Blower Motor Assistance 2006 SANTE 210

[196Mike]

Recently purchased a 2006 SANTE 210 and doing some repairs to the blowers and need some help. One blower motor is a 4" mounted on the transom towards the port side, and the other is a 3" connected to the port side vent. Here is what I need help with and pictures, if possible, as the vent tubing has disintegrated as well.

1)The best I can tell is the 4" rear blower removes the air out of the engine compartment and blows it out the rear of the port side air vent. It is connected with 4" vent tubing that runs under the rear rail and connects to the back of the port vent box. Just wanting to confirm this is the correct set up for the 4" blower.

2) The 3" blower is mounted directly to the front of the port air vent and brings fresh air into the engine compartment. The vent hose is torn and hanging in two places between the port storage locker and partly in the engine compartment, so I want to verify the correct routing of the vent tube. Also, the 3" blower was not even connected to the wiring harness - the plug was dangling, and I am trying to locate where it plugs into the wiring harness.

Any help on this subject, along with pictures of the routing for the 3" hose and location of the wiring harness plug, would be appreciated.

Thanks,
Mike

[MTRBTR]

I think your 3” blower might be an after market thing. I could be wrong but I think there is usually only one. My 2006 211 only has one.

[196Mike]

It's from the factory, the same connector as the rest of the wiring harness, and looks like it has 14 years' worth of dirt on it. The blower actually mounts to the vent box with flange and hose clamp.

[shag]

I have owned Nautiques since 1989, including a 2006 SAN 210 and have never seen nor heard of a blower that draws fresh air in.

[NautiqueJeff]

I have never seen a Nautique with two blowers either.

[Stevemo14]

My 05 210 has the same setup. A 4" on the transom and a 3" on the port side vent. They both work off of the same blower switch ( ok button ), and I just figured that's the way they came. If its not, I wonder why the 3" was added.

I had to replace both the 4" and 3" vent tubes, but it wasn't a big deal.

[196Mike]

I have located the wiring harness connector (Molex connector and plugs directly into the wiring harness) to the 3" blower - it was behind the port side pad. Here are some pictures to show the location of both blower motors.


This is where the 3" blower motor mounts to in the front of the vent box - designed to bring in the fresh air. The connector that you see in the picture is the 3" Blower motor.



This is the 3" blower motor installed and hose routing location. The hose is significantly deteriorated, dangling and I think it should mount or hang in the engine compartment and not the storage area.


4" Blower motor that has been removed because it is not working and the mounting bracket on the transom. I believe this blower motor should be blowing air out the port side vent.


4" Blower vent tube routing and where it connects into the vent box.





Just trying to make sure when I put it back together that it is in there the correct way. Someone else worked on the boat prior to me purchasing it and I want to do it right.

Thanks,
MIke

[bturner]

In all my years of boating I've never seen or heard of this on a ski boat from any of the manufactures. This would truly be a first and kind of defies logic. The logic being....

Gas fumes are heavier than air and accumulate in the bottom of the bilge. The way the blower works with one blower is that the hose to the blower is near the bottom of the bilge. Air vents are typically by the windshield and the near the transom, the blower draws air from the bilge where the fumes would be and pull air from the front and rear side vents. This creates a vacuum effect that circulates the air in the bilge.

I guess I question if pressurizing air using another blower would actually push the fumes further into the bilge and work against the natural air flow you would be getting from those front and rear side vents.

I'm certainly not expert in bilge air flow but this seems counter to what my understanding has been and everything I've seen over the years.

All this said, that certainly looks stock.

[Stevemo14]

Maybe its an 05/06 thing. Like i said mine has the same setup

[196Mike]

Maybe its an 05/06 thing. Like i said mine has the same setup

Steve,

Does the 3" blower bring fresh air into the bottom of the bilge and the 4" blower take the fumes out?

Thanks,
Mike

[jkallen21]

My 06 SANTE is sort of the same. I have a 3" hose bringing fresh air in, however, it is not connected to a blower motor of any sort (the 4" "exhaust" hose does connect to a blower motor). The 3" fresh air tube is routed to the bottom of the bilge - the tube just ends there - open. I assume the idea is that with all compartments closed, the blower motor starts sucking the heavier fumes from the bilge area and starts exhausting, then the 3" provides fresh air via the "path of least resistance".
The funny thing about the design is that the exhausting air is exiting to the vents on the starboard stern side and the fresh air intake is about 5" in front of the exhaust (these are both hidden in the decorative vents). The pressure from the exhaust fan is pretty heavy and it blows right onto the 3" the fresh air intake port! So I've wondered if it's not simply recirculating the same fumes with some fresh air mixed in. I have not looked to see if my port side has the same 3" and 4" holes but if it does, maybe I will re-route one of them.

You have made me wonder now if there is a 3" blower motor down there. I will take a closer look next time I have time.

Just curious, does anyone actually know first hand of anything bad actually happening from not running the blower before starting? I know what "could" happen, and I always run mine, but it was many months before I realized my hoses were rotted.

-Jeff

[Stevemo14]

Steve,

Does the 3" blower bring fresh air into the bottom of the bilge and the 4" blower take the fumes out?

Thanks,
Mike

Yes, the 3" motor pulls air in, and the 4" blows are out of the vent.

[196Mike]

Yes, the 3" motor pulls air in, and the 4" blows are out of the vent.

Awesome! Thanks for the information.

[core-rider]

I got curious on my 03 SANTE so I looked and I only have 1 4" blower mounted on the transom and a hose connects it to the port side vent. The starboard side vent is just open into the ballast tank area. Honestly I think having the 3" blower force air into the bilge is a good thing. The air coming into the open vent will really only ever be forced in while the boat is underway, but that air might be only serving the ballast tank area as there's a divider wall. Yes there are areas for air to get in, but not efficiently like if there were hoses, blower motors, etc.

I'm guessing this was added between 03-05 to allow more fresh air... maybe a standard changed at some point and the second motor was added.