Injection of water through pump

« **on:** September 01, 2015, 09:43:24 PM »

So I understand that water is injected through the motor via the pump while it's in the water..but when the boat is on the trailer at home and the garden hose is pumping wafer through the engine, does that water also get injected back through the pump? I'm just thinking, "how does the pump get lubricated during on the trailer test n tune?"..besides the oil that's in the pump..doesn't the pump use water to cool as well?..

« **Reply #1 on:** September 01, 2015, 10:02:41 PM »

I understand your thought.

That being said, where that water would go backward into the pump will be thrown away from the wear ring with centrifugal force. And on the wrong side of the impeller to do anything at all for the pump packing.

GT

« **Reply #2 on:** September 01, 2015, 10:24:45 PM »

http://www.socaljetboats.com/engine-mechanical-electrical/running-off-garden-hose/

The link covers a few of the many ways people run a jet boat on the trailer.

The oil or grease in the bowl only lubes the bearings on the back of the shaft.

In most of the threads I've read, the main reason for not running a jet while dry is because it would mess up the wear-ring.
My understanding,(which isn't much), is that water helps lube the wear ring and packing glands as well.

Some guys run a hose in the intake of the boat and another hose to the engine. some people have a tee that runs to the pump and the engine.
Some guys don't know or care and run it dry.

Some disconnect the driveshaft if they have access to it.

« **Reply #3 on:** September 01, 2015, 10:28:59 PM »

Quote from: TrollerDave on September 01, 2015, 10:24:45 PM

http://www.socaljetboats.com/engine-mechanical-electrical/running-off-garden-hose/

The link covers a few of the many ways people run a jet boat on the trailer.

The oil or grease in the bowl only lubes the bearings on the back of the shaft.

In most of the threads I've read, the main reason for not running a jet while dry is because it would mess up the wear-ring.
My understanding,(which isn't much), is that water helps lube the wear ring and packing glands as well.

Some guys run a hose in the intake of the boat and another hose to the engine. some people have a tee that runs to the pump and the engine.
Some guys don't know or care and run it dry.

Some disconnect the driveshaft if they have access to it.

I literally use WD40. I just spray it down before starting it. Just don't run it long.

GT

« **Reply #4 on:** September 01, 2015, 10:34:57 PM »

Quote from: GT Jets on September 01, 2015, 10:28:59 PM

I literally use WD40. I just spray it down before starting it. Just don't run it long.

GT

Do you just spray up through the intake?

« **Reply #5 on:** September 01, 2015, 10:35:57 PM »

I was told running it out of water is a no no. For what my pump is it will not be ran out of water. It takes me maybe 10-15 minutes to unbolt the pump from the engine, easy enough for me.

Garrett

« **Reply #6 on:** September 01, 2015, 10:38:12 PM »

Quote from: TrollerDave on September 01, 2015, 10:34:57 PM

Do you just spray up through the intake?

Pretty much. And I love the new WD40 cans.

I shoot it up and around the wear ring and back off the packing land bolts.

GT

riverrat4life

Injection of water through pump

GT Jets

Re: Injection of water through pump

TrollerDave

Re: Injection of water through pump

GT Jets

Re: Injection of water through pump

TrollerDave

Re: Injection of water through pump

SSpeeDEMONSS

Re: Injection of water through pump

GT Jets

Re: Injection of water through pump