Originally Posted by Red 08 Xstar
This is absolute misinformation. I start my boat all the time out of the water. When I winterize it at the end of the season the impeller is fine. I'm on the same impeller for 4 years now and it still looks like new.
It may look like new but I guarantee the vanes don't push back on the housing like they need to, in order to provide sufficient water flow rate. Having seen and replaced numbers well into the hundreds of impellers that were missing vanes, I'd rather be safe than cheap.
Look at it this way- what's the cost of an impeller and gasket vs the cost to repair the damage from one that lets you down when you least expect and least want it to?