Discovery Allisport aluminium expansion tank.

Discovery 1 Allisport aluminium expansion tank

Looking to replace the black plastic original, have been told these aluminum ones aid cooling and as they are one piece are not prone to splitting under pressure.

Also want to know if you can get silicone hoses for a V8 as they are only ever advertised for tdi td5 i.e. diesel

Craig

kurgan said:

Discovery 1 Allisport aluminium expansion tank

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Good luck!

My header split in spectacular fashion. Persuaded Mrs AWP to let me have an Allisport expansion tank. Beautiful bit of kit. So much so that I ordered a full width intercooler one week later.

auf_wiedersehen_pet said:

Good luck!

My header split in spectacular fashion. Persuaded Mrs AWP to let me have an Allisport expansion tank. Beautiful bit of kit. So much so that I ordered a full width intercooler one week later.

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Nice pics I'm on my second plastic expansion tank, hence wanting the allisport tank, I believe it improves cooling, is this the case?

Craig

kurgan said:

Nice pics I'm on my second plastic expansion tank, hence wanting the allisport tank, I believe it improves cooling, is this the case?

Craig

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Hi Craig,

In principle, yes. Aluminium conducts more heat than plastic. Not noticed anything on the gauge though.

I too was thinking of one of these but during a convo about them the other day - a good point was raised.

We hear many-a-tale of 300tdi header tanks bursting etc. A lot of this can be put down to the high pressure release caps failing, therefore finding the next weakest point which is obviously the header tank itself.
So where will be the next weakest point be if you've a header tank such as this one fitted and the cap fails to release the high pressure? :boom:

Mark L said:

So where will be the next weakest point be

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The next weakest point in the system is your wallet

I never screw my cap fully tight for this very reason.

Would it be beneficial to get replacement cap at same time? Even though current one is only 6 months old.

kurgan said:

Would it be beneficial to get replacement cap at same time? Even though current one is only 6 months old.

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Yes - they are not expensive. My new one "rattled" and the old one didn't which I guess means that all of the parts which are supposed to move are free to move.