We recently replaced our impeller after replacing the seals and water tube on the lower unit. We have a OMC Cobra Outdrive. Engine is running at proper temperature ranges and we have plenty of water pumping up from lake and flow is good coming in to the thermostat. The impellers offered for this outdrive don't seem to last very long.
The housing for the cobra is kind of weird, in that it is oval and the impeller spins on a metal insert that is not particularly smooth. When the engine stops the impeller is left compressed on one side. Seems they deform earlier than if the housing were round. Any suggestions would be appreciated.
The housing for the cobra is kind of weird, in that it is oval and the impeller spins on a metal insert that is not particularly smooth. When the engine stops the impeller is left compressed on one side. Seems they deform earlier than if the housing were round. Any suggestions would be appreciated.