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Impeller

 
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Jeff
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Joined: 13 Jan 2003
Posts: 678
City: Long Island

PostPosted: Jan 18, 2003 7:08 pm    Post subject: Impeller Reply with quote

if never owned an inboard before so this will seem like a stupid question to most of you but whats an impeller do
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jedsterr
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Joined: 13 Jan 2003
Posts: 291
City: Star Idaho

PostPosted: Jan 18, 2003 7:26 pm    Post subject: Reply with quote

It is a posative displacement, flexible impeller pump which is driven by the belts on the front of most inboard motors.

It sucks water from the lake (intake scupper through the bottom of the boat) then pumps it through the rest of the motor for cooling.

The lake water usually passes through a filter & the tranny cooler before reaching the impeller where it's pumped to the thermostat & then on to the motor or to the exhaust for cooling.

The rubber veins on the impeller are subject to wear & should be replaced on an anual or bianual basis, as their failure can fry your motor.

-Jed
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Jeff
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PostPosted: Jan 18, 2003 7:29 pm    Post subject: Reply with quote

thanx, i guess its kinda like the water pump on an outboard
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jedsterr
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City: Star Idaho

PostPosted: Jan 18, 2003 7:33 pm    Post subject: Reply with quote

yeah, it's it own unit though. It mounted on a bracket & belt driven, like the alternator, or an AC or smog pump on a car. On many you can change the impeller (inside) without even removing the housing from the bracket. The replacement impellers are fairly inexpensive, 20-35 dollars.

-j
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bluefish86
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Joined: 12 Jan 2003
Posts: 1539
City: Ottawa

PostPosted: Jan 18, 2003 8:03 pm    Post subject: Reply with quote

Jeff, there are impellers on I/Os and outboards too you know...
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