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Suzuki’s DF150 and DF175 are based
on an all-new inline four-cylinder DOHC
powerhead with a 2,867cm
3
(174.9 cu.in.)
displacement—the largest to date in the
four-stroke, four-cylinder category.
While the added displacement contrib-
utes greatly to exceptional acceleration
and velocity, it doesn’t mean that these
engines are comparatively larger and
heavier in size. To the contrary, Suzuki’s
engineers have targeted these big block
motors to be the lightest four-strokes of
their kind.
Taking advantage of advances Suzuki
engineers have made in four-stroke
engine performance, the DF175 utilizes a
continuously variable valve timing system
much like that found in our flagship
DF250. Both the DF150 and DF175
share other advanced features including
multi-stage induction and a 32-bit
onboard computer that monitors and
controls engine functions. Both outboards
have also gained the CARB Three-Star
rating, which identifies engines that meet
the California Air Resources Board’s
2008 exhaust emissions standards.
Big Block – High Performance Engine