Coolant loss - what connects to header tank

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Originally Posted by Kaaaiju

I'll be installing mine tonight, it's fantastic qualityhttps://uploads.tapatalk-cdn.com/202...c7fed8e04b.jpg

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Man that is such a nice looking piece of gear. I have to get one of these.

Do you mind disclosing the cost?
If you do, sent me a PM.

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Originally Posted by d2dave

Man that is such a nice looking piece of gear. I have to get one of these.

Do you mind disclosing the cost?
If you do, sent me a PM.

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You searched for Header tank - Page 3 of 7 - AlliSport

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Originally Posted by sierrafery

That port was originally for the EGR cooler return that's a fact so if the EGR was deleted this port is futile so you need a Eu2 tank which doesnt have this port at all as it didnt have EGR cooler, you can buy BMW E30 tank which has a low level warning switch too, see from the following post and beyond https://www.aulro.com/afvb/discovery...ml#post3044197

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I beg to differ. The EGR cooler return is on the edge and has a smaller diameter. See the image.

Attachment 166340

The different pictures don’t help - but the EU3 Td5 has a line beneath the expansion tank as well. Not sure if they changed this set up between different years with the EU3 version as have also seen a second line on the side. So perhaps it depends on which bottle is installed.

https://uploads.tapatalk-cdn.com/202...1042561088.jpg

I am thinking this is a red herring and the expansion tank is a cheap replacement and has failed at a different point.

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Originally Posted by Bohica

I beg to differ. The EGR cooler return is on the edge and has a smaller diameter. See the image.

Attachment 166340

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That's the coolant return from top of radiator which is there for all modells

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Originally Posted by sierrafery

That's the coolant return from top of radiator which is there for all modells

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Look at the bottom.
Attachment 166341
Marked in green

That's what i was speaking about ...sorry i missed the pic from the OP first post cos it didnt open first time for some reason, now i see that big hole in the bottom

Just checked my old tank which rests in the garage and that "port" is there on Eu2 too but it's actually not a hole through it, it's blank from factory but it's interior bottom is thinner than the tank's body so i presume it's there to blow if too much pressure builds up in the tank [bighmmm], interesting, i didnt observe it untill this discussion

If it is leaking from that hole, how to fix it. I do not think that epoxy will work on nylon.
I think there is not enough room to add a very short hose and a blanking plug.
Better to get a new tank.

IMO untill the tank is replaced a proper OD glued rubber bung forced into that hole should be OK