Area Representative z7 Posted September 23, 2023 Area Representative Share Posted September 23, 2023 I have a Zetec with Raceline water rail, and header tank.For those with similar, how do you fill your coolant and what quantity?Thanks Link to comment Share on other sites More sharing options...
Radn34 Posted September 24, 2023 Share Posted September 24, 2023 Hi Z7,I am not sure if there are different versions of the water rail, but on mine I originally didn't have a header tank so filled through the thermostat housing to just below the overflow outlet. I remember speaking to Raceline at the time who suggested this was the way to go.I subsequently fabricated my own header tank that feeds into the thermostat housing overflow connector (and replaced the thermostat housing pressure cap for a blank one). Despite now being theoretically able to fill through the header tank I still find myself filling and checking through the thermostat housing cap. The header tank essentially just preventing a the loss of coolant into the overflow bottle. Link to comment Share on other sites More sharing options...
Area Representative z7 Posted September 25, 2023 Author Area Representative Share Posted September 25, 2023 Thanks Radn34 I was interested to hear what other do.AFAIK, there is only one water rail but, as you have done, it can be fitted with or without the header tank. Link to comment Share on other sites More sharing options...
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