7 replies to this topic

[TheRedSl#t]

I came home and I could hear hissing comeing from expansion tank, any ideas... rad Flush/replace cap/thermostat?

[68+86auto]

Probably a bad cap.

[Steve220]

How far have you filled the expansion tank? It should never be at max from cold. About 10mm below is ideal. The cap can also a point of failure.

[TheRedSl#t]

68+86 auto. Yeah I was thinking that

Steve. As far as I remember it is a bit below the max, It have a check later 👍

[Quinlan minor]

The header tanks are prone to springing leaks.

For example:

[TheRedSl#t]

😮

I think I pop to minispares tomorrow pick up a preasure cap....

has anyone bought an alloy header tank? There a bit expensive but only 30 quid more than the OEM tank... but if a 6 quid cap does the trick then a add it to santas list

[Steve220]

😮

I think I pop to minispares tomorrow pick up a preasure cap....

has anyone bought an alloy header tank? There a bit expensive but only 30 quid more than the OEM tank... but if a 6 quid cap does the trick then a add it to santas list

Yep! But I designed my own and had it fabricated. It takes up less room.

[Deeppockets]

The blue coolant cap from the Bmw Mini is reputed to be the best, I fitted one after problems with a Rover one.

There is a discussion thread on the various options.

https://www.theminif...160-or-grc1184/