240SD Head Upgrade

denwatson

Member
Aug 3, 2010
74
California Delta
Boat Info
2007 240 Sundeck and before that 1988 Sea Ray Sorrento 23
Engines
350 MAG MPI BravoIII and before that 5.0 Merc 260 with Alpha drive
If I was ordering my '07 240SD new, I would opt for the vacuflush toilet with the ten gallon holding tank. Since our boat was "previously owned" we got what the first guy wanted. In this case the Sealand porta potti with pumpout. Our first guy was a boat user, not a boat maintainer. Our boat came with a bunch of deficiancies including the Sealand with a full holding tank. So I found myself in the driveway dismounting the Sealand so I could dump the tank since we don't have a pumpout unit at home. As I'm hauling the holding tank to our guest bathroom I'm thinking wouldn't it be nice to have my very own new potti with an empty tank. I got on the Sea Ray website to see what they are installing these days. Sea Ray uses the Dometic Sealand 970 series. Good enough for Sea Ray is good enough for me. As long as we are upgrading let's get the one with the five gallon holding tank instead of the two gallon tank. More time between pumpouts and lower pumpout fees. I tried to determine if the plumbing was at least similar but couldn't really see the connections on line. Whatever, same boat builder, same toilet builder how bad could it be? We shopped the toilet and ordered it from an outfit by the name of Ultimate Passage in Ohio. Best price and good service. So the toilet arrives and of course the plumbing connections are completely different. A trip to West Marine produced one foot of 1 1/2" sewer(bilge) hose, a 1 1/2" barbed elbow, one foot of 5/8" vent hose, a 5/8" barbed coupling and the appropriate hose clamps. I swear you could use this hose as the gun on a tank. It doesn't like to bend or be cut. Eventually it all worked out as you can see in the photos. I mounted the toilet closer to the edge of the mounting surface because the five gallon model is three inches taller and the head ceiling comes into play. Big people could use the thing but ours is mostly for the grandkids. The first words out of their mouths after boarding is "Gramps I have to go potty". For them it's like a ride at Disneyland, going potty while watching the water flash by through the portlight. The 970 is a better unit than the old Sealand. It has an air tank which you pump to pressure then hit a release button to flush, works good. It has a little sight gauge to monitor the holding tank. Total cost about $150 for the whole project. Turns out the pumpout facility at our marina is provided free by some environmental group, so much for saving pumpout fees.
 

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Thanks for the story. I have a 2.5 gal in my 240 and same problem. I was planning on buying a 5gal system so this is good info. For now though, just pulled it out of Grand Traverse Bay in Traverse City MI for the season. See you next spring!
 
Good luck on the upgrade!!
 
Thanks Chuck and the sponsorship eliminated the attachment problem we discussed.
 
Yes. The 975MSD just means dockside pumpout.
 
I purchased the same toilet locally (Ft Myers). I paid more. My vent line fit but I have to modify the pump out hose as you did. Pictures are not necessary because it looks identical :)

Thanks
Jim
 
Would the the same modification be necessary for a 240 sundancer? I believe in my head the lines are not directly behind but to the right of the toilet.
 
I'm sure it would just be a plumbing problem. West Marine(or equivelent) has all the parts in sizes. On the other hand don't underestimate the "P" word, ever try to R & R a kitchen faucet? Good luck!
 
Great upgrade indeed! I was thinking about doing it on my 220 SD but I fear that there will not be enough headroom for the big kids like me :)

Any idea what the height difference is?
 
Joe, It's about 3 inches but you can compensate by moving the toilet to the edge of the mounting platform. That is moving the toilet aft on the mounting area. I'm 6ft and did a sit down test to make sure it is still usable and unless you are NBA material you should be OK.
 
This is an upgrade I need and want to do! Glad to see the pics and the parts list. Thanks for sharing.
Has anyone ever upgraded from the porta-potty to a vacuflush in a with a real holding tank? I am pretty sure you can get all the parts from Sea Ray.
 
Joe, It's about 3 inches but you can compensate by moving the toilet to the edge of the mounting platform. That is moving the toilet aft on the mounting area. I'm 6ft and did a sit down test to make sure it is still usable and unless you are NBA material you should be OK.

Can anyone show pics or describe the process of moving the mounting hardware on this modification? By way of that, I mean the screws used and procedure? I am nervous to relocate the screw holes and screw into the fiberglass as I don't know what's underneath. Best fastener, length etc.

Thanks all. I love the sharing and caring of the Internet and these forums!
 
Can anyone show pics or describe the process of moving the mounting hardware on this modification? By way of that, I mean the screws used and procedure? I am nervous to relocate the screw holes and screw into the fiberglass as I don't know what's underneath. Best fastener, length etc.

Thanks all. I love the sharing and caring of the Internet and these forums!

Simply position the toilet where you want it and just reuse the same screws. Easy peasy. Be sure to drill the proper pilot hole and chamfer the hole to avoid stress cracks.
 

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