Subject: Re: [Healeys] OIL PRESSURE

From: Harold Manifold <[email-masked]>
Date: Mon, 21 Jul 2025 12:48:13 -0700

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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 =
<
[email-masked]> 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:[email-masked]">[email-masked]</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>
<br>
Archive: <a href=3D"http://www.team.net/pipermail/healeys" rel=3D"noreferre=
r" target=3D"_blank">http://www.team.net/pipermail/healeys</a> <a href=3D"h=
ttp://autox.team.net/archive/healeys" rel=3D"noreferrer" target=3D"_blank">=
http://autox.team.net/archive/healeys</a><br>
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eam.net</a><br>
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</div></blockquote></div>

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From: Alan Seigrist <[email-masked]>
Date: Mon, 21 Jul 2025 16:55:48 -0400

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As long as you are around 20 psi it should be okay, but you may want to
consider replacing the oil pressure spring.  It's a pretty easy replacement
and you can do it in about 5 minutes.

what oil are you running?  You should be running 20W-50.

Alan

On Mon, Jul 21, 2025 at 2:33=E2=80=AFPM carl and gerry rubino via Healeys <
[email-masked]> wrote:

> http://autox.team.net/mailman/options/healeys/[email-masked]
>
>

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<div dir=3D"ltr">As long as you are around 20 psi it should be okay, but yo=
u may want to consider replacing the oil pressure spring.=C2=A0 It&#39;s a =
pretty easy replacement and you=C2=A0can do it in about 5 minutes.<br><br>w=
hat oil=C2=A0are you running?=C2=A0 You should be running 20W-50.<div><br><=
/div><div>Alan</div></div><br><div class=3D"gmail_quote gmail_quote_contain=
er"><div dir=3D"ltr" class=3D"gmail_attr">On Mon, Jul 21, 2025 at 2:33=E2=
=80=AFPM carl and gerry rubino via Healeys &lt;<a href=3D"mailto:healeys@au=
tox.team.net">[email-masked]</a>&gt; wrote:<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-7061277751002736412">

s/[email-masked]" rel=3D"noreferrer" target=3D"_blank">http://autox.t=
eam.net/mailman/options/healeys/[email-masked]</a><br>

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[email-masked]

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From: Al Fuller <[email-masked]>
Date: Mon, 21 Jul 2025 20:07:15 -0700

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Agreed. Rocker shaft wear is easy to check - just warm up the engine then
idle it with the rocker cover removed.

Proper function will have oil dribbling over the rockers, while worn shaft
will spurt oil into the air. One of my Healeys shot oil up to the bonnet
underside!

________________
Sent from my phone
Best Regards,
Al Fuller

On Mon, Jul 21, 2025, 12:57=E2=80=AFPM Harold Manifold <[email-masked]>=
 wrote:

> oil release valve are functioning correctly. Until the release valve open=
s,
> At low RPMs and with hot oil, wear on the rocker shaft could be a possibl=
e
> On Mon, Jul 21, 2025 at 11:27=E2=80=AFAM carl and gerry rubino via Healey=
s <
> http://autox.team.net/mailman/options/healeys/[email-masked]
>
>

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<div dir=3D"auto"><div>Agreed. Rocker shaft wear is easy to check - just wa=
rm up the engine then idle it with the rocker cover removed.=C2=A0</div><di=
v dir=3D"auto"><br></div><div dir=3D"auto">Proper function will have oil dr=
ibbling over the rockers, while worn shaft will spurt oil into the air. One=
 of my Healeys shot oil up to the bonnet underside!</div><div><br></div><di=
v data-smartmail=3D"gmail_signature">________________<br>Sent from my phone=
 <br>Best Regards,<br>Al Fuller</div></div><br><div class=3D"gmail_quote gm=
ail_quote_container"><div dir=3D"ltr" class=3D"gmail_attr">On Mon, Jul 21, =
2025, 12:57=E2=80=AFPM Harold Manifold &lt;<a href=3D"mailto:manifold@telus=
.net">[email-masked]</a>&gt; wrote:<br></div><blockquote class=3D"gmail=
_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:=
1ex"><div dir=3D"ltr"><div>Hi Carl and Gerry,</div><div><br></div><div>The =
oil pressure 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 yo=
u 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 s=
ystem.</div><div><br></div><div>At low RPMs and with hot oil, wear on the r=
ocker 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"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Mon, Jul 21, 2025=
 at 11:27=E2=80=AFAM carl and gerry rubino via Healeys &lt;<a href=3D"mailt=
o:[email-masked]" target=3D"_blank" rel=3D"noreferrer">healeys@auto=
x.team.net</a>&gt; wrote:<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>

<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 noreferrer" target=3D"_blank">http://www.team.net/donate.html</a><br>
<br>
Archive: <a href=3D"http://www.team.net/pipermail/healeys" rel=3D"noreferre=
r noreferrer" target=3D"_blank">http://www.team.net/pipermail/healeys</a> <=
a href=3D"http://autox.team.net/archive/healeys" rel=3D"noreferrer noreferr=
er" target=3D"_blank">http://autox.team.net/archive/healeys</a><br>
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