Globe Composite Solutions 6 Blade Globe Impeller 025

Global impellers are sold under “Run-Dry®” marketing pitch.Think about it: why would you want to run your engine without cooling for 15 minutes???!!!These impellers have very poor self-priming ability and wear off much faster than OEM.Here is my story:I’ve purchased an impeller sold by Globe Marine Products on Amazon on August 21, 2017 and installed In March 2018.The engine was commissioned in May 2018 at the beginning of summer sailing season.During summer sailing season I’ve experienced numerous problems with engineraw water pump self-priming after moving under sail with engine off.There was no water coming out of exhaust.Raw water pump is located bellow water line and no hoses, fittings or strainers arereaching above water line when the boat is leveled.In order to make raw water pump work, I had to loose pump cover plate to let air out,Sometimes it had to be done several times.I never had this kind of problem while using OEM impeller: 15 years of ownership with extensive cruisingBetween NY and Miami, Bermuda, Bahamas and Caribbean.Finally, while sailing South in October 2018, I was not able to prime the pump at all.A couple of miles offshore, I replaced Globe Marine impeller with used OEM impeller and everything worked fine!Has been sailing in various conditions for two weeks since and had no problems at all.If you examine attached pictures, you’ll see how badly Globe Marine impeller tips are wornComparing to OEM impeller with over 3 times as much usage.Also, I observed that the engine was running hotter above 2100 RPM (Volvo Penta MD17D, Max RPM 3000)Not exactly overheating, but closer to red than before)I suspect that because Globe Marine impeller blades are softer, they don’t seal as well as OEM,Which can contribute to weaker raw water flow and, therefore, higher engine temperatures.If you still want to try this product, watch exhaust water obsessively and monitor engine temperature.Make sure that you have time, sea room and ability to purge the pump or replace impeller when you start the engine.