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David,
While my a/c hasn't flown, I do have 5 hours of ground time on my n/a 20B.
I just finished wiring my EM-2 last weekend and powered it up for the first
time. The EM-2 tells me that my cooling system maintains 27 psi at the
exit of the block. My system is designed with a single purge tank and one
25# radiator cap on the purge tank. It also has an overflow bottle without any
pressure cap to catch any burbles. After about a 30 min.run on Sunday, I
noticed that it purged some air and sucked in about a cup of
coolant from the catch tank. I figure that it will stop doing that once all the air
is out of the system. Hope this helps.
Mark S.
At 09:05 PM 3/22/2004 -0800, you wrote:
Several times on the rotary lists people have mentioned a tiered cooling
system. One in which a primary cap spills over into a pressurized
reservoir. I have been trying to set up such a system except that the
secondary (upper) seal on a radiator cap will not hold any significant
amount of pressure. So the pressurized reservoir only spills coolant
around the primary radiator cap. Does any one know of a cap that will
hold pressure (at least 20 psi) to its reservoir?
David Leonard
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