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View Full Version : Safe to just replace this impeller?


cal2vin
06-21-2013, 01:37 AM
I pulled this out of my boat today after the temp alarm went off.

http://img.tapatalk.com/d/13/06/21/ata5ehaq.jpg


Do you guys think I'm safe to just put a new one in or do I need to find that rubber. I'm assuming it was gradual. And I've put 350 hours on the boat (shoulda changed it, I know), and it always ran cool until today. The thing I did different today was idled around the dock for 10 min or so with out ever revving the engine past idling in gear. Which is unusual for me. I usually take off and make a quick circle first thing. That 10 min of low rpm may not have made enough suction to get water and ripped it to shreds?? I just don't know

thatsmrmastercraft
06-21-2013, 01:41 AM
I would take the time to look for shrapnel. No harm done if you don't find any, but overheating is never good.

cal2vin
06-21-2013, 01:58 AM
I mean I felt around in the impeller housing but where would I start looking past that. 2008 X2. It looks like I'd have to take a bunch of stuff apart

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thatsmrmastercraft
06-21-2013, 02:02 AM
Afraid I can't help on the X2. Someone is bound to be along in the morning with some thoughts. Good luck.

PureInboards
06-21-2013, 02:05 AM
Should be all sitting in the trans cooler, follow pipe from pump and it is the next hose clamp up by the alternator, you should check this regular as it traps debris that float on the waters surface and is sucked into the cooling system

cal2vin
06-21-2013, 02:17 AM
That sounds easy enough. And it means I don't have to take the new impeller back out to check it. So thats a plus

etduc
06-21-2013, 09:58 AM
Disconnect every hose AFTER the pump, and inspect. Also, t-stat(s). The impeller, gradually degrades...plumping debris, until total failure.

Most of the debris, ends up in exhaust manifolds, as it is pretty big. On my boat, it clogged at the water inlet, to both manifolds.

JimN
06-21-2013, 10:24 AM
I pulled this out of my boat today after the temp alarm went off.

http://img.tapatalk.com/d/13/06/21/ata5ehaq.jpg


Do you guys think I'm safe to just put a new one in or do I need to find that rubber. I'm assuming it was gradual. And I've put 350 hours on the boat (shoulda changed it, I know), and it always ran cool until today. The thing I did different today was idled around the dock for 10 min or so with out ever revving the engine past idling in gear. Which is unusual for me. I usually take off and make a quick circle first thing. That 10 min of low rpm may not have made enough suction to get water and ripped it to shreds?? I just don't know

That should have been replaced about 250 hours ago.

It's not 10 minutes of low RPM that caused this, it's sitting in the pump with the vanes bent by their normal position and the force of the water. Yes- look for the missing pieces.

mikeg205
06-21-2013, 12:01 PM
Finding all that crap is going to take some time... ugh

JimN
06-21-2013, 12:12 PM
Finding all that crap is going to take some time... ugh

Depends- is your oil cooler on the front of the engine, above the raw water cooler? If it is, the chunks will be in there.

bigmac
06-21-2013, 04:49 PM
The transmission cooler is between your water pump and your engine and it has a strainer.

http://mccollister.info/cooler.jpg

Any chunks that made it through the transmission cooler are likely to be smaller than the holes in the strainer. Maybe such a piece could get hung up in your thermostat.

Daubrey
06-21-2013, 07:33 PM
Where will all the debris be on the older LT1 engines? Exhaust Manifolds?

cal2vin
06-23-2013, 04:09 AM
Found a good bit of chunks. This was at the first clamp after the impeller housing. I could feel a metal guard or grate of some sort. Running great now. http://img.tapatalk.com/d/13/06/23/ezumana5.jpg

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thatsmrmastercraft
06-23-2013, 09:27 AM
Found a good bit of chunks. This was at the first clamp after the impeller housing. I could feel a metal guard or grate of some sort. Running great now. http://img.tapatalk.com/d/13/06/23/ezumana5.jpg

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Wow! Good thing you went looking for debris. That much crap would have been an issue.

bigmac
06-23-2013, 09:39 AM
I could feel a metal guard or grate of some sort.

http://ssequine.net/cooler2.jpg