Adding a larger grey tank to a 78 Tradewind
I have a 1978 25 ft. TradeWind with the infamously small grey tank (like 12 gal. - rediculous!). I have recently dropped the belly pans because I had a split brake line that needed repair,,, and now I have removed the side wraps so I can wire brush and POR15 the frame as long as I am there..... And, since I am there, how about installing a bigger grey tank????? Madness.... just madness....
So, what's the easiest approach to adding more grey tank capacity?
I can add a second tank closer to the axles, but there are some drain pipe height issues to work out and, the existing grey tank will have to be replaced since I can't cut into it and I can't merge into it's discharge line.
Oh yeah, I also want to install a macerator semi-permanently.... there is just enough room for it, I think....
Does anyone out there have the drain pipe plumbing diagram from the service manual for a mid-to-late 80's, or 90's, 25 ft. TradeWind with the rear Shower Bath configuration? I am looking for ideas....
And, do I really need the foam pad under the tank? I am not winter camping (not using water when I do) and I will support the tanks independent of the bottom cover.