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Album:Vegetable Oil Conversion:The Engine Bay
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This covers all the filter, sensor, solenoid and hose work that goes into
the engine bay.
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Pressure and temperature sensors
to check oil. I can switch over when the temp is near 180� (though until the oil is flowing I'm not sure how accurate this will be). I wanted to use a cross instead of two tees here but I didn't have one. In the end, a quad would have been trouble the way I mounted them, and I replaced one of the tees with a square tee for mounting purposes (see 'Solenoid Plate' below) ( comments)
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The splitters and valves.
Imagine that the yellow drill bit box is the engine. Left and right are the fuel valves (since replaced with solenoids). Bottom left are sensors. Top and bottom are coolant splitters. Bottom right are the luggage bay coolant split and combine, and the far right is the coolant combine/return ( comments)
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I removed the AC condenser
and then moved the diesel filter to the other side of this metal bracket. I'm putting all the fuel stuff in that space, freeing up the space in front for an eventual composting toilet. (You can see the old bolt holes to the left) ( comments)
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I made another mounting plate
for the clean exchanger/filter (out of cutting board material, actually), and mount it across from the diesel filter. ( comments)
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Solenoid plate.
Holds the fuel solenoid valves and the pressure/temp sensors. Using a 90� elbow I attach the sensors directly, I later added a hose clamp around the square tee for support. ( comments)
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The best (only) place
to mount the solenoid plate turned out to be on the filter plate. ( comments)
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Mounted back in the bus.
Hose running to the sensors/solenoid! ( comments)
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Wiring block
for the sensors/solenoids goes on the back of the plate. ( comments)
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Draining the coolant.
I shutoff the heater coolant return (a little late, actually) and drained out about 8 gallons before it was down to a trickle. ( comments)
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I cut the coolant return pipe
in the very back "passenger-side" corner (underneath the back lights and right turn signal). I cut it a little short, actually, which was kind of stupid - I should have a left a little more straight pipe to attach the rubber hose to. ( comments)
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Then I added the coolant return tee.
( comments)
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The coolant supply
comes off each side of the engine, through this pipe, elbow, and hose to another pipe (the rubber hose section is to handle engine vibration) ( comments)
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To get to the coolant supply
on the drivers side is a bit trickier. We had to pull the massive air filter, which is holding up the massive air intake, and has massive hoses running to things like the turbo. Here's Haley helping me remove the air filter mounts. ( comments)
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The left side of the bus,
with air filter housing removed. ( comments)
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Now we replace the elbows (left)
with a tee/quad fitting (such as on right) so we can add ports for our system. ( comments)
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The tee and quad.
( comments)
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The tee installed
on the left side. I should have turned the tee so the new hose (now wrapped in reflectix) was coming straight out, because those pushloc connectors are a nightmare. ( comments)
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And the hose from the left
goes up and over the back wall of the engine compartment to meet with all the hoses/filters on the right side. It's the silver reflectix in the back. ( comments)
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I put the quad
on the driver's side. A much easier job. ( comments)
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The engine filters
and coolant return tees/shutoff valve, all hooked up. It would be nice to have a valve on the supply as well, and maybe an auxillary pump. ( comments)
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I pull off the fuel return
to run it through the second solenoid. ( comments)
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The second solenoid plumbed.
The hose on the left comes from the engine. The blue goes into the original diesel return, and the shiny grey goes to the WVO return. You can also see the left side coolant supply wrapped here. ( comments)
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I added this double shut-off
quick connect coupler in line with the fuel (post solenoid). This way I can easily prime either fuel by disconnecting and then hooking up a fuel pump with a coupler on it. It's held in place by the loop that held the original hose, but on a different bracket. ( comments)
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