Hi all,
So I have something of an absolutely crazy idea and I need someone to either talk me down from it, or better yet, help me figure this out, cause I think I can make this happen.
So the backstory is this: I can get my hands on a Japanese market Toto Neorest (one of the latest models), for a little under $2K. Not cheap, but nothing like the eye-popping prices ($10K?! I'd rather buy a car!) they seem to command in North America. The only problem is... the piping is different, so I wanted to sound out some thoughts here from y'all who certainly have far more experience than I do on this on how crazy my plan is.
First of all, the water hoses have same dimensions (oddly, they're imperial) but the threading is a little different. This is fine; I have previously brought over several washlets from Japan and with some Home Depot magic, they install just fine, there are enough adapters stateside to make this work. So water supply is not a problem, I have them in my house now.
Where I'm running into a theoretical challenge is with the rough-in. In the US, rough-ins are 10/12/14", whereas in Japan, they are 200mm on average, and you can get an adjustable rough-in adapter that makes it go anywhere between 150mm and 305mm. That's not bad in itself, but the shape of the Japanese drain hole is completely different from the US one: here is a guy installing a toilet, this is a typical drain hole in Japan (first off, it sticks out - they don't use wax seals, they basically cover the flange with a certain glue-like substance and seat it on top). I believe also the diameter of the drainage is different, and the screw holes are likely different.
Where I am looking for advice is this.
1. This is the US version of the Neorest, side cut. You can see the grey floor-mounted default 12" floor drain socket.
2. I do not know whether the vertical spacing between the floor and the top of the floor drain (the rubber seal) that the Neorest lowers onto is the same between the 750H and the Japanese one I'm looking at (the Neorest AH). The North American drawings are here, but I can't find any equally detailed Japanese ones.
So my proposed solution is this: Toto Japan sells an adjustable floor drain for the odd houses that do not have a 200mm rough-in, which looks like this. The detailed PDF is here and a picture is here. It is available in two pipe sizes: 74mm (older toilets) and 64mm (newer toilets). I also notice that Toto USA sells the Unifit adapter.
So all this backstory where I'm basically wondering: am I crazy to try to get a Unifit, cut both it, and the Japanese adjustable Toto drainage pipe, then weld them together (or 3D print an adapter pipe or something and glue it?) so that the Neorest end is the Japanese one (so I am not risking any height problems) and the drain connection is a US one (so that I don't run into floor incompatibilities)? This would allow me to keep length the same as "stock", so no siphoning problems etc, just make sure it "connects" to the floor. I think I'm not missing anything here?
Not sure if this writeup makes sense, I'm writing this as I think, but I would appreciate someone ripping my logic apart or else telling me I am onto something here.
Thanks very much!
So I have something of an absolutely crazy idea and I need someone to either talk me down from it, or better yet, help me figure this out, cause I think I can make this happen.
So the backstory is this: I can get my hands on a Japanese market Toto Neorest (one of the latest models), for a little under $2K. Not cheap, but nothing like the eye-popping prices ($10K?! I'd rather buy a car!) they seem to command in North America. The only problem is... the piping is different, so I wanted to sound out some thoughts here from y'all who certainly have far more experience than I do on this on how crazy my plan is.
First of all, the water hoses have same dimensions (oddly, they're imperial) but the threading is a little different. This is fine; I have previously brought over several washlets from Japan and with some Home Depot magic, they install just fine, there are enough adapters stateside to make this work. So water supply is not a problem, I have them in my house now.
Where I'm running into a theoretical challenge is with the rough-in. In the US, rough-ins are 10/12/14", whereas in Japan, they are 200mm on average, and you can get an adjustable rough-in adapter that makes it go anywhere between 150mm and 305mm. That's not bad in itself, but the shape of the Japanese drain hole is completely different from the US one: here is a guy installing a toilet, this is a typical drain hole in Japan (first off, it sticks out - they don't use wax seals, they basically cover the flange with a certain glue-like substance and seat it on top). I believe also the diameter of the drainage is different, and the screw holes are likely different.
Where I am looking for advice is this.
1. This is the US version of the Neorest, side cut. You can see the grey floor-mounted default 12" floor drain socket.
2. I do not know whether the vertical spacing between the floor and the top of the floor drain (the rubber seal) that the Neorest lowers onto is the same between the 750H and the Japanese one I'm looking at (the Neorest AH). The North American drawings are here, but I can't find any equally detailed Japanese ones.
So my proposed solution is this: Toto Japan sells an adjustable floor drain for the odd houses that do not have a 200mm rough-in, which looks like this. The detailed PDF is here and a picture is here. It is available in two pipe sizes: 74mm (older toilets) and 64mm (newer toilets). I also notice that Toto USA sells the Unifit adapter.
So all this backstory where I'm basically wondering: am I crazy to try to get a Unifit, cut both it, and the Japanese adjustable Toto drainage pipe, then weld them together (or 3D print an adapter pipe or something and glue it?) so that the Neorest end is the Japanese one (so I am not risking any height problems) and the drain connection is a US one (so that I don't run into floor incompatibilities)? This would allow me to keep length the same as "stock", so no siphoning problems etc, just make sure it "connects" to the floor. I think I'm not missing anything here?
Not sure if this writeup makes sense, I'm writing this as I think, but I would appreciate someone ripping my logic apart or else telling me I am onto something here.
Thanks very much!
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