Expansion tank SII

XJ
1

Hello all,

I am not convinced I want to fit yet another expensive non durable mild steel expansion tank that will develop holes etc.

Is there any current wisdom as to what kind of modern stainless steel would fit a SII ?

Thank you

2

I am thinking of something simple like this.

Screenshot_20190515-204016
Screenshot_20190515-204016.jpg1080×2220 331 KB

3

Don’t you have to find one that can be fitted with a pressure cap? The pressure cap on my SII cooling system is on the factory expansion tank.

David

4

There are 2 pressure caps on the SII. One in front of the cylinder head and one on top of the expansion tank.

5

**
The one on the front, the header tank, is not a ‘pressure’ cap, Eric - it’s tight…

Frank
xj6 85 Sov Europe (UK/NZ)
**

1 Like
6

Eric, be careful with this. The cap on the cylinder head is NOT a pressure cap. It is clamped down tight and does not open up under high pressure. The only pressure relief point in the whole cooling system is the pressure cap fitted on the expansion tank.

David

1 Like
7

Ah yes, my mistake. Oops.