[edit]
SHO 3.4 L V8
The V8 SHO appeared in
spring of 1996. It was at 3.4 L and continued many
of the traits of the
SHO V6,
including the aluminum cylinder heads (the V8 SHO
engine has an aluminum block, V6 SHO engine has an
iron block), 4-valve per cylinder DOHC design, but
no
variable length intake
manifold. The V8
SHO has a split port style intake valve setup. The
primary valve is exposed all the time and has the
fuel injector spraying on it and the secondary valve
is only exposed when the Intake Runner Manifold
Control opens the secondary plates at 3400 rpm.
Power was similar too, at 235 hp (175 kW) and 230 ft·lbf
(312 N·m) of torque. This version was retired in
1999 because of changes to the base Taurus it was
based upon for the 2000 model year, and the lack of
a manual transmission as was available with the
prior generation SHO.
Bore and stroke were identical
to the
Duratec 25
at 82.4 mm and 79.5 mm, respectively. The engines
shared other traits as well, and insiders report
that the designs are related, though not closely.
One sign of such similarity is that the two engines
share the same
bell housing
pattern.
Manufacturing was also a
shared process. Ford manufactured the aluminum
engine blocks, using a patented Cosworth process, at
their
Windsor, Ontario
plant, then shipped them to Japan for finishing by
Yamaha. The finished engines were shipped back to
the Taurus plant in
Atlanta, Georgia
for installation.
Unlike the SHO V6, the SHO
V8's
valve
train was an "interference" design, one that is
shared by many engines built today, meaning that the
piston
will collide with the valves if the
camshaft
or
timing chain
fails. Due to some cam sprocket failures, the engine
acquired a reputation for potentially catastrophic
failure.
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THIS ENGINE WAS REMOVED FROM A 99
TAURUS SHO WITH 98000 MILES ON IT. WE REPLACED IT
WITH ANOTHER THAT WE WILL HOPEFULLY HAVE MORE LUCK
WITH. SO YOU'LL NEVER GUESS WHAT'S WRONG WITH THIS
ONE. YOU GUESSED IT CAM TROUBLE.
ONE OF THE CAMS WENT BAD. THE ENGINE IS
STILL SALVAGEABLE, BUT DOES REQUIRE SOME WORK., BUT
IF YOU'RE EVEN LOOKING AT THIS LISTING YOU PROBABLY
ALREADY EXPECT THAT. CAR WAS STILL RUNNING WHEN THE
ENGINE WAS REMOVED BUT WAS ONLY FIRING ON HALF THE
CYLINDERS. THE BOTTOM END SEEMS TO BE JUST FINE.
LOCAL PICK-UP IS MOST DEFINITELY ENCOURAGED ON THIS
MOTOR ALTHOUGH IF YOU INSIST I WILL SHIP. E-MAIL ME
IF I CAN BE OF FURTHER ASSISTANCE.
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