Young Version — August 1999
An archive project by Flock MFGNew issue alerts →
About this issue
The August 1999 issue of Young Version explores drift setups versus grip tuning through 22 shop demo cars, including S15 Silvias from Mine’s and Kazama Auto. Features cover front-wheel-drive builds taking on high-powered 4WD rivals, choosing a first drift car, and reviving a used AE86 Trueno on a ¥1 million total budget. Suspension fundamentals, engine-oil selection, rotary maintenance, new-parts tests, and reports from Hiroshima and California round out this look at Japan’s late-1990s tuning scene.
242 available scans from Young Version — August 1999, 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 34 — English draft translation
Captions and page details
Iridium alloy.
Ultra-fine 0.4 mm electrode.
World's first.
The ultimate achievement.
.
Spark…
A new-generation high-performance spark plug that brings out more of your engine's performance.
POWIUM
Featuring an ultra-fine 0.4 mm iridium-alloy electrode, the Iridium Power spark plug combines a highly responsive engine with quiet operation. Take spark performance to the limit and enjoy a higher level of driving: faster and more comfortable. Denso proudly introduces Iridium Power!
POWER
DENSO
IRIDIUM
Comparison of center-electrode diameters.
2.5mm
0.4mm
Conventional plug (model W1XRU).
Iridium Power (model IW16).
DENSO
SPARK PLUGS
Denso Corporation.
Tel. (0566) 25-6724. Website: http://www.denso.co.jp/. To request a catalog, write your address, name, age, and occupation on a postcard, attach the catalog-request coupon, and mail it to the address below…
.
1-1 Showa-cho, Kariya, Aichi 448-8661.
YV-07
Catalog-request coupon.
Denso Corporation.
Sales Planning, Section 7.
Reliable ignition even at idle, with quieter engine noise.
Comfort.
Delivers a highly responsive engine and improved acceleration.
Acceleration.
UP
It reduces misfires at idle, when ignition can be poor. As a result, idle speed is more stable, engine noise is quieter, and fuel economy improves.
UP
Even when engine speed is unstable, it provides reliable ignition. Acceleration performance improves compared with standard plugs.
At an air-fuel ratio (A/F) of 13.5.
Difference in engine speed (test with idle control off).
A difference of 0.7 seconds.
Acceleration performance comparison graph.
Iridium Power.
700
Engine speed (rpm).
(water-cooled…).
Vehicle: 250 cc.
(two cylinders).
Iridium.
150
（km/h）
Standard spark plug.
(K20PR-U, center-electrode diameter 2.5 mm).
650
Condition: held in 6th gear.
Automatic test equipment.
Full acceleration from 50 km/h…
Standard spark plug.
（W27EMR-C
Center-electrode diameter: 2.5 mm.
Power.
50
100
Elapsed time (seconds).
30
20
10
0
600
Full-throttle acceleration.
All data are based on Denso's tests. Values may vary depending on conditions.
As of June 1999.