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The mkiv Supra Owners Club

Expansion bottle


psymon

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The blingy one was a little too pricey for me!

 

Anyway, I've made a makeshift expansion tank out of a gym bottle, just until the replacement arrives! It seems to be working okay.

nothing wrong with that mate just make sure it can "breath" otherwise :bang: and they'll be coolant everywhere

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  • 3 weeks later...

I've just been considering buying one of these.

 

This unit has four nozzles. I've just been speaking to the guy that sells them and he says that on a typical vehicle, you'd simply hose two of the nozzles together. The leaves two... One inlet and one outlet. He explained to me that the inlet is for the pressurized water coming through the rad cap, while the outlet feeds back to the bottom of the rad.

 

But I'm only aware of the one hose at the top of the rad??? So, if he's right, then the home-made water bottle doesn't work because there is no feed back into the rad. :search:

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The stock one has no return, it's got a pickup hose that goes to the bottom of the tank. As the coolant expands, it goes into the expansion tank, as it cools, it's sucked back into the radiator. That's all you need, but you *do* need it. I wouldn't run without one, you'll be low on coolant after one drive, and have lots of nice airlocks introduced.

 

-Ian

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