Advice on Bowman heat exchanger expansion tank needed

[mikeakc]

Hi all,
I have a Bowman heat exhanger with no expansion tank. This means I top it up, then when the coolant expands it dribbles out of the nozzle in the picture and is lost from the system. I then sponge it out of my drip tray at the end of the season which doesn't seem like the ideal solution! Does anyone know if there's a specific expansion tank to go on this system? If so, could you direct me towards it please? I also can't see how it could be mounted (no brackets) does it just cable tie to the heat exhanger itself?! There's not a huge amount of room within the engine box so hopefully there's a slimline solution out there.
Thanks in advance for any advice,
Mike

 

[rotrax]

Put a pipe on it and route it into a catch container.

 

[Ink]

Don't fill the heat exchanger so full.

Ink

 

[VicS]

What Rotrax and Ink say
+
The pressure cap my be past its best ... fit a new one.

 

[tillergirl]

VicD, Rotrax and Ink - correct. I had a regular 'pressure relief' via the 'nozzle'. Changed the cap which did improve it but still happened to a lesser extent. Stopped topping up coolant and left at its own level and it all stopped. Less in the exchanger/header tank didn't affect the temperature at all.

 

[Bilgediver]

What Rotrax and Ink say
+
The pressure cap my be past its best ... fit a new one.

Yes the suggestion to get a suitable container to catch what comes out. However make sure you have the correct cap on the heat exchanger so that as the engine cools it can suck water back into the system. Some caps have return valves and some do not and the latter are unsuitable, Halfords have both types. This saves having to top up the heat exchanger and only need to keep the expansion container a little less than half full when the engine is cold.