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post #1 of 15 Old 09-15-2013 Thread Starter
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Sand through cooling salt water ok?

Hi,
We need to do beach landings and then leave the beach and go out through the surf to our anchored sail boat..

From what I understand the Honda 9.9 outboard motor does not have an impeller?

We need to launch the dinghy in the surf and start the engine. Then while it warms up and is idling we wait for the waves to give us a break in the surf. When there is a break in the surf we jump into the dinghy and take off avoiding a capsize.

The only problem is there usually is sand in the surf which is mixed all up in the salt water. This salt water and sand goes through the Honda 9.9 outboard cooling it while we wait for a break in the surf.

My quest is will this sand salt water mixture harm the Honda 9.9 outboard?

Currently in Paradise Village Marina in Puerto Vallarta Mexico.

Thanks,

Chip
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post #2 of 15 Old 09-15-2013
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Re: Sand through cooling salt water ok?

Chip,
I'm 99% sure the Honda has an impeller. I'm not sure which version you have, but look up your serial number and then go to:
Honda BF9.9 Outboard Engine - 9.9 hp boat motor specs and features

The sand will likely cause additional wear on the impeller, make sure the system is flushed when you're done.

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post #3 of 15 Old 09-16-2013
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Re: Sand through cooling salt water ok?

It is pretty normal stuff to beach and outboard powered boat and IMHP unless your using the motor to dredge a channel it should not be that much of a problem

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post #4 of 15 Old 09-16-2013
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Re: Sand through cooling salt water ok?

Quote:
Originally Posted by SanDiegoChip View Post
Hi,
We need to do beach landings and then leave the beach and go out through the surf to our anchored sail boat..

From what I understand the Honda 9.9 outboard motor does not have an impeller?

We need to launch the dinghy in the surf and start the engine. Then while it warms up and is idling we wait for the waves to give us a break in the surf. When there is a break in the surf we jump into the dinghy and take off avoiding a capsize.

The only problem is there usually is sand in the surf which is mixed all up in the salt water. This salt water and sand goes through the Honda 9.9 outboard cooling it while we wait for a break in the surf.

My quest is will this sand salt water mixture harm the Honda 9.9 outboard?

Currently in Paradise Village Marina in Puerto Vallarta Mexico.

Thanks,

Chip
Chip--

Any sand in the engine is undesirable. While we rarely have to make surf landings any longer, we did when living in SoCal and cruising there abouts and in Mexico. To make departing through surf an easier task, we used a technique that is really quite effective, but quite old and was even employed by beach landing craft during WWII. Simply carry a light sand anchor such as the smallest Fortress and deploy it over the transom a few yards beyond the surf line as you approach the beach. Snubbing the line over the stern sets the anchor, keeps the line away from the prop; and, helps keep the boat aligned bow on as one approaches the beach, thereby avoiding being knocked beam on as some dinghy's seem prone to being. When departing, one simply turns the boat around and, over the bow, hauls oneself out past the surf line keeping one's engine in the upright position until in relatively deeper water (and so not dragging in the sand) and then deploys the engine, and recovers the anchor over the bow. A small anchor and rode should be a part of one's dinghy equipment along with an emergency kit (against the possibility of engine failure) anyway and can be put to good use. ANd, the possibility of one's outboard ingesting sand is avoided.

FWIW...

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post #5 of 15 Old 09-16-2013
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Re: Sand through cooling salt water ok?

WW II landing craft had bronze impellers so they could handle sand. Getting abrasives inside any kind of engine can't be a great idea if it can be avoided although Honda must have designed these small engines with this kind of use in mind. Might be worth asking a Honda tech. about it.

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post #6 of 15 Old 09-16-2013
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Re: Sand through cooling salt water ok?

You will need to replace your impeller more often and possibly the impeller housing.

The former is inexpensive the latter not so.

I beach my dinghy on a regular basis and take care not to run it in sandy water. A high speed run at the beach, deploy anchor, stop and tilt engine, run on to beach.

NB be VERY CAREFUL OF LANDING IN ANY SURF. Getting side on and flipped can happen very easily. Ask me how I know this.
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post #7 of 15 Old 09-16-2013
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Re: Sand through cooling salt water ok?

Rowing or sailing in & out are out of the question?

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post #8 of 15 Old 09-16-2013
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Re: Sand through cooling salt water ok?

Quote:
Originally Posted by svHyLyte View Post
Chip--

Any sand in the engine is undesirable. While we rarely have to make surf landings any longer, we did when living in SoCal and cruising there abouts and in Mexico. To make departing through surf an easier task, we used a technique that is really quite effective, but quite old and was even employed by beach landing craft during WWII. Simply carry a light sand anchor such as the smallest Fortress and deploy it over the transom a few yards beyond the surf line as you approach the beach. Snubbing the line over the stern sets the anchor, keeps the line away from the prop; and, helps keep the boat aligned bow on as one approaches the beach, thereby avoiding being knocked beam on as some dinghy's seem prone to being. When departing, one simply turns the boat around and, over the bow, hauls oneself out past the surf line keeping one's engine in the upright position until in relatively deeper water (and so not dragging in the sand) and then deploys the engine, and recovers the anchor over the bow. A small anchor and rode should be a part of one's dinghy equipment along with an emergency kit (against the possibility of engine failure) anyway and can be put to good use. ANd, the possibility of one's outboard ingesting sand is avoided.

FWIW...
I could imagine that working well where the tide doesn't recede 150 metres. Counts me out.

I've never really worried too much about sand in the impeller. I just watch the little tell-tale squirter when the engine runs and if that looks healthy I just go on my way. If it starts spluttering or gets too light, change the impeller. That hasn't happened in a looooong time.


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post #9 of 15 Old 09-17-2013
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Re: Sand through cooling salt water ok?

When I was a kid my brother and I were always having overheating problems with our outboard, and every time it was repaired we were told by the mechanic to stay out of the shallow sandy beaches because we were clogging up the cooling passages with sand. To this day I have always avoided running my outboard in sandy water.

Just sayin'...

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post #10 of 15 Old 09-18-2013
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Re: Sand through cooling salt water ok?

Take a vertical shaft Honda lawn mower air cooled, and mount it on a surplus ob leg. voila, a designated mud jugger.
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