00
0')
lAbovel The VZ250J looks just like a product of the '81 factory efforts.
(Belowl Water-cooled, Pow. Valve engine hes good grunt. strong top end.
Impression: J982 ,Yamaha
YZ250J
.
Yamaha dips
into their bag
of tricks and
pulls out a
•
WInner
By Terry Whytel and Mark Kariya
Photos by Keriye
Yamaha has built a new quarter-liter motocr
bike. It's different, and it works. The 198
YZ250J is not much like last year's Yamaha; i
fact it's not much like anyone else's motocro
machines.
The J model 'crosser shares its
heritage as much with Kenny.
Roberts' World Championship
road racers as with Bob Hannah's
AMA title-chasers.
Water-cooling keeps the motor at
it
IS the Power Valve that controls the
height of the exhau~t port, ala KR's
pavement scorchen and Yamaha'slatest works MXen, and it gives the YZ
pro~r o~ating tem~ratures but
an almost perfect combination of low
end grunt and blazing top speed
Coupled with Yamaha's new Mo'l1OCIl'OII
system, which utilizes a rising rat
linkage and adjustable rebound a
compression damping, the works-I"
power is able to reach the ground wi
more authority than with any pl'eVi"ouI
Yamaha.
The 250J diffen from iu '81
in many other ways. Most obvi
p«hape, is the restyled tank/_t
