Jeff,

In the 1986 RX7 car that donated my engine, the heater supply line went from
the rear iron to the heater core and control valve.  The return line went
from the heater core to a connection at the bottom of the radiator.

Steve Boese


-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of Jeff Whaley
Sent: Wednesday, September 20, 2006 2:16 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] New Subscribe ... Heater Core Plumbing


Hello Readers, I'm a new subscribe. I've been reader the archive for a
couple months now.

What's my story?
Well I have a Wag-Aero 2+2 which originally flew with a 3.8L Ford V6; got
about 20 hours out of the engine and 3.5 flight hours before experiencing
engine misfires ... turned out to be a broken valve keeper which caused the
rocker arm to chip a piece from the head. I loved the Ford but due to its
excessive weight decided to rebuild an inherited Mazda 13B engine instead.

The rebuilt engine has been running on stand with EC2 and RD-1C. Engine is
now hanging on the airframe and I'm rewiring everything for final
installation.

I have a question related to the original Mazda heater core configuration:
How was it connected? There is a 5/8 or 3/4 water connection on the rear
iron but there is no mating connection anywhere. The water pump has a small
3/8 connection that feeds into the original intake system. Was there a "Y"
in the water pump outlet to radiator or what?

Jeff Whaley




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