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Bill, for what its worth, I use two small 1/8"
hose on similar size tubes cast into the old N/A lower manifold. I am not
certain what Mazda used them for but, as far as I know there is no
manifold pressure take off near the Mazda throttle body. I have had
no problems - but I do take the pressure from two different primary intakes -
perhaps that doubles the frequency of pulsation and makes it more easily damped
by the air in the lines? Also my primary tubes are interconnected at the
throttle body mount.
Ed
----- Original Message -----
Sent: Tuesday, June 10, 2008 3:22
PM
Subject: [FlyRotary] Re: Sensors
Al,
My fuel pressure regulator (Airmotive) is getting its
MAP from the two small (1/8 “) tubes that lay in the primary ports on the
Renesis…Are you saying that I should move this pressure reference to someplace
else? You say you know it is not good…How do you know
this?
Bill B
From:
Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of Al Gietzen
Sent: Tuesday, June 10, 2008 3:39
PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re:
Sensors
Getting ready for plumbing,
initial wiring, gearing up for first start. Where is the best place to
locate a MAP sensor in a turbo 20B, in the air box, or closer to a port?
Are there any hard and fast rules about
this?
Greg
Ward
Greg;
Closer to the ports
gives you lots of pulses in the signal. I expect this is not good for
the ECU, and I know it is not good for the MAP referenced fuel pressure
regulator. The MAP sensing is close to the ports on my setup, and I had
to install signal damping. I don’t know your configuration, but if you
have a single TB feeding an air box, I’d put it in the air
box.
Al
G
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