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Open Roads Forum  >  Tech Issues  > Toilet swap (Thetford to Dometic SeaLand) This Topic Is Closed  |  Print Topic  |  Post New Topic  |  Oldest first Newest first  Mike Schriber • View posts San Diego, CA Senior Member Joined: 10/29/2004 View Profile Good Sam RV Club Member Posted: 07/12/10 10:03pm Link  |  Print  |  Notify Moderator The motorhome I just bought has a Thetford plastic toilet with a hand operated flush. I want to swap it with the Dometic SeaLand porcelain foot flush toilet I have in my trailer (that I'm selling). I took a quick look and noticed two things... the plumbing goes to a different location (and is PEX on both rigs) and more importantly, the Dometic toilet has four bolts and the Thetford only has two. The PEX I can deal with but now I have serious concerns about the ability to swap one for the other. Has anyone ever swapped brands like this? Any advise? Thanks! Mike 2006 Damon Daybreak 3276 37' bunkhouse 2007 Jeep Wrangler Rubicon Unlimited SoCal Family Campers 96Bounder30E • View posts America is my home! Moderator Joined: 11/21/2002 View Profile Good Sam RV Club Member Offline Posted: 07/12/10 10:22pm Link  |  Print  |  Notify Moderator Mike, I have no experience with a Sealand toilet but, I did swap my old plastic Thetford out for a new Thetford china bowl style plus toilet.......the plumbing was different and the bolt pattern was different......so, it wasn't a simple swap out....... To handle the bolt pattern issue.......I used a Dremel tool to notch out new slots in the ABS plastic toilet flange.....no big deal!.......and for the plumbing, I went to Home Depot and bought a flex line and a shut off valve that allowed me enough flexibility to move the supply line....... I suspect once you remove both toilets you will find a very similar situation......not that big of a deal........ javaseuf • View posts California's Gold Coast Senior Member Joined: 03/30/2005 View Profile Posted: 07/12/10 11:07pm Link  |  Print  |  Notify Moderator One other problem you could run into will be. as Eric said above, a different bolt position and many times a toilet flange in a RV application is glued into position into a slip fitting on top of the black tank. If this is the case, you won't be able to turn the flange to re-position the bolts and as Eric mentioned above, about the only way will be to "cut" in new bolt slots. Mike Schriber • View posts San Diego, CA Senior Member Joined: 10/29/2004 View Profile Good Sam RV Club Member Posted: 07/13/10 12:40pm Link  |  Print  |  Notify Moderator Thanks for the feedback guys. Since I have to swap toilets it's probably more trouble than it's worth. I can pickup an Thetford Aqua-Magic Style II for under $200 and it has the same bolt pattern (just gotta check the depth). I guess it'll be a selling point on the trailer! Mike This Topic Is Closed  |  Print Topic  |  Post New Topic  |  Oldest first Newest first  Open Roads Forum  >  Tech Issues  > Toilet swap (Thetford to Dometic SeaLand)

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