WTF!!!!!

[haknslash]

Is this proven? I just don't see how it can be true. I have taken my boat out for a short trips, mostly in no-wake zones and the plugs are still filled to do the door with water. There is no way that much water splashed on top of the deck.

I have watched my rear deck a bunch of times specifically looking out if water would make it up that high and it never has under normal use. Even trying to make it happen it doesn't seem to go that high and just washes out of the bottom as quickly as it rolled in once the boat settles coming off plane. I think water gets above the cleanout tube from the plug. I haven't cared to really break down all the scenarios for why or how it may happen (WOT vs normal cruising, hard turns vs casual turns, etc) but I do not think its from the deck. My SeaDek is usually always dry on the upper platform while the bottom one is always soaked when coming off plane. Only time I could see getting water up to the top is if you're trying a sub move or have a bunch of ballast and sinking the lower platform into the water.

 

[bronze_10]

Well hell... Someone open the hatch and hold down the buttons and hit the gas and lets see where it comes from!

 

[John Mcpartland]

Was this a new boat purchase... Or was it used?

Brand new

 

[bronze_10]

Very odd tjat it would be that far out if spec as a new boat... Very interesting. .

 

[haknslash]

Well hell... Someone open the hatch and hold down the buttons and hit tje gas and less see where I comes from!

 

[John Mcpartland]

Adding to the previous response running sand through the pumps.

We did get stuck on a sand bar last summer

 

[Eric Ballard]

It is also pushed up through the clean out drain....(drain in reverse). But yes....very rare NOT to see water on top of the plugs after running. It also doesn't need to get on top of the deck....is just goes under it. But someone on here posted a while back that he confirmed water does come up through the drain. So both are valid ways to get water in there.

Bottom line...if you have no water on top of the plugs after running for a while and pulling the boat out....it is draining through the plug...which suggests it is leaking water through the seal. A little leak is likely ok....always quickly draining....not good.

poor water on top of your plugs and see if it drains out past the seal. out of the water of course.

 

[John Mcpartland]

poor water on top of your plugs and see if it drains out past the seal. out of the water of course.

It does not, every time i get home i empty them

 

[swatski]

About 7900

That seems very high and indicates to me that you are hitting rev limiter (because the impellers are "slipping" - like wheels in mud). Which is consistent with cavitation.

Either the OD is too large or there is missing sealant between pump segments and/or transom plate - and the pump is sucking air.

Good news is - that is fixable.

--

 

[John Mcpartland]

If it was sand, would it be the impellers or the impeller housing?

 

[swatski]

If it was sand, would it be the impellers or the impeller housing?

Usually the impellers are the weak link - at least the OEM in 1.8s with their long blades.

They are not expensive, about $150 a piece, surprisingly. So - I would strongly advice against refurbishing those, does not make any sense IMO.

--

 

[John Mcpartland]

Usually the impellers are the weak link - at least the OEM in 1.8s with their long blades.

They are not expensive, about $150 a piece, surprisingly. So - I would strongly advice against refurbishing those, does not make any sense IMO.

--

I was thinking to try 1 first, the housings or the impellers. I would rather do the impellers as 2 impellers are the price of 1 housing

 

[John Mcpartland]

For the impellers to be out of spec do they get bent?

 

[swatski]

For the impellers to be out of spec do they get bent?

Yes it doesn't take much to bend those on the trailing edges - and blowing through some gravel/sand might do just that.
Not saying this is what happened to you, but I think starting with one new impeller - buy new for example from Babbitt's - would be a great start. While your pumps are out, I would check for any missing sealant in the tunnel.

--

 

[swatski]

You will need a big vice, a box wrench and the impeller tool for about $10-15.

--

 

[John Mcpartland]

Yes it doesn't take much to bend those on the trailing edges - and blowing through some gravel/sand might do just that.
Not saying this is what happened to you, but I think starting with one new impeller - buy new for example from Babbitt's - would be a great start. While your pumps are out, I would check for any missing sealant in the tunnel.

--

Are the oem impellers stainless steel? Or would it be better to get solas?

 

[Bruce]

Oem is stainless.

@swatski did extensive testing and found the factory impellers to be best.

 

[John Mcpartland]

Oem is stainless.

@swatski did extensive testing and found the factory impellers to be best.

Ok. Thanks
Thought they might be aluminum

 

[swatski]

Are the oem impellers stainless steel? Or would it be better to get solas?

I would stay away from Solas, the OEM impellers are definitely better in 1.8 boats for great hole shot.
Some batches of Solas also desintegrate, which is not good. Has been posted here and on greenhulk.
Solas are nice and shiny, but that has nothing to do with performance, lol. The OEM look scruffy, but really work best. They can be refurbished with a mirror finish but it does nothing to performance. I have consistently found that factory new OEM impellers are best performers.

There are instances where re-pitching is advised, such as for high altitude or if you want to get into high RPM after a ECU reflash, but I doubt you would benefit from any of that right now.

--

 

[John Mcpartland]

I would stay away from Solas, the OEM impellers are definitely better in 1.8 boats for great hole shot.
Some batches of Solas also desintegrate, which is not good. Has been posted here and on greenhulk.
Solas are nice and shiny, but that has nothing to do with performance, lol. The OEM look scruffy, but really work best. They can be refurbished with a mirror finish but it does nothing to performance. I have consistently found that factory new OEM impellers are best performers.

There are instances where re-pitching is advised, such as for high altitude or if you want to get into high RPM after a reflash, but I doubt you would benefit from any of that right now.

--

Thanks