These impeller vanes have eroded, probably due to long coolant change intervals. Not only do the steel blades CORrode from old coolant not preventing it; they also Erode due to microbubbles (cavitation) created due to the lowered boiling point.
http://www.fourdoorbronco.com/board/showthread.php?t=5230
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![23-waterpump.jpg These impeller vanes have eroded, probably due to long coolant change intervals. Not only do the steel blades CORrode from old coolant not preventing it; they also Erode due to microbubbles (cavitation) created due to the lowered boiling point.
http://www.fourdoorbronco.com/board/showthread.php?t=5230
[url=https://www.supermotors.net/registry/media/1142745][img]https://www.supermotors.net/getfile/1142745/thumbnail/coolantneglect.jpg[/img][/url] . [url=https://www.supermotors.net/vehicles/registry/media/1163985][img]https://www.supermotors.net/getfile/1163985/thumbnail/20210103_150315.jpg[/img][/url]](https://www.supermotors.net/getfile/173189/fullsize/23-waterpump.jpg)