On Sun, 16 Sep 2007 21:26:50 -0700, JR North
wrote:

John H. wrote:

On Sat, 15 Sep 2007 18:10:07 -0400, trainfan1
wrote:


Chad wrote:

How often do you change your raw water impellers for your motors?



1973 Evinrude 115: Last changed in 1992.

1981 Evinrude 115: Last changed prior to my purchase in 1997.

1972 Johnson 6: Never changed since new. This one gets the most use.

1973 Correct Craft Ford inboard(~45 hrs./yr): Last changed before my
purchase in 1998.

All used in a sandy bottom shallow lake.

Courage?

lunacy.

The only time I've ever changed an impeller was when I noticed that
the water pressure was a little low on one FICHT I had on the original
Contender. It must have sucked up a piece of sea weed or something.

Changing one every two years is over kill in my opinion.

Other than that, I can't think of a time I've ever changed one other
than an older Merc that I rebuilt one time.

Short Wave Sportfishing wrote:
On Sun, 16 Sep 2007 21:26:50 -0700, JR North
wrote:

John H. wrote:

On Sat, 15 Sep 2007 18:10:07 -0400, trainfan1
wrote:


Chad wrote:

How often do you change your raw water impellers for your motors?


1973 Evinrude 115: Last changed in 1992.

1981 Evinrude 115: Last changed prior to my purchase in 1997.

1972 Johnson 6: Never changed since new. This one gets the most use.

1973 Correct Craft Ford inboard(~45 hrs./yr): Last changed before my
purchase in 1998.

All used in a sandy bottom shallow lake.
Courage?
lunacy.

The only time I've ever changed an impeller was when I noticed that
the water pressure was a little low on one FICHT I had on the original
Contender. It must have sucked up a piece of sea weed or something.

Changing one every two years is over kill in my opinion.

Other than that, I can't think of a time I've ever changed one other
than an older Merc that I rebuilt one time.

Factory OEM parts last a lot longer too. There are outboards on out
lake from the 50's & 60's that have never had an impeller change-out.

Rob

JimH wrote:
"trainfan1" wrote in message
et...
Short Wave Sportfishing wrote:
On Sun, 16 Sep 2007 21:26:50 -0700, JR North
wrote:

John H. wrote:

On Sat, 15 Sep 2007 18:10:07 -0400, trainfan1
wrote:


Chad wrote:

How often do you change your raw water impellers for your motors?

1973 Evinrude 115: Last changed in 1992.

1981 Evinrude 115: Last changed prior to my purchase in 1997.

1972 Johnson 6: Never changed since new. This one gets the most use.

1973 Correct Craft Ford inboard(~45 hrs./yr): Last changed before my
purchase in 1998.

All used in a sandy bottom shallow lake.
Courage?
lunacy.
The only time I've ever changed an impeller was when I noticed that
the water pressure was a little low on one FICHT I had on the original
Contender. It must have sucked up a piece of sea weed or something.

Changing one every two years is over kill in my opinion.

Other than that, I can't think of a time I've ever changed one other
than an older Merc that I rebuilt one time.
Factory OEM parts last a lot longer too. There are outboards on out lake
from the 50's & 60's that have never had an impeller change-out.

Rob

Until I purchased it in 2005 my 1997 Glastron spent it's entire life on an
inland lake and trailered. Starting in 2005 it's new life was on Lake Erie
with a lot of time anchored near beaches in sandy water. I have to back
over a sand bar to get near the beach, kicking up sand while running in
reverse.

The impellor failed last year causing some major damage to the engine due to
the engine overheating. It also caused me to be towed in twice last year.

I will continue to change mine out every two years. It is cheap insurance
for me.




Is this something you do yourself or do you have a mechanic do it? I've
never owned an I/O, and therefore, obviously, know nothing other than
the generalities, about I/O innards.

In the good old days, my father let me change the impellers on the lower
units of customer outboards, but in those days it was a simple,
straightforward mechanical operation. These days, I wouldn't attempt
"mechanical" work on a modern, high-tech outboard beyond fluid replacement.

On Mon, 17 Sep 2007 08:23:50 -0400, "JimH" ask wrote:

I will continue to change mine out every two years. It is cheap insurance
for me.

Nothing wrong with that if you use the motor a lot, overkill for
others. Operating time is a better guage, probably somewhere around
300 to 400 hours unless you run a lot in shallow water.

On Mon, 17 Sep 2007 08:23:50 -0400, "JimH" ask wrote:


"trainfan1" wrote in message
news:WbOdnZp3bqb28XPbnZ2dnUVZ_u7inZ2d@usadatanet. net...
Short Wave Sportfishing wrote:
On Sun, 16 Sep 2007 21:26:50 -0700, JR North
wrote:

John H. wrote:

On Sat, 15 Sep 2007 18:10:07 -0400, trainfan1
wrote:


Chad wrote:

How often do you change your raw water impellers for your motors?

1973 Evinrude 115: Last changed in 1992.

1981 Evinrude 115: Last changed prior to my purchase in 1997.

1972 Johnson 6: Never changed since new. This one gets the most use.

1973 Correct Craft Ford inboard(~45 hrs./yr): Last changed before my
purchase in 1998.

All used in a sandy bottom shallow lake.
Courage?
lunacy.

The only time I've ever changed an impeller was when I noticed that
the water pressure was a little low on one FICHT I had on the original
Contender. It must have sucked up a piece of sea weed or something.

Changing one every two years is over kill in my opinion.

Other than that, I can't think of a time I've ever changed one other
than an older Merc that I rebuilt one time.

Factory OEM parts last a lot longer too. There are outboards on out lake
from the 50's & 60's that have never had an impeller change-out.

Rob

Until I purchased it in 2005 my 1997 Glastron spent it's entire life on an
inland lake and trailered. Starting in 2005 it's new life was on Lake Erie
with a lot of time anchored near beaches in sandy water. I have to back
over a sand bar to get near the beach, kicking up sand while running in
reverse.

The impellor failed last year causing some major damage to the engine due to
the engine overheating. It also caused me to be towed in twice last year.

I will continue to change mine out every two years. It is cheap insurance
for me.

Based on your experience, I don't blame you.

On Sep 17, 8:39 am, HK wrote:
JimH wrote:
"trainfan1" wrote in message
news:WbOdnZp3bqb28XPbnZ2dnUVZ_u7inZ2d@usadatanet. net...
Short Wave Sportfishing wrote:
On Sun, 16 Sep 2007 21:26:50 -0700, JR North
wrote:

John H. wrote:

On Sat, 15 Sep 2007 18:10:07 -0400, trainfan1
wrote:

Chad wrote:

How often do you change your raw water impellers for your motors?

1973 Evinrude 115: Last changed in 1992.

1981 Evinrude 115: Last changed prior to my purchase in 1997.

1972 Johnson 6: Never changed since new. This one gets the most use.

1973 Correct Craft Ford inboard(~45 hrs./yr): Last changed before my
purchase in 1998.

All used in a sandy bottom shallow lake.
Courage?
lunacy.
The only time I've ever changed an impeller was when I noticed that
the water pressure was a little low on one FICHT I had on the original
Contender. It must have sucked up a piece of sea weed or something.

Changing one every two years is over kill in my opinion.

Other than that, I can't think of a time I've ever changed one other
than an older Merc that I rebuilt one time.
Factory OEM parts last a lot longer too. There are outboards on out lake
from the 50's & 60's that have never had an impeller change-out.

Rob

Until I purchased it in 2005 my 1997 Glastron spent it's entire life on an
inland lake and trailered. Starting in 2005 it's new life was on Lake Erie
with a lot of time anchored near beaches in sandy water. I have to back
over a sand bar to get near the beach, kicking up sand while running in
reverse.

The impellor failed last year causing some major damage to the engine due to
the engine overheating. It also caused me to be towed in twice last year.

I will continue to change mine out every two years. It is cheap insurance
for me.

Is this something you do yourself or do you have a mechanic do it? I've
never owned an I/O, and therefore, obviously, know nothing other than
the generalities, about I/O innards.

In the good old days, my father let me change the impellers on the lower
units of customer outboards, but in those days it was a simple,
straightforward mechanical operation. These days, I wouldn't attempt
"mechanical" work on a modern, high-tech outboard beyond fluid replacement.- Hide quoted text -

- Show quoted text -

Similar to a big outboard.

wrote:
On Mon, 17 Sep 2007 10:43:50 -0400, Wayne.B
wrote:

Nothing wrong with that if you use the motor a lot, overkill for
others. Operating time is a better guage, probably somewhere around
300 to 400 hours unless you run a lot in shallow water.


Install a water pressue gauge. They you get a real time indication of
impeller and water delivery system performance. You really can't tell
much from the "pee" stream. 3 PSI looks pretty much like 17 PSI. 3
will not provide enough water to cool your engine.
I bet one of the most over replaced item on an outboard is the
impeller. Bonita Boat Center (fat Cappy) tried to tell me I needed one
every 100 hours ... but they were the same ones who couldn't fix the
"known problem" on big foot mercs that caused overheating. They sold
me TWO impellers within the first 300 hours of running. I still have
the second one in my box of spare parts. The next time I swap out an
impeller that will be the one I use. It is pristine. I have 1700 hours
on the last one they installed. My water pressure is still doing fine
but I am going to swap the impeller the next time I get up on the
trailer. I will post pictures of the old one if you want.
BTW is there anything BUT shallow water? Not around here ;-)

Impellers for most I/O cost $25-$35 (I think outboards are even cheaper)
and are very easy to change out yourself. I run about 100 hrs a year,
so I put about 200 hrs on an impeller when I change it. I also anchor
in shallow water, with lots of sand and clay. Whenever I change my
impeller, it looks in great shape, but I figure it is the cheapest
insurance I can buy. It is also much easier to change an impeller when
you are winterizing your engine, than when it breaks while it is loaded
with people and gear. Or even worse when it breaks and you don't notice
the temp has risen until it has caused major damage.

On Mon, 17 Sep 2007 12:55:11 -0400, "Reginald P. Smithers III"
wrote:

Or even worse when it breaks and you don't notice
the temp has risen until it has caused major damage.

Score another advantage for ETEC.

They shut off at 194 degrees until it cools down, then go into SAFE
mode so you can get back.

ETEC RULES!!!!

Short Wave Sportfishing wrote:
On Mon, 17 Sep 2007 12:55:11 -0400, "Reginald P. Smithers III"
wrote:

Or even worse when it breaks and you don't notice
the temp has risen until it has caused major damage.

Score another advantage for ETEC.

They shut off at 194 degrees until it cools down, then go into SAFE
mode so you can get back.

ETEC RULES!!!!

Those high tech engines will never work.

But they do have one hell of a web site.

On Mon, 17 Sep 2007 12:58:49 -0400, "JimH" ask wrote:


wrote in message
.. .
On Mon, 17 Sep 2007 10:43:50 -0400, Wayne.B
wrote:

Nothing wrong with that if you use the motor a lot, overkill for
others. Operating time is a better guage, probably somewhere around
300 to 400 hours unless you run a lot in shallow water.


Install a water pressue gauge. They you get a real time indication of
impeller and water delivery system performance. You really can't tell
much from the "pee" stream. 3 PSI looks pretty much like 17 PSI. 3
will not provide enough water to cool your engine.
I bet one of the most over replaced item on an outboard is the
impeller. Bonita Boat Center (fat Cappy) tried to tell me I needed one
every 100 hours ... but they were the same ones who couldn't fix the
"known problem" on big foot mercs that caused overheating. They sold
me TWO impellers within the first 300 hours of running. I still have
the second one in my box of spare parts. The next time I swap out an
impeller that will be the one I use. It is pristine. I have 1700 hours
on the last one they installed. My water pressure is still doing fine
but I am going to swap the impeller the next time I get up on the
trailer. I will post pictures of the old one if you want.
BTW is there anything BUT shallow water? Not around here ;-)

You can run in clear shallow water with rock or clay bottom and never have a
problem. I run in shallow sandy water when heading to the beach, which is
normally every weekend during the summer.

YMMV, but I will stick to my schedule of every 2 years. Heck, I am even
changing out the boots this Fall.

Wearing suspenders and a belt? Maybe. But I want to make sure that what
happened to me last year will not happen to me again.


When you're in water shallow enough to kick up sand, why not jump out and
pull the boat in? You shouldn't have any problems standing in 2 feet of
water!