take a little constructive criticism, especially from a guy on the verge of a 9-second, naturally aspirated run. Aguilar begins by setting our engine up for blueprinting, a process that involves hand-finishing engine parts to their most ideal specs within production tolerances. Aguilar will also balance statically and dynamically every engine part that rotates and reciprocates. Both blueprinting and balancing seek to reduce friction, wear and vibration, and increase horsepower and reliability.

May not seem like a lot, but Aguilar likes to keep his P-to-W tolerances within 0.002 of spec. "The cylinder wall is all one sleeve," he says. "The straighter it is, the closer it is to spec and the better the engine is going to perform."

Before continuing, Aguilar sent the block to one of his contacts to get it dialed in to his specs. Note that forced induction motors tend to have looser tolerances because they generate more heat. With more heat comes greater expansion, thereby needing more play.

BROWSE CARS BY MARKET

MORE HOW TO

For years Honda/Acura owners have been using chassis codes to refer to their cars, but because chassis codes can vary based on a number of factors, there's a good chance that they've been using the wrong labels
Aaron BonkJul 27, 2020
Eventuri has been a favorite among the most elite and highest-performing European sports cars out there. We see if the hype behind them is real using Sam's Supra.
Sam DuJul 23, 2020
A blowoff valve is designed to protect the turbo against damage. They just happen to make a loud sound while doing it! But the noise they make shouldn't be what you're most concerned about
Evan GriffeyJul 16, 2020
Tires are the most important investment you can make when it comes to your safety and car's performance. There's a lot of factors that go into choosing the right tire, some of which may matter to you more than others
Sam DuJul 13, 2020
At its most basic level, porting the intake and exhaust ports on a rotary engine is the same as porting the cylinder head(s) on a piston engine, in that the objective is to improve airflow in and out of the combustion chambers.
David PratteJul 9, 2020
Sponsored Links

SEARCH ARTICLES BY MAKE/MODEL

Search
CLOSE X
BUYER'S GUIDE
SEE THE ALL NEW
NEWS, REVIEWS & SPECS
TO TOP