Re: [Healeys] OIL PRESSURE

[Harold Manifold <manifold@telus.net>]

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Hi Carl and Gerry,

The oil pressure might be a bit low once the oil gets hot.

What grade of oil are you currently using? The cold start pressures you
mentioned sound perfectly normal, which indicates that your oil pump and
oil release valve are functioning correctly. Until the release valve opens,
the pressure is determined by the resistance within the oil distribution
system.

At low RPMs and with hot oil, wear on the rocker shaft could be a possible
cause for the pressure drop.

Best,
Harold


On Mon, Jul 21, 2025 at 11:27=E2=80=AFAM carl and gerry rubino via Healeys =
<
healeys@autox.team.net> wrote:

> COLD START 60 LBS. DRIVEE ACROSS TOWN 50, ON HIGHWAY 60, BACK IN TOWN
> DROPS TO 20 IN 3RD GEAAR, 30 IN SECOND GEAR,
>
> IS THIS S A PROOBLEM?
>
> NO OIL LEAKS ANYWHERE-DIPO STITICK SAYS "ok"
>
> 1957 BN-4
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<div dir=3D"ltr"><div>Hi Carl and Gerry,</div><div><br></div><div>The oil p=
ressure might be a bit low once the oil gets hot.</div><div><br></div><div>=
What grade of oil are you currently using? The cold start pressures you men=
tioned sound perfectly normal, which indicates that your oil pump and oil r=
elease valve are functioning correctly. Until the release valve opens, the =
pressure is determined by the resistance within the oil distribution system=
.</div><div><br></div><div>At low RPMs and with hot oil, wear on the rocker=
 shaft could be a possible cause for the pressure drop.</div><div><br></div=
><div>Best,</div><div>Harold</div><div><br></div></div><br><div class=3D"gm=
ail_quote gmail_quote_container"><div dir=3D"ltr" class=3D"gmail_attr">On M=
on, Jul 21, 2025 at 11:27=E2=80=AFAM carl and gerry rubino via Healeys &lt;=
<a href=3D"mailto:healeys@autox.team.net";>healeys@autox.team.net</a>&gt; wr=
ote:<br></div><blockquote class=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"msg1509972182052608583">



<div>COLD START 60 LBS. DRIVEE ACROSS TOWN 50, ON HIGHWAY 60, BACK IN TOWN =
DROPS TO 20 IN 3RD GEAAR, 30 IN SECOND GEAR,<div><br></div><div>IS THIS S A=
 PROOBLEM?</div><div><br></div><div>NO OIL LEAKS ANYWHERE-DIPO STITICK SAYS=
 &quot;ok&quot;</div><div><br></div><div>1957 BN-4</div></div>_____________=
__________________________________<br>
rer" target=3D"_blank">http://www.team.net/donate.html</a><br>
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Archive: <a href=3D"http://www.team.net/pipermail/healeys"; rel=3D"noreferre=
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ttp://autox.team.net/archive/healeys" rel=3D"noreferrer" target=3D"_blank">=
http://autox.team.net/archive/healeys</a><br>
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</div></blockquote></div>

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