2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

AST on an FC. any benifits from it?

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Old Jul 31, 2007 | 02:37 PM
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AST on an FC. any benifits from it?

Just wondering if running an AST (air separation tank) would have any extra benefits on an FC. I know FD's have them and alot of guys switch them out since the stock ones tend to crack. I currently getting ready to put in a new radiator and i figured if it would be helpful that i would go ahead and install on while i have everything tore apart. If it won't make difference then i won't bother with it.
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Old Jul 31, 2007 | 02:46 PM
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Could be a useful thing if you're flogging the car around a race track.

From http://www.grahamgoode.com/cool.htm

What does the swirl pot do?


It is standard race car practice to use a swirl pot in the cooling system. If hot spots in the engine cause localised boiling of the water, small pockets of air will form. Air in the water will reduce the heat transference properties of the cooling system. If correctly positioned & designed, the swirl pot will spin the water around inside it, making any water pockets form in the middle of the water. Percolation will then make this air rise inside the swirl pot, and exit out of the small bleed tube in the top, back to the header tank.
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