----- 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"?