----- Original Message -----
Sent: Tuesday, September 26, 2006 5:59 PM
Subject: RE: Constant Pressure Differential??
Ed,
In all cases where an
Aeromotive regulator is able to be referenced to intake manifold pressure, it
will affect fuel pressure on a 1:1 ratio with PSI, in both positive and negative
pressure situations, equally.
Vacuum is normally
measured in “HG (inches mercury) and you would have to convert to PSI by
dividing the “HG by 2.
This will ensure that
the delta across the injector of flow orifice will always be
maintained.
Hope this answers your
questions, good luck and thanks for choosing
Aeromotive!
Brett
Clow
Technical
Support
Aeromotive,
Inc.
7805 Barton
St.
Lenexa, KS 66214
913-647-7300 Ext.
109
From: Ed
Anderson [mailto:eanderson@carolina.rr.com]
Sent: Friday, September 22, 2006 1:55
PM
To:
tech@aeromotiveinc.com
Subject:
Constant Pressure Differential??
I notice that some of the
descriptions for your fuel pressure regulators that are manifold
referenced refers to "Vacuum/Boost" and others refer only to
"Boost".
Does this indicated that those
which described as "vacuum/boost" will cause the fuel pressure to vary in
order to maintain a constant pressure differential between the
fuel and the manifold pressure whether below 30 inch Hg or above 30"
Hg? Does the ones which are reference to only "Boost" indicate
that the regulator holds the line fuel pressure constant until the manifold
pressure goes above 30" Hg and then increases it to compensate for more fuel
needed in boost?
I am using an EFI that requires a
constant pressure differential between the
line fuel pressure and the manifold pressure for optimum performance. The
engine produces approx 200HP. Therefore, I need a fuel pressure regulator
which DOES vary line fuel pressure in order to maintain a constant pressure
differential
across the injector at manifold pressures below 30"
Hg. So do all your manifold referenced fuel pressure regulators do this OR
only those which are referenced to "vacuum" or
"vacuum/Boost"?