Sender: <marv@lancaironline.net> (Marvin Kaye)
To: flyrotary
Date: Fri, 29 Nov 2002 22:08:14 -0500
Message-ID: <redirect-1891364@logan.com>
From: Wschertz2@aol.com
Subject: Re: [FlyRotary] Radiator plumbing
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In a message dated 11/28/2002 12:03:42 AM Central Standard Time, 
n268bl@charter.net writes:

> > Since most people seem to run the two evap cores in series, we can assume
>  > that it really doesn't require all that much flow, since we now know they
>  > probably aren't getting as much as I would have imagined.  Interesting...
>  > have to think about this some more.
>  
>  A little more info on radiators.  I run two 86 Caprice evaporator cores in
>  parallel.  I have temp probes on the exit lines from each core, and they
>  seem to share the load almost equally.  Temp drop with 90+ degree OAT is
>  10-15 F, and now in cooler weather, sometimes I see a 30 F drop.
>  
>  Also, I recently re-plumbed my system (to allow for an intake mod) and
>  installed a stock thermostat.  Warm-up is now much faster (duh!).  I cut up
>  the stock water exit and welded it back together such that it stays under
>  the cowl.  I was told that the aluminum casting material was basically
>  un-weldable due to all the impurities, but my neighbor is a TIG aficionado
>  and was able to do a nice job on it after some experimentation.  (By the
>  way, this is also the same guy who won the Copperstate race from Apple
>  Valley, CA., in his Polen Special. He averaged 258+ KTS on 180 HP.)
>  
--------------------
Bill,
This is interesting and good data to have, I have a couple of questions that 
will help me interpret pump test results also.

1. If I remember right, you are using 3/4" hose to each core, with 3/4" hose 
back to a collector near the pump, is that correct?
2. Did the 30 degree drop manifest itself before or after you did the 
modification and put in a thermostat? If before -- I would expect that it 
also lowered your operating temperature of the engine, if after I would 
suggest that the thermostat is doing its job and cutting the flow rate due to 
cooler weather, and keeping the outlet temp of the flow to the set point.  If 
that is the case the performance during 90 degree weather will be very 
interesting to observe.

Thanks for sharing your information. 

Bill Schertz
KIS Cruiser #4045