I've got a Bravo-I drive on a 23' boat.
Running it on muffs, last year I made a "newbie" boater mistake and managed to smoke up one impeller.. I was working on replacing the impeller anyway, but the lack of water managed to crack the raw water pump case.
Yes, I cleaned out the impeller bits. I caught it fairly quickly, only one broken "arm" of the impeller.
Just finished up some winter need-to-dos. I want to avoid this again, so I pulled left the new raw water pump disconnected and hooked up the muffs. Turned on the water pressure. No water to the pump.
I ended up messing with it for a while and put another clamp around the metal frame of the muffs. This creates more clamping force on the drive.
Doing it this way I get a steady stream of water to the pump.
Questions:
1) Is this normal? (having to clamp the muffs)
2) Correct operation if we're flowing water is to see water out the exhaust - regardless of being up to operating temp or not. I've got one of the Corsa systems - non-selectable, so I have both through hull and out drive exhaust.
I'm expecting to see water out the through-hull with the boat running.
Running it on muffs, last year I made a "newbie" boater mistake and managed to smoke up one impeller.. I was working on replacing the impeller anyway, but the lack of water managed to crack the raw water pump case.
Yes, I cleaned out the impeller bits. I caught it fairly quickly, only one broken "arm" of the impeller.
Just finished up some winter need-to-dos. I want to avoid this again, so I pulled left the new raw water pump disconnected and hooked up the muffs. Turned on the water pressure. No water to the pump.
I ended up messing with it for a while and put another clamp around the metal frame of the muffs. This creates more clamping force on the drive.
Doing it this way I get a steady stream of water to the pump.
Questions:
1) Is this normal? (having to clamp the muffs)
2) Correct operation if we're flowing water is to see water out the exhaust - regardless of being up to operating temp or not. I've got one of the Corsa systems - non-selectable, so I have both through hull and out drive exhaust.
I'm expecting to see water out the through-hull with the boat running.