Impeller Question with Rabbit Ears On

[1985 Century Mustang]

When the rabbit ears are on and the engine is running and the temps are normal, does this mean my outdrive impeller is also functioning?

 

[Lou C]

Not necessarily
The muffs force water in under pressure
The true test is if the impeller can move water when the boat is in the water.
On mine I usually run the impeller 3 seasons or so. With a 160 stat my running temps are about 160-170.

 

[1985 Century Mustang]

Not necessarily
The muffs force water in under pressure
The true test is if the impeller can move water when the boat is in the water.
On mine I usually run the impeller 3 seasons or so. With a 160 stat my running temps are about 160-170.

Thanks, I'll be testing it out shortly. I replaced the water impeller last year, hopefully it held up.

 

[JASinIL2006]

Unless you ran the engine without a supply of water, the impeller should still be good. In freshwater, you should be able to get at least three or four years out of one.

 

[Scott06]

Thanks, I'll be testing it out shortly. I replaced the water impeller last year, hopefully it held up.

It should be fine unless it was a cheap aftermarket one. Stay with oem impellers . In fresh water I get at least six out of mine .

 

[nola mike]

It should be fine unless it was a cheap aftermarket one. Stay with oem impellers . In fresh water I get at least six out of mine .

Ha ha, like those tootsie roll commercials, none of my outdrives has ever stayed together long enough to have a worn impeller, and I replace them whenever I crack open the drive.

 

[Lou C]

Impeller life seems more a function of the water you’re in, not salt or fresh but shallow/Sandy bottom vs deep water and also care when loading on & off trailer that you don’t tilt too high. I think the longest I went was 5 years. Cobra impeller very easy to do; don’t have to split the drive…it lives under a cover at the end of the upper gear housing….

 

[1985 Century Mustang]

I took her out today and the temps stayed in the 120-130 range, the impeller seems to be working fine. The water temps here in NY are about 76 degrees.

 

[crazy charlie]

I took her out today and the temps stayed in the 120-130 range, the impeller seems to be working fine. The water temps here in NY are about 76 degrees.

I believe 145-160 is where you want to be. Charlie

 

[Lou C]

What temp is your stat? Should be close to that

 

[1985 Century Mustang]

What temp is your stat? Should be close to that

 

[nola mike]

No he means what temperature thermostat do you have installed (opening temp)?

 

[flashback]

I think he meant the thermostat rated temp, if you're stat is rated for 140 then that is the temp it opens.don't matter what the gauge said.

 

[Lou C]

160* stat on my 4.3, runs right at 160, might rise to 170 after coming off plane.
Merc can have a 140 (older models) or a 160 (newer models), I'm guessing you have a 140, so that's about the temp you should run at. On your gauge, it should be on the hash mark between 100 and 175, that's probably about 140*

 

[Scott06]

Agreed 140 stat got me 150-155, 160 stat steady 170