Water pump is this normal

[papou]

is it normal for the water impeller to keep it`s shape after removed from pump this is my second one this year i have different temp reading at different rpm`s on idle the temp would go past 180 my thermostat is a 160
my first impeller lasted 30 hours all fins were there it looked a little worse would not pump water no more the one in the pic has 40 hours and it would no longer pump on idle.

strainer,trans cooler ,hoses are all clear and clean.

Thanks

[lewisb13]

Perfectly normal. My boat runs at 175ish at all times, unless Im on the throttle and realllllllly circulating a lot of water. Not sure why yours isnt pumping, did a new impeller fix the problem? I dont feel like you are having impeller issues. Maybe the thermostat is stuck?

[papou]

Perfectly normal. My boat runs at 175ish at all times, unless Im on the throttle and realllllllly circulating a lot of water. Not sure why yours isnt pumping, did a new impeller fix the problem? I dont feel like you are having impeller issues. Maybe the thermostat is stuck?

at first i changed the thermostat it did`t fix the problem it still overheated i pulled out the impeller and i was worse then the pic put a new one problem solved 40 hours later this one won`t pump on idle.

[deafgoose]

Damn. I maintain 160 degrees all the time and I just finished my 3rd season on the original impeller.

I guess it depends on the water quality. Our river is mostly rocks so there is no sand that would damage the impeller.

[DOCDRS]

I noticed it a volvo penta impeller........try a johnson 812b impeller...maybe they are a higher quality?

[papou]

I noticed it a volvo penta impeller........try a johnson 812b impeller...maybe they are a higher quality?

my first one was a johnson 812 i tried the volvo thinking it might be a better quality

[cab13367]

is it normal for the water impeller to keep it`s shape after removed from pump

Just commenting on your photo of the impeller with the curved vanes. I just pulled my impeller and all the vanes immediately straightened out and looks like new - none of them are curved. So I think the fact that yours are permanently cuved means that it is not drawing enough water thru your intake.

I just completed my second season on this impeller. At the end of the season, I always take it out, coat it with vaseline, and put in a ziplock bag over the winter per the owner's manual so I think that helps keep it flexible and the vanes straight.

I also never ever start my boat unless it's in the water or I have the fake a lake attached.