Well -------------- Sam was absolutly correct in sayingand sorry for the delay in responding Sam with the answer. Tim Kurcz built this wild 45 OMC mod with the addition of a Cosworth duel overhead cam cylinder head cut in half. It was fabed up over several years in Bud Parkers shop when Tim took the project on. Tim said the compression of this high breed two stroke was a whopping 235 PSI. It requird timming the cams and the roll over point perfectly and putting 24 volts to the starter to get it to pop off. You had one shot to get it to take. Tim said he had problems with the cylinder head getting steam pockets traped (due to poor casting design) causing hot spots that would cause the Alum. combustion chamber to sag causing poor valve seal and lose of compression. The exhaust was dumped out all four valves per cylinder (once, two intake/two exhaust) and the block was re-sleeved to use intake and exhaust ports as intake ports only. Twin two barrel carbs. feed the juice. To see this engine up close is to realize the hundreds of hours required to make it work. The engine was to be raced at Dayton Ohio record runs but after much discussion about it amoung the tech. commitee it was not allowed to run due to the boat sporting a remote rudder. Tim said this approach of engine design is similar to todays two stroke diesel engines. It just happens to run on gasoline. This and several other one off mod engines of Tims will be on display at The 2009 AOMCI fall meet at Mark Suters.Its the Frankenstein of Formula E ... the Kurcz 45 OMC twin Cosworth overhead exhaust valved 2 stroke. Its other unique feature was fixed motor with rudder steering as used on inboards
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