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OKAY...
You're sick of red and don't really care how
mondo the new ATC 250R is. It could be turbo-injected
with a toaster mounted on the handlebars,
and it still wouldn't change things. You've
forked out the change for a new Tri-Z Yamaha,
and you love it. A little more engine juice
wouldn't hurt and injecting a slice of life
into the wallowing, too soft suspension would
be a welcome relief. What's the plan? The
wallet is thin, the bucks are short.
WITH A LITTLE HELP
FROM OUR FRIENDS...
There's a department at Yamaha Motor Corporation
that deals with the testing and development
of Yamaha's equipment. These surgeons spend
countless hours at the dyno with bloodshot
lips and bulging eyes, seeking methods of
improving their machines. At the dyno they
learn which mods show substantial gains; in
the field they test their findings to see
if they actually work. The results are sent
out to their dealer network. These sacred
studies are labeled the Wrench
Report.
TEMPLE OF THE SOOTHSAYER
The Yamaha Wrench
Report deals with cost-effective ways
to modify and dial-in your machine. Most of
the mods deal with coaxing more power out
of the stocker, plus suspension setup and
tuning. Dealing with the demand for more charge
out of the powerplant is handled in two stages:
the moderate level and the race-face plateau.
Both start with similar porting updates to
the cylinder. The big-time racer stage is
suggested for experienced riders who can manage
the high-rpm, fine-Iine powerband characteristics.
Continued...
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