|
|
It appears to me that the port on the rear iron is routed through the
throttle body and BAC valve, then to the port on the back of the water
pump, and as shown on the attached diagram the flow is into the pump at
that point. I've highlighted the path is red. I'm not sure I would
have picked that point to be an IN on the water pump, but that's what
is shown on Mazda's flow diagram. based on what's shown here, I don't
think keeping the hose low is necessary. (The flow path through the
throttle body is somewhat obscure, so I added the '?'.)
The water for the turbocharger cooling appears to come from the second
rotor somewhere, goes through the turbo and connects to a port on the
input side of the water pump. I have two water pump housings. One has
that fitting and the other does not, so I think the second housing was
from a NA engine. My engine is a hybrid with turbo irons and NA rotor
housings. The pump housing that came with it was the first one.
Bruce T. told me to connect the rear iron port to the water pump port
but to make sure it was disconnected during the first fill to allow air
to purge. It's not clear that that is necessary particularly if a
thermostat is not used. I did it anyway!
Bob W.
On Wed, 9 Sep 2009 14:50:38 -0800
"Al Gietzen" <ALVentures@cox.net> wrote:
>
> Kevin;
>
>
>
> Here's what I did with that port, which may also work for you. There is a
> similar port at the outlet of the water pump (I think common to all the
> turboed engines for turbo cooling). Use a high-pressure 3/8" hose and hose
> clamps, with a right-angle fitting that you can get at your auto parts
> store. Connect the rear iron port to the water pump port for bleeding the
> air from the rear iron during fillup. You want to keep that hose level and
> below the WP port so it doesn't trap the air. See Photo.
>
>
>
> You'll also note a blue AN fitting at the high point just past the hose
> connector from the pump outlet. It is an O-ring plug that I drilled in the
> center of the bottom; then out to the side just below the O-ring. Loosening
> that plug during filling allows air to bleed out. I made up a similar
> fitting with a schrader valve that I can screw in there for pressure-testing
> the system.
>
>
>
> Works well for me.
>
>
>
> Al G.
>
>
--
N93BD - Rotary Powered BD-4 - http://www.bob-white.com
3.8 Hours Total Time and holding
Cables for your rotary installation - http://roblinstores.com/
|
|