| The Goat industries conversion kit
is based upon high quality 3-way valves that switch the
fuel supply over between two tanks. Vegetable oil is poured
into the vehicle's under chassis diesel tank and normal
diesel goes into a smaller tank located inside the vehicle.
Start up on diesel until the engine is warm and then switch
over to veg oil to do the bulk of the journey. Then, just
before arriving home, switch back to diesel ready for
cold starting the next day. Some vehicles may need another
3-way valve on the return line, depending on whether that
particular vehicle ends up with fuel flowing from one
tank to another or not. In many cases it is a matter of
trial and error.
|The conversion kit contains the pipe work, special high pressure fittings for oil, a diesel filter, a high quality toggle switch, electrical cable and other essential fittings.
An additional feature may be to incorporate
a heat exchanger after the veg oil filter to pre-heat the oil before
it reaches the pump. Tests that we have done ourselves have shown
that the injector pump itself is a very effective heat exchanger, heating the oil to about 50 degrees C in the Summer. Heat is transferred from the
hot engine to the injector pump through it's mounting and heat is
generated in the pump through friction. Heat exchangers are very useful in the winter though, when temperatures can be much lower. Heated fuel filters might
be an idea as veg oil will go waxey at lower temperatures, but a
good alternative is to mix the oil with 10% petrol which will offset
the cold filter plugging point and also significantly lower the
viscosity. A splash of veggi-boost
will also help combustibility.
The two main reasons for having a conversion
kit are 1. To enable the vehicle start easily from cold and 2. To
reduce the strain on the pump by avoiding pumping veg oil when it
is cold. Some vehicles are not compatible with vegetable oil use,
namely those fitted with lucas, CAV, delphi or transdyne injector
pumps. Our database shows that these types of pump have a high rate
of failiure (25%) and so should be avoided altogether. Solutions
would be to either sell the vehicle or exchange the pump for a bosch.
|The photo on right shows the conversion kit installed in a
diesel van. The small diesel filter and the switch over valve
can be seen clearly.
The main points:
- A two tank system with electric switch over to veg oil once
the engine is warm. Switch back to diesel at the end of the journey.
- Add 10% petrol to the veg oil to thin it down and stop it waxing
- Not compatible with lucas, CAV and delphi injector pumps. Bosch
pumps are best.
- Not compatible with computer managed fuel systems ie. vehicles
younger than year 2000.
To purchase a Goat industries conversion kit
please go to: products page. Otherwise try Dieselveg
in Wolverhampton, who also provide a fitting service.
Please check what your fuel delivery system is before
- What is the make of the pump?
- How old is the vehicle?
- Does it have computer controlled fuel management?
- Does it have a lift pump and is it mechanical or
Do you need to know if your car is compatible? Consultation for amateurs is £10.00 - Please see products page here.