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Bob etalContemplating the damper oil loss.=C2=A0 What is the path of the en=
gine vacuum that allows/causes the oil to disappear.=C2=A0If the engine is =
not running there is no vacuum, therefore no way for oil loss in an SU carb=
.Engine running, engine vacuum could potentially pull at carb parts interfa=
ce that control the oil reservoir at two locations,=C2=A0That being the fit=
of the damper plunger tip to the tube in the piston or the fit of the outs=
ide of the piston tube to the chamber.=C2=A0Suspect that oil loss is a resu=
lt of a poor fit at these locations.P
-----Original Message-----
From: Bob Spidell <bspidell@comcast.net>
To: Michael Salter <michaelsalter@gmail.com>
Cc: healeys@autox.team.net <healeys@autox.team.net>
Sent: Thu, Jun 17, 2021 11:16 pm
Subject: Re: [Healeys] HD8 Su's
Yeah ... I overfill a little and let them find their level.
=20
On 6/17/2021 9:34 AM, Michael Salter wrote:
=20
=20
Actually Bob even that is too much ... resistance just before the cap reach=
es the threads is sufficient.=C2=A0 At that level I find that the oil never=
goes away.=20
=20
=20
On Thu., Jun. 17, 2021, 10:34 a.m. Bob Spidell, <bspidell@comcast.net> wr=
ote:
=20
My observation as well. I fill them until you feel resistance when the ca=
p is about a half inch from the top of the carb.
=20
=20
On 6/16/2021 10:47 PM, Alan Seigrist via Healeys wrote:
=20
Roger -=20
you don't need that much oil in the HD8 pistons for this to work correctl=
y.=C2=A0 HD8s throw all excess oil out the vent... so if you are overfillin=
g it will all go out anyway.=20
The main thing to check is to take the dampers out and slide them back in=
with the shaft straight up, and if you feel resistance toward the bottom..=
.. you don't need to refill.=C2=A0 I suspect you are overthinking it.=C2=A0=
I used to think HD8s use too much oil until I realised they don't need all=
that much to work correctly.=20
Cheers,=20
Alan =20
On Thu, Jun 17, 2021 at 12:59 AM Roger Grace via Healeys <healeys@autox.t=
eam.net> wrote:
=20
Ok have spoken to Joe who was most helpful.
We did some measurements together over the phone and established that my =
dampers are correct. He says that he has encountered this before but not su=
re of the reason.
Suggests that I run the dashpots dry then start again. In meantime he wil=
l do more research. rg
=20
=20
=20
=20
=20
=20
=20
=20
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<div style=3D"color:black;font: 10pt Arial, Helvetica, sans-serif;">Bob eta=
l
<div>Contemplating the damper oil loss. What is the path of the engin=
e vacuum that allows/causes the oil to disappear. </div>
<div>If the engine is not running there is no vacuum, therefore no way for =
oil loss in an SU carb.</div>
<div>Engine running, engine vacuum could potentially pull at carb parts int=
erface that control the oil reservoir at two locations, </div>
<div>That being the fit of the damper plunger tip to the tube in the piston=
or the fit of the outside of the piston tube to the chamber. </div>
<div>Suspect that oil loss is a result of a poor fit at these locations.</d=
iv>
<div>P<br>
<br>
<div style=3D"font-family:arial,helvetica;font-size:10pt;color:black"><font=
size=3D"2">-----Original Message-----<br>
From: Bob Spidell <bspidell@comcast.net><br>
To: Michael Salter <michaelsalter@gmail.com><br>
Cc: healeys@autox.team.net <healeys@autox.team.net><br>
Sent: Thu, Jun 17, 2021 11:16 pm<br>
Subject: Re: [Healeys] HD8 Su's<br>
<br>
<div id=3D"yiv9259953231">
<div>
Yeah ... I overfill a little and let them find their level.<br clear=3D=
"none">
<br clear=3D"none">
=20
<div class=3D"yiv9259953231yqt2775323500" id=3D"yiv9259953231yqtfd17584">
<div class=3D"yiv9259953231moz-cite-prefix">On 6/17/2021 9:34 AM, Michael S=
alter
wrote:<br clear=3D"none">
</div>
<blockquote type=3D"cite">
</blockquote></div>
</div>
<div class=3D"yiv9259953231yqt2775323500" id=3D"yiv9259953231yqtfd65316">
<div>
<div>Actually Bob even that is too much ... resistance
just before the cap reaches the threads is sufficient. At tha=
t
level I find that the oil never goes away.
=20
<div><br clear=3D"none">
</div>
=20
<div><br clear=3D"none">
</div>
</div>
<br clear=3D"none">
=20
<div class=3D"yiv9259953231gmail_quote">
=20
<div class=3D"yiv9259953231gmail_attr" dir=3D"ltr">On Thu., Jun. 17, 2021, =
10:34
a.m. Bob Spidell, <<a rel=3D"nofollow noopener noreferrer" sha=
pe=3D"rect" ymailto=3D"mailto:bspidell@comcast.net"; target=3D"_blank" href=
=3D"mailto:bspidell@comcast.net";>bspidell@comcast.net</a>> wrote:<br cle=
ar=3D"none">
</div>
<blockquote class=3D"yiv9259953231gmail_quote" style=3D"margin:0 0 =
0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
=20
<div> My observation as well. I fill them until you feel
resistance when the cap is about a half inch from the top of
the carb.<br clear=3D"none">
<br clear=3D"none">
<br clear=3D"none">
=20
<div>On 6/16/2021 10:47 PM, Alan Seigrist via Healeys wrote:<br clear=3D"no=
ne">
</div>
<blockquote type=3D"cite">
=20
<div dir=3D"ltr">
=20
<div dir=3D"ltr">Roger -
=20
<div><br clear=3D"none">
</div>
=20
<div>you don't need that much oil in the HD8 pistons
for this to work correctly. HD8s throw all excess
oil out the vent... so if you are overfilling it
will all go out anyway.</div>
=20
<div><br clear=3D"none">
</div>
=20
<div>The main thing to check is to take the dampers
out and slide them back in with the shaft straight
up, and if you feel resistance toward the bottom....
you don't need to refill. I suspect you are
overthinking it. I used to think HD8s use too muc=
h
oil until I realised they don't need all that much
to work correctly.</div>
=20
<div><br clear=3D"none">
</div>
=20
<div>Cheers,</div>
=20
<div><br clear=3D"none">
</div>
=20
<div>Alan</div>
</div>
<br clear=3D"none">
=20
<div class=3D"yiv9259953231gmail_quote">
=20
<div class=3D"yiv9259953231gmail_attr" dir=3D"ltr">On Thu, Jun 17, 2021
at 12:59 AM Roger Grace via Healeys <<a rel=3D"nofol=
low noopener noreferrer" shape=3D"rect" ymailto=3D"mailto:healeys@autox.tea=
m.net" target=3D"_blank" href=3D"mailto:healeys@autox.team.net";>healeys@aut=
ox.team.net</a>>
wrote:<br clear=3D"none">
</div>
<blockquote class=3D"yiv9259953231gmail_quote" style=3D"m=
argin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left=
:1ex;">
=20
<div dir=3D"ltr">
=20
<div>Ok have spoken to Joe who was most helpful.<br clear=3D"none">
</div>
=20
<div>We did some measurements together over the
phone and established that my dampers are
correct.</div>
=20
<div>He says that he has encountered this before
but not sure of the reason.<br clear=3D"none">
</div>
=20
<div>Suggests that I run the dashpots dry then
start again.</div>
=20
<div>In meantime he will do more research.</div>
=20
<div>rg<br clear=3D"none">
</div>
</div>
=20
<div id=3D"yiv9259953231m_-1209655407184456216gmail-m_-7533876899210611790D=
AB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2"><br clear=3D"none">
</div>
</blockquote>
</div>
</div>
<br clear=3D"none">
</blockquote>
<br clear=3D"none">
</div>
<br clear=3D"none">
</blockquote>
</div>
=20
<br clear=3D"none">
</div>
</div>
</div>
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