Designed not only to meet but exceed USCG carburetor guidelines, Marine Speed Demons are the standard for marine carbs, ideal for enthusiasts who want to repower or upgrade engines with cam profiles up to 240° duration at .050" lift. They also share many great features of their land equivalent, the Speed Demon.
Note: Demon float bowls use special 9/16" x 24 TPI inlet fittings available in standard, filtered, or swiveled sizes.
Highlights
650, 750, or 850 cfm
Contemporary design
J-Tube Bowl Vents
Sealed Throttle Shafts
Removable Billet Baseplate
Billet Metering Blocks
Built-In Power Valve Blowout Protection
Four-Corner Idle Adjustment
Large-Capacity Float Bowls with Sight Glasses
Most common tuning parts interchange from other manufacturers
Billet Baseplate The first large carb with removable baseplate. Billet baseplates on applicable Demon carbs are virtually unbreakable, unlike their cast counterparts.
Air Intake A new die-cast technique provides the most accurate method of producing concentric venturi without misalignment or shift.
Fuel Bowl Demon float bowls come complete with sight glasses, which permit float level adjustments without risk of fuel spillage.
Metering Blocks CNC-machined metering blocks from billet aluminum prevent porosity and variations in the metering circuits.
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