--===============3288686596913881467==
--000000000000036c3405bbddac41
In the string about rubber valve seal shrouds Bob Spidell said: "By no
means let crumbling rubber parts see the inside of an engine."
About a year back I dropped the oil pan on my 100 to replace the oil pump
and found numerous chunks of what seemed like very hard black plastic
distributed throughout the sump. This was a head scratcher as I knew there
could be no plastic in the engine's interior yet there it was. After
thinking about it further I decided that it could only have been the
remains of the rubber timing chain tensioner and sure enough when I pulled
the front cover I saw that the tensioner was non-existent and the chain
pretty loose. I replaced the chain and tensioner--not an easy job--and
magically a chattering sound that had been appearing at certain
rpm's disappeared, no doubt a harmonic rattling of the loose timing chain.
Best--Michael Oritt
On Sun, Feb 21, 2021 at 12:17 PM Bob Spidell <bspidell@comcast.net> wrote:
> Most mechanics favor modern 'top hat' style seals--I think they're one
> piece--unless, of course, Concours Gold requires blue smoke from the
> tailpipe.
>
> By no means let crumbling rubber parts see the inside of an engine.
>
> Bob
>
>
> On 2/20/2021 9:28 PM, Alan Seigrist via Healeys wrote:
> > All -
> >
> > On my A90 I am lapping one of the exhaust valves and this seal came
> > off the upper part of the valve guide.
> >
> > It seems this is an original style valve seal shroud which no one
> > sells. I assume the best thing is to remove it and chuck it,
> > correct? It's already half disintegrated and I'm not really worried
> > but would prefer to not put it back on and have old rubber parts
> > getting into the oil.
> >
> > Am I correct to not put it back on? No one seems to sell these.
> >
> > Best,
> >
> > Alan
> >
> >
>
> _______________________________________________
> Support Team.Net http://www.team.net/donate.html
> Suggested annual donation $12.75
>
> Archive: http://www.team.net/pipermail/healeys
> http://autox.team.net/archive
>
> Healeys@autox.team.net
> http://autox.team.net/mailman/listinfo/healeys
>
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/healeys/michael.oritt@gmail.com
>
>
--000000000000036c3405bbddac41
Content-Transfer-Encoding: quoted-printable
<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"color:#3333ff">In th=
e string about rubber valve seal shrouds Bob Spidell said:=C2=A0 "By n=
o means let crumbling rubber parts see the inside of an engine."</div>=
<div class=3D"gmail_default" style=3D"color:#3333ff"><br></div><div class=
=3D"gmail_default" style=3D"color:#3333ff">About a year back I dropped the =
oil pan on my 100 to replace the oil pump and found numerous chunks of what=
seemed like very hard black plastic distributed throughout the sump.=C2=A0=
This was a head scratcher as I knew there could be no plastic in the engin=
e's interior yet there it was.=C2=A0 After thinking=C2=A0about it furth=
er I decided that it could only have been the remains of the rubber timing =
chain tensioner and sure enough when I pulled the front cover I saw that th=
e tensioner was non-existent=C2=A0and the chain pretty loose.=C2=A0 I repla=
ced the chain and tensioner--not an easy job--and magically a chattering so=
und that had been=C2=A0appearing at certain rpm's=C2=A0disappeared, no =
doubt a harmonic rattling of the loose timing chain.</div><div class=3D"gma=
il_default" style=3D"color:#3333ff"><br></div><div class=3D"gmail_default" =
style=3D"color:#3333ff">Best--Michael Oritt</div></div><br><div class=3D"gm=
ail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Sun, Feb 21, 2021 at 12=
:17 PM Bob Spidell <<a href=3D"mailto:bspidell@comcast.net";>bspidell@com=
cast.net</a>> 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-le=
ft:1ex">Most mechanics favor modern 'top hat' style seals--I think =
they're one <br>
piece--unless, of course, Concours Gold requires blue smoke from the <br>
tailpipe.<br>
<br>
By no means let crumbling rubber parts see the inside of an engine.<br>
<br>
Bob<br>
<br>
<br>
On 2/20/2021 9:28 PM, Alan Seigrist via Healeys wrote:<br>
> All -<br>
><br>
> On my A90 I am lapping one of the exhaust valves and this seal came <b=
r>
> off the upper part of the valve guide.<br>
><br>
> It seems this is an original style valve seal shroud which no one <br>
> sells.=C2=A0 I assume the best thing is to remove it and chuck it, <br=
>
> correct?=C2=A0 It's already half disintegrated and I'm not rea=
lly worried <br>
> but would prefer to not=C2=A0 put it back on and have old rubber parts=
<br>
> getting into the oil.<br>
><br>
> Am I correct to=C2=A0not put it back on?=C2=A0 No one seems to sell th=
ese.<br>
><br>
> Best,<br>
><br>
> Alan<br>
><br>
><br>
<br>
_______________________________________________<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" rel=3D"noreferrer" target=3D"_blank">http://a=
utox.team.net/archive</a><br>
<br>
<a href=3D"mailto:Healeys@autox.team.net"; target=3D"_blank">Healeys@autox.t=
eam.net</a><br>
<a href=3D"http://autox.team.net/mailman/listinfo/healeys"; rel=3D"noreferre=
r" target=3D"_blank">http://autox.team.net/mailman/listinfo/healeys</a><br>
<br>
s/michael.oritt@gmail.com" rel=3D"noreferrer" target=3D"_blank">http://auto=
x.team.net/mailman/options/healeys/michael.oritt@gmail.com</a><br>
<br>
</blockquote></div>
--000000000000036c3405bbddac41--
--===============3288686596913881467==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
_______________________________________________
Archive: http://www.team.net/pipermail/healeys http://autox.team.net/archive
Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys
--===============3288686596913881467==--
|