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On Sun, Oct 22, 2023 at 6:04=E2=80=AFPM <johnbmacartney@gmx.com> wrote:
The only time I used a FACET fuel pump it failed on me after about 13,000
> miles in the middle of a major junction in Vancouver in the rush hour!
>
And I know why. The pump was mounted in the stock location. After a year
or so, I had to prime the pump every spring. In Colorado, the thing
refused to work properly. I drove the Suburban from Brekenridge to Frisco
to buy another one. That worked for a while. I finally woke up to
remember that when I put a low-pressure FACET in my Europa, the
instructions said the pump should be placed lower than the level of the
gasoline. At a Minnesota Triumphs tech session, we repositioned the pump
to the lowest place practical; bolted to the floor of the spare-tire
compartment against the front of the compartment, close to the fuel tank
where it did not interfere with the spare tire. Not a bit of trouble for
over a decade. Kicking myself that I did not remember that part of the
factory instructions from so long ago.
> I think this was because it wanted to operate at around 8psi when the
> carbs only needed 2 to 3 psi and therefore a restrictor had to be put in
> the delivery line.
>
FACET made these pumps in two pressure ranges. I made sure to get the
low-pressure variety. The Europa came to me with a huge AC fuel pump inline
with a pressure regulator. The pressure was set too high for the liking of
the 45MM side-draft Weber carb, so I turned down the pressure with the knob
on the regulator until the Weber behaved. In my ignorance, I did not
realize that turning down the pressure turned down the flow rate. This
came to my attention at a Corvettes Of Minnesota two-lap autocross. There
was a left-hand sweeper on the course which I drove well on the first lap
of the run, but exiting the same turn on the second lap the car swapped
ends and the engine died. The exact same thing happened on the second
run. For my third run, I resolved to go light on this turn on the second
lap to learn what I was doing wrong. The Lotus engine cut out just after
the turn. I had not spun the car and killed the engine. The engine died
when the float chamber emptied and spun the car. I tossed the AC pump and
regulator in the bin and installed a low-pressure FACET, properly as low on
the car as possible and preceded by a filter, and had no problems
thereafter.
> I wasn=E2=80=99t aware Lucas made a fuel pump - apart from the ones for t=
he fuel
> injected cars -
>
Dick O'Kane wrote about Lucas pumps long before fuel injection was a thing
in common British cars. These pumps were installed inside the fuel tank.
O'Kane wrote that if you ever put too-large a fuse in a circuit for a
Lucas fuel pump you could have a "truly epic fire".
Phil Ethier
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<div dir=3D"ltr"><div dir=3D"ltr"><div class=3D"gmail_default" style=3D"fon=
t-family:monospace"><br></div></div><br><div class=3D"gmail_quote"><div dir=
=3D"ltr" class=3D"gmail_attr">On Sun, Oct 22, 2023 at 6:04=E2=80=AFPM <<=
a href=3D"mailto:johnbmacartney@gmx.com";>johnbmacartney@gmx.com</a>> wro=
te:<br></div><div dir=3D"ltr" class=3D"gmail_attr"><br></div><blockquote cl=
ass=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid=
rgb(204,204,204);padding-left:1ex"><div class=3D"msg-918802425644519261"><=
div lang=3D"EN-GB" style=3D"overflow-wrap: break-word;"><div class=3D"m_-91=
8802425644519261WordSection1"><p class=3D"MsoNormal">The only time I used a=
FACET fuel pump it failed on me after about 13,000 miles in the middle of =
a major junction in Vancouver in the rush hour! </p></div></div></div></blo=
ckquote><div><br></div><div><div class=3D"gmail_default" style=3D"font-fami=
ly:monospace">And I know why.=C2=A0 The pump was mounted in the stock locat=
ion.=C2=A0 After a year or so, I had to prime the pump every spring.=C2=A0 =
In Colorado, the thing refused to work properly.=C2=A0 I drove the Suburban=
from Brekenridge to Frisco to buy another one.=C2=A0 That worked for a whi=
le.=C2=A0 I finally woke up to remember that when I put a low-pressure FACE=
T=C2=A0in my Europa, the instructions said the pump should be placed lower =
than the level of the gasoline.=C2=A0 =C2=A0At a Minnesota Triumphs tech se=
ssion, we repositioned the pump to the lowest=C2=A0place practical; bolted =
to the floor of the spare-tire compartment against the front of the compart=
ment, close to the fuel tank where it did not interfere with=C2=A0the spare=
tire.=C2=A0 Not a bit of trouble for over a decade.=C2=A0 Kicking myself t=
hat I did not remember that part of the factory instructions from so long a=
go.</div></div><div>=C2=A0</div><blockquote class=3D"gmail_quote" style=3D"=
margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-lef=
t:1ex"><div class=3D"msg-918802425644519261"><div lang=3D"EN-GB" style=3D"o=
verflow-wrap: break-word;"><div class=3D"m_-918802425644519261WordSection1"=
><p class=3D"MsoNormal">I think this was because it wanted to operate at ar=
ound 8psi when the carbs only needed 2 to 3 psi and therefore a restrictor =
had to be put in the delivery line.</p></div></div></div></blockquote><div>=
<br></div><div><div class=3D"gmail_default" style=3D"font-family:monospace"=
>FACET made these pumps in two pressure ranges.=C2=A0 I made sure to get th=
e low-pressure variety. The Europa came to me with a huge AC fuel pump inli=
ne with a pressure regulator.=C2=A0 The pressure was set too high for the l=
iking of the=C2=A045MM side-draft Weber carb, so I turned down the pressure=
with the knob on the regulator until the Weber behaved.=C2=A0 In my ignora=
nce, I did not realize that turning down the pressure turned down the flow =
rate.=C2=A0 This came to my attention at a Corvettes Of Minnesota two-lap a=
utocross.=C2=A0 There was a left-hand sweeper on the course which I drove w=
ell on the first lap of the run, but exiting=C2=A0the same turn on the seco=
nd lap the car swapped ends and the engine died.=C2=A0 The exact same thing=
happened on the second run.=C2=A0 For my third run, I resolved=C2=A0to go =
light on this turn on the second lap to=C2=A0learn what I was doing wrong.=
=C2=A0 The Lotus engine cut out just after the turn.=C2=A0 I had not spun t=
he car and killed the engine.=C2=A0 The engine died when the float chamber =
emptied and=C2=A0spun the=C2=A0car.=C2=A0 I tossed the AC pump and regulato=
r in the bin and installed a low-pressure FACET, properly as low on the car=
as possible and preceded by a filter, and had no problems thereafter.</div=
></div><div>=C2=A0</div><blockquote class=3D"gmail_quote" style=3D"margin:0=
px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><=
div class=3D"msg-918802425644519261"><div lang=3D"EN-GB" style=3D"overflow-=
wrap: break-word;"><div class=3D"m_-918802425644519261WordSection1"><p clas=
s=3D"MsoNormal"><u></u><u></u></p><p class=3D"MsoNormal">I wasn=E2=80=99t a=
ware Lucas made a fuel pump - apart from the ones for the fuel injected car=
s -</p></div></div></div></blockquote><div><br></div><div><div class=3D"gma=
il_default" style=3D"font-family:monospace">Dick O'Kane wrote about Luc=
as pumps long before fuel injection was a thing in common British cars.=C2=
=A0 These pumps were installed inside the fuel tank.=C2=A0 =C2=A0O'Kane=
wrote that if you ever put too-large a fuse in a circuit for a Lucas fuel =
pump you could have a "truly epic fire".</div><div class=3D"gmail=
_default" style=3D"font-family:monospace"><br></div><div class=3D"gmail_def=
ault" style=3D"font-family:monospace">Phil Ethier</div></div><div class=3D"=
gmail_default" style=3D"font-family:monospace"><br></div><div class=3D"gmai=
l_default" style=3D"font-family:monospace"><br></div></div></div>
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