Limited computer access compounded by local ice storm power outages....
Lapeer, right after I posted that about the Pollak valve, I got it out and looked at it for the first time since I received it. Of course, it was instantly obvious that you were right about the switching.. It has two valves, but one solenoid. So, I guess I'm stuck with having some WVO in my diesel tank -- unless I put a loopback system on the engine, but I don't want to do that. Oh well, I can just buy a bunch of switches and put them in the control panel with silly labels without hooking them up to anything but indicator lights.
I got the tank cut and welded for $100. Ouch. I'll post pictures soon.
There is a 4.25" x 1.25" slot for the heat exchanger to enter, and a plate with fittings to which the heat exchanger will attach. I drilled holes around the slot and tapped them for machine screws that will hold the plate and fittings to the tank.
(Still trying to get all the metal shavings out of the tank with a magnet on a coathanger.)
The adapter plate is welded in the end of the tank near the bottom, and the water heater element fits in it nicely.
Next I have to assemble the heat exchanger/plate and pressure test it. Then I have to mount it in the tank and then put the tank in its mounts. THEN I have to hold it in position on the frame and see where the mounts need to be located. THEN I have to bolt the tank to the frame while in the mounts, because there is no room to put the mounts on and then add the tank.
I need to get an electronic automotive temperature gauge for the tank. I was going to use a hot water heater thermostat, but that's too much wiring to be hanging on the underside of a bus. I will just use a temp gauge, and turn the water heater element on/off with a switch.
Then my bus will have a tank that is not hooked up to anything. But I will know how hot it is.
I got two home water filter units for filtration, and will mount them in series. One will have a 30-15 micron filter, and the other a 15-5 micron filter. Somewhere I'll add a water filter, too.
Still have to come up with a final (180 degree) heat exchanger. Thinking about running a copper coil above the exhaust header somehow. Not sure about that one, yet.
Then I have to run fuel supply/return lines.
Then I have to run water heater lines for the in-tank heat exchanger.
Hmmm.... what have I left out.
I was supposed to move to the park this weekend, but that's not going to happen until I get this conversion done. Maybe a week????
I made an Xcell spread sheet of how many miles of free fuel I would have to burn before this conversion would pay for itself with diesel at different prices. The spread sheet updates itself each time I add another expense. I'm going to have to drive a lot more miles than I thought....