Perry Mick wrote:

Recently Jon Lauter asked why I was using a 24 psi pressure
cap.  I think we need to discuss this.  It was Tracy who originally
advocated using higher pressure caps for high altitude use.  I
think Ed Anderson is also running a higher pressure cap, while
I'm throwing names out.

The 2nd gen RX-7 uses 13 psi caps, the 3rd gen 16 psi.  I was
running a 16 psi cap initially but changed to 24 psi during my
flight test period.  My coolant pressure is typically between
10 and 15 psi, so I think 13 and 16 psi is a little marginal.
I think I'm also running a little higher temperature/pressure
than normal because I have a relatively small volume of
coolant.  This will change slightly in the future when I install
a real radiator with end tanks.

I would like to hear what others are using and think about
this issue.

--
Perry J. Mick
Duckt N7XR
http://www.ductedfan.com

BTW Perry your flywheel is history. I donated one of mine
since I will never need a manual tx flywheel.

Paul Lamar
 
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