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How to Convert a Gas Vehicle Into Biofuel

As more and more drivers are trying to reduce their reliance on gasoline to power automobiles, biofuel is considered a very viable alternative source. One form of biofuel is water, which is turn is used to produce HHO (oxyhydrogen) gas in order to mix with gasoline for an hybrid powered vehicle.

What You'll Need:



  • (8) Stainless steel plates, 0.8mm by 160mm by 200mm

  • Metal drill

  • Stainless steel pieces

  • Orbital sander for metal

  • Rough metal fie

  • PVC end plates, spacer rings

  • Pipe thread

  • (8) 700-mm M8 bolts

  • Gas valve

  • Gas/water hose

  • Epoxy glue

  • Metal for bracing

  • Bubbler

  • ID 12-mm OD rubber hose

  • Nyloc nuts

  • PWM circuit unit



  1. Start by drilling a 10-mm gas vent hole into each plate followed by a 3-mm liquid level equalization hole in the bottom corner of the plates. Any adjacent plates should have holes in opposite corners.

  2. Utilize an orbital sander to clean the plate surfaces and inscribe them with a rough file crosshatch pattern on the plates. Completing this step will increase the active surface area.

  3. Next, cut a 200-mm-by-240-mm end plates from the 12-mm thick PVC.

  4. Drill eight 8-mm holes to use for the M8-size stainless steel bolts that will eventually tie the unit together. Then drill gas vent hole in each of the end plates.

  5. Tap an 11.8-mm gas vent hole in the end plates using pipe thread. Align the gas valve with the gas vent holes found in the steel plates.

  6. Glue the gas/water hose to the tapped holes on the end plates using epoxy glue. Glue the gas valve to each hose end and glue the other valve outlet to the hose. Install the metal bracing in order to prevent any buckling once the unit is tightened. Weld several small stainless steel pieces to the end plates to create electrical contact.

  7. Cut spacer rings 200-mm-by-240-mm and at least 3-mm thick from the soft PVC and cut out the middle of rings.

  8. Then slide a 35-mm piece of 8-mm ID 12-mm OD rubber hose over the top of the bolts. Completing this step will shield them from the plates and secure the plates. Tighten each of the end plates together using an M8 stainless steel bolt with Nyloc nuts.

  9. Cover the unit in water that is at least 140 degrees Fahrenheit with the gas vent valves closed. This will soften the PVC and create a solid seal.

  10. Run a hose along the gas outtake to non-return valve between the electrolyzer and bubbler in order to prevent any water push back. Run a hose from the bubbler to the car intake system.

  11. Fill an up electrolyzer with vinegar in order to help neutralize lingering NaOH vapors from getting inside the output gas.

  12. Connect the electrical wires to the stainless steel pieces on each of the end plates and connect the wires to battery. You will generally need 1.59 amps to generate gas.

  13. Connect one end of the hose to the water vessel and install an electrolyzer in the car.