Sender: <marv@lancaironline.net> (Marvin Kaye)
To: flyrotary
Date: Thu, 20 Mar 2003 01:01:21 -0500
Message-ID: <redirect-2080800@logan.com>
Reply-To: <13brv3@mchsi.com>
From: <13brv3@mchsi.com>
Subject: RE: [FlyRotary] Re: Oil cooler in the radiator?
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That's exactly what I'm doing, Rusty. When you consider 30% of the =
cooling
is=20
done by the oil cooler, so the radiator has to be sized accordingly. The =

installations I've seen in the past never had a large enough radiator =
and=20
enough heat exchanger plates installed. For my NA installation, I'm =
going to

try around 1000 cu. in., this is based on around 2400 CFM flow. I'm =
pretty=20
confident it will work with proper intake and recovery ducting, well =
see.
Sure=20
will make installation plumbing easier. It will require oil bypass for=20
temperture control(check out C&R Racing) Fred
-----------------------------

Good points Fred, and math that I can actually use :-) =20

I've been a bit fixated on radiator sizes for only water, and didn't
consider the oil cooling capacity in my size. Here's how I see the =
sizes:

Ed's two evap cores- 680 cu in total
2nd Gen RX-7 oil cooler- 180 cu in.

This gives a total of 860 cu in for oil and water. My originally planned =
18
x 18.5 x 2.5 core gives a total of 833 cu in, which should be plenty for
water, but could be on the small side for oil and water.  My next option
would be an 18.5 x 22.5 x 2.5, for a total of 1040 cu in.  =
Unfortunately,
the larger core would be pushing the limits of my cowl size.  I'll have =
to
give a bit more thought to this.

Thanks,
Rusty
=20