Increase performance and simplify the ignition system in your boat by installing our Marine DUI
Distributor! The Marine DUI (Davis Unified Ignition) is a one-piece distributor that is virtually
waterproof and will withstand the severe vibrations of a marine engine. The DUI is a complete
ignition system in one simple unit. No external coils or ignition boxes are necessary! Just one
12 volt hot wire hooked up to the DUI is all you need to get your marine engine running with more
power and torque. Improved performance comes from our 50,000 volt coil and high dwell Dyna-
Module. The coil allows spark plug gaps to be opened up to .055". The increased dwell within
the module makes the coil produce a longer duration spark. The combination of the two will
provide the most complete burn of the fuel mixture possible. Performance is also enhanced from
the super smooth advance curve tuned into the DUI. A special weight and spring assembly is
hand fitted and dialed-in using a distributor machine for a precise timing curve that will match the
specifications of your engine and boat. The custom tuned advance provides instant throttle
response and maximum power throughout the rpm range. Our Marine DUI is available in two
versions. The Marine 7000 version is designed for stock to mildly modified engines that will not
turn more than 7000 rpm's. The Marine 9000 version is built for high performance and racing
applications that turn up to 9000 rpm's. Both versions are blueprinted and precision built by
polishing, lubing and setting exact tolerances as they are assembled. The Marine DUI also has
flame arrestors installed which distinguishes it from our automotive DUI's. All distributors come
complete, including the brass terminal cap and rotor and stock gear. No matter what your boat
is used for, cruising, pulling skiers or all out racing, we have a DUI to fit your needs.