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Gary
I looked through my info and I could not find guidance as to the max pressu=
re for the float chamber valve to stay seated. That is the only place that =
the pressure should or would matter. The fuel bowl is not pressurized so th=
e carb jet flow is determined by fuel level in the bowl and velocity of the=
air flow passed the jet. The float pushes the needle against the seat and=
I=E2=80=99m concluding that has to be higher than the max fuel pressure ma=
de by the fuel pump, as Kees mentioned, 3.8 PSI. I was about to try and fig=
ure the size of the float, leverage of the float arm, etc in order to calcu=
late the pressure at the needle and seat but a little voice suggested that =
I not venture down that path=E2=80=A6.
Perry
Sent from Mail for Windows 10
From: warthodson--- via Healeys
Sent: Sunday, June 14, 2020 12:28 PM
To: healeys@autox.team.net
Subject: [Healeys] SU carb fuel pressure
What is the Max recommended fuel pressure (psi) for SU HS 6=C2=A0 Carbs. Is=
there=C2=A0 also a Min fuel pressure?=20
Gary Hodson
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--></style></head><body lang=3DEN-US link=3Dblue vlink=3D"#954F72"><div cla=
ss=3DWordSection1><p class=3DMsoNormal>Gary</p><p class=3DMsoNormal>I looke=
d through my info and I could not find guidance as to the max pressure for =
the float chamber valve to stay seated. That is the only place that the pre=
ssure should or would matter. The fuel bowl is not pressurized so the carb =
jet flow is determined by fuel level in the bowl and velocity of the air fl=
ow passed the jet.=C2=A0 The float pushes the needle against the seat and I=
=E2=80=99m concluding that has to be higher than the max fuel pressure made=
by the fuel pump, as Kees mentioned, 3.8 PSI. I was about to try and figur=
e the size of the float, leverage of the float arm, etc in order to calcula=
te the pressure at the needle and seat but a little voice suggested that I =
not venture down that path=E2=80=A6.</p><p class=3DMsoNormal>Perry</p><p cl=
ass=3DMsoNormal><o:p> </o:p></p><p class=3DMsoNormal>Sent from <a href=
=3D"https://go.microsoft.com/fwlink/?LinkId=3D550986";>Mail</a> for Windows =
10</p><p class=3DMsoNormal><o:p> </o:p></p><div style=3D'mso-element:p=
ara-border-div;border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in=
0in 0in'><p class=3DMsoNormal style=3D'border:none;padding:0in'><b>From: <=
/b><a href=3D"mailto:healeys@autox.team.net";>warthodson--- via Healeys</a><=
br><b>Sent: </b>Sunday, June 14, 2020 12:28 PM<br><b>To: </b><a href=3D"mai=
lto:healeys@autox.team.net">healeys@autox.team.net</a><br><b>Subject: </b>[=
Healeys] SU carb fuel pressure</p></div><p class=3DMsoNormal><o:p> </o=
:p></p><div><p class=3DMsoNormal><span style=3D'font-size:12.0pt;font-famil=
y:"Comic Sans MS";color:black'>What is the Max recommended fuel pressure (p=
si) for SU HS 6 Carbs. Is there also a Min fuel pressure? <o:p>=
</o:p></span></p></div><p class=3DMsoNormal><span style=3D'font-size:12.0pt=
;font-family:"Comic Sans MS";color:black'>Gary Hodson<o:p></o:p></span></p>=
<p class=3DMsoNormal><o:p> </o:p></p></div></body></html>=
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