marc wrote:

Hello,
I found that picture of the $140  aluminum Air Separation Tank-see
attached. This unit replaces the plastic units on the 93-99 rx7. ASTpic.jpg
Marc Wiese

Where do you get these Marc?

Paul Lamar

Jeff Spitzer wrote:

That looks exactly like what I described on my long post about air
separation.  Note that the inlet tube enters about halfway up to make sure
that it doesn't entrain air if there is an air pocket at the top.  Note
that this tank contains the pressure cap.  The outlet should be on the
bottom and not in the center 'cause it may induce a "whirlpool" that can
bring the air all the way to the bottom.  Someone else mentioned that the
other cap on the water pump housing was fill only, right?

Jeff Spitzer

Only on the thrid gen is it fill only. On the 2nd gen it is the 
only cap.

Paul Lamar

 
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