Hi,
Some days ago I finished a HE I put together with some basic materials.
You may see some pictures attached.
It basically consists of a 50mm diameter steel tube, 1.5m of copper (6mm outer diameter), a big nut, 2 cappings (those used on fences), a thermo switch and the fittings.
First thing is coiling the cooper pipe using a stick. Donīt kink it. While coiling it you must keep the pipe in tension.
Then drill a hole in the 50mm tube a bit bigger than the size of the thermal switch. That way it can protrude.
Now you will have to file the nut so that you get a concave shape that fits with the tube. You will spend a good deal of time here.
Now weld the nut and check if the switch can be screwed properly. Needless to say that the weld must be water tight.
It is time to drill holes on the cappings to insert the 2 fittings. The size of the fittings depends on the diameter of the hoses that carry the hot water in your car.
2 additional holes have to be drilled in one of the cappings so that the copper pipe can go through. The holes must be as tight as possible.
Now you put everything together and seal all the joints with Nural 27 or something similar. Ensure everything is clean and degreased before applying the sealing compound.
You may notice I have fitted small bolts securing the cappings. This is because I donīt want the Nural to take any loads. This way the bolts take the load and the Nural simply seals. If one of the cappings was blown off, the rate at which the cooling water would leave the circuit would make it difficult to stop in time to prevent engine damage.
The thermal switch will let you know when the water is hot enough to change from bio to WVO. I have connected it to a small led in my dashboard. The light switches on at 70 degrees.
Now the bad news; The copper pipe is too narrow, so the injection pump prefers to suck air. My electric pump (Facet 8PSI) does not push the oil hard enough.
Solution: Bigger cooper pipe and a more powerful pump. The first part is done. It has improved the situation, but I still need the pump.
Regards
gonzalo
Some days ago I finished a HE I put together with some basic materials.
You may see some pictures attached.
It basically consists of a 50mm diameter steel tube, 1.5m of copper (6mm outer diameter), a big nut, 2 cappings (those used on fences), a thermo switch and the fittings.
First thing is coiling the cooper pipe using a stick. Donīt kink it. While coiling it you must keep the pipe in tension.
Then drill a hole in the 50mm tube a bit bigger than the size of the thermal switch. That way it can protrude.
Now you will have to file the nut so that you get a concave shape that fits with the tube. You will spend a good deal of time here.
Now weld the nut and check if the switch can be screwed properly. Needless to say that the weld must be water tight.
It is time to drill holes on the cappings to insert the 2 fittings. The size of the fittings depends on the diameter of the hoses that carry the hot water in your car.
2 additional holes have to be drilled in one of the cappings so that the copper pipe can go through. The holes must be as tight as possible.
Now you put everything together and seal all the joints with Nural 27 or something similar. Ensure everything is clean and degreased before applying the sealing compound.
You may notice I have fitted small bolts securing the cappings. This is because I donīt want the Nural to take any loads. This way the bolts take the load and the Nural simply seals. If one of the cappings was blown off, the rate at which the cooling water would leave the circuit would make it difficult to stop in time to prevent engine damage.
The thermal switch will let you know when the water is hot enough to change from bio to WVO. I have connected it to a small led in my dashboard. The light switches on at 70 degrees.
Now the bad news; The copper pipe is too narrow, so the injection pump prefers to suck air. My electric pump (Facet 8PSI) does not push the oil hard enough.
Solution: Bigger cooper pipe and a more powerful pump. The first part is done. It has improved the situation, but I still need the pump.
Regards
gonzalo
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