1989 340EC black water holding tank specs?

[wileecoyote]

I have looked in the owners manual, the SeaLand manual, and the sales brochure on SeaRay.com and have yet to be able to find the size of the tank. I replaced the duckbills earlier in the year and flushed lots of water through it, so the first time it filled up pretty quick. I'm just wondering how long it takes to fill up based on size comparison. Thanks for the help if anyone has the info handy.

 

[wileecoyote]

I measured the tank, the dimensions are 28 1/2 X 18 1/2 X 12. If my calculations are correct, I believe it comes out to 21.5 Gallons. Or somewhere close. 3 Grown men trying to figure out gallon capacity from tape measure readings:lol: sitting on the dock in the half dark!

 

[rondds]

Mark
6327 cubic inches = 27.39 gallons.
http://www.onlineconversion.com/
Great website worth bookmarking.

I couldn't find the spec on mine either so I emailed SR. Always the skeptic, I had to confirm it by measuring and converting.

 

[wileecoyote]

Mark
6327 cubic inches = 27.39 gallons.
http://www.onlineconversion.com/
Great website worth bookmarking.

I couldn't find the spec on mine either so I emailed SR. Always the skeptic, I had to confirm it by measuring and converting.

I gave you the wrong measurements. 28 /12 X 14 1/2 X 12.

I knew it wasn't right because I remember coming up with something in the 4800 area.