Running with *NO* Impellar?

[jsz]

If you can hook the hose to a T fitting inline with the water pick up, and have a valve to close the inlet, so you do not lose any flow, you will be fine. As you are forcing the water into the engine faster then if then the raw water pump could at those RPM’s.

If I understand you correctly, it sounds like that would be the same as hooking up a pro-flush or fake-a-lake. Either way water is being forced through the motor.

I think it will work. I think a hose would provide enough GPM and pressure to keep it cool. One way to find out would be to remove the impellar, hook up the pro-flush and see how much water flows out the exhaust with the motor OFF.

[dogbert]

Seems like a lot of work to remove the impeller just to run a hose through it.

[zad0030]

WHAT!!! Please tell me how ANY water will make it through with no impellar or pressure from a hose.

What im saying is launching... upon launching there is no water being pumped though the engine.

If I understand you correctly, it sounds like that would be the same as hooking up a pro-flush or fake-a-lake. Either way water is being forced through the motor.

I think it will work. I think a hose would provide enough GPM and pressure to keep it cool. One way to find out would be to remove the impellar, hook up the pro-flush and see how much water flows out the exhaust with the motor OFF.

No no water will come out of the engine for two reasons.
1) Thermostat is closed
2) If there is no impeller there is nothing to move the water thoughout the engine, so how will water come out if its not being circulated. Oh wait you are "pressurizing" it with the fake lake right? Well then how come when someones impeller breaks and the engine overheats, driving, making the water "pressurized" wont cool the engine down?

[spooner]

The impeller only supplys water to the engine, the circulating pump moves it around. Twice I have had my impeller fail completey(no fins) due to debris stuck in the sea strainer. After cooling the engine with a fat sac pump(engine off) I was able to get to the trailer to change th impellar both times by keeping the boat on plane. The scupper design of the sea strainer forced water into the engine at that speed keeping it cool.