I would like some more information on the WT-DURA-4K unit you sell, your website mentions it is designed for an electronic water pump but just wanted to double check is it still suitable to run with a standard water pump? Maybe you are aware of others running this way. I don’t think there is room in the rules for me to use an electronic water pump.
The reason we recommend its use with electronic water pump only, is because the standard water pump and thermostat requires a recirculation pipe to take hot water from the back of the cylinder head into the back of the thermostat housing. This water then recirculates around the engine keeping an even temperature, this water passing over the thermostat causes it to open at the appropriate temperature. If this pipe is removed, then the thermostat cannot operate correctly causing erratic engine temperature changes as the thermostat then relies on radiated heat. Once it begins to open, then would then be a sudden rush which would instantly cause the thermostat to close again and the cycle begins again.
So you could use our water outlet and there are various options, which are plugged. You would then need to fit a tube to allow water to flow to the thermostat but this is not a straight forward task and should only be undertaken if you have the appropriate skills.
When using the electric water pump, the thermostat is not fitted and coolant flow is controlled by the electronics.
I'm having trouble with Duratec cooling system. The car is RWD Mk6 Escort and the rad is mounted low hence the rad top hose has to dip down. The water rail has no rear outlet to run heater or bypass hoses just has a switch to operate rad fan. The Mk 6 has a header tank with a air bleed to top of rad. Runs and cools perfect until sitting at idle when it starts to heat up. Do I require a extra bleed pipe from top of rail engine or bypass and heater pipes refitted. Or do I put on a David Craig pump, any thoughts would be greatly appreciated.
All our vehicles are equipped with an electric water pump controlled by our ECUs. We do not use the mechanical water pump due to shortcomings in the Ford design. If you are using a mechanical water pump, great care must be taken and bleeds are always essential to prevent air locks. We have no diagrams for the mechanical system as this is not something we recommend. The diagram on our website is only for the electric water pump design.