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Hi Bob -
I learned a little something this time, what was on there was a ford style
valve seal (see https://www.summitracing.com/parts/edl-9725). I was
confused because the parts book shows something called a "valve shroud"
(item 49 here
https://mossmotors.com/austin-healey-100-100-6-3000/engine-performance/cylinder-head/cylinder-head-100-4)
but I now understand this is something completely different than what I
took off my car. This original "shroud" is NLA.
Ultimately the A90 is low compression/low power/single valve spring so I'm
not really too concerned to get it all perfectly set up. I just replaced
the little o ring seal and put the valve back together - good enough for
government work - I don't mind a little blue smoke when I start it... makes
me feel like I'm firing up the wright cyclone as I'm heading out in my SBD
looking for the Akagi.
The main thing is the valve has been lapped and seated properly. Head is
easy enough to pull so if I have to do it again, it's not a big deal. If
I'm motivated I might put the ford type seals on the car... meh?
Best,
Alan
On Tue, Feb 23, 2021 at 12:09 AM Bob Spidell <bspidell@comcast.net> wrote:
> That thought crossed my mind. I use silicone grease to lube oil filter
> gaskets, and putting silicone dielectric grease in our ancient electrical
> connectors--my dad's Model As used the same type--seems to help prevent
> some of the Lucas gremlins. I use a silicone 'oil' where light lubrication
> is needed and dirt and dust can build up (speedo cables and Bendix gears on
> starters come to mind).
>
> I'm taking the '50 to 75' years 'spec' with a grain of sodium chloride;
> cars of that era were designed and built to last for only a few years
> before being traded-in or scrapped, but my BJ8 has over 205K miles and is
> going strong (but shows her age).
>
> So, Alan, what did you decide?
>
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Content-Transfer-Encoding: quoted-printable
<div dir=3D"ltr"><div dir=3D"ltr">Hi Bob -<div><br></div><div>I learned a l=
ittle something this time, what was on there was a ford style valve seal (s=
ee=C2=A0<a href=3D"https://www.summitracing.com/parts/edl-9725";>https://www=
.summitracing.com/parts/edl-9725</a>).=C2=A0 =C2=A0I was confused because t=
he parts book shows something called a "valve shroud"=C2=A0 (item=
49 here=C2=A0<a href=3D"https://mossmotors.com/austin-healey-100-100-6-300=
0/engine-performance/cylinder-head/cylinder-head-100-4">https://mossmotors.=
com/austin-healey-100-100-6-3000/engine-performance/cylinder-head/cylinder-=
head-100-4</a>) but I now understand this is something completely different=
than what I took off my car.=C2=A0 This original "shroud" is NLA=
.</div><div><br></div><div>Ultimately the A90 is low compression/low power/=
single valve spring so I'm not really too concerned to get it all perfe=
ctly set up.=C2=A0 I just replaced the little o ring seal and put the valve=
back together - good enough for government work - I don't mind a littl=
e blue smoke when I start it... makes me feel like=C2=A0I'm firing up t=
he wright cyclone as I'm heading out in my SBD looking for the Akagi.=
=C2=A0=C2=A0</div><div><br></div><div>The main thing is the valve has been =
lapped and seated=C2=A0properly.=C2=A0 Head is easy enough to pull so if I =
have to do it again, it's not a big deal.=C2=A0 If I'm motivated I =
might put the ford type seals on the car... meh?</div><div><br></div><div>B=
est,</div><div><br></div><div>Alan</div></div><br><div class=3D"gmail_quote=
"><div dir=3D"ltr" class=3D"gmail_attr">On Tue, Feb 23, 2021 at 12:09 AM Bo=
b Spidell <<a href=3D"mailto:bspidell@comcast.net";>bspidell@comcast.net<=
/a>> wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0=
px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
=20
=20
=20
<div>
That thought crossed my mind. I use silicone grease to lube oil
filter gaskets, and putting silicone dielectric grease in our
ancient electrical connectors--my dad's Model As used the same
type--seems to help prevent some of the Lucas gremlins. I use a
silicone 'oil' where light lubrication is needed and dirt and d=
ust
can build up (speedo cables and Bendix gears on starters come to
mind).<br>
<br>
I'm taking the '50 to 75' years 'spec' with a grain=
of sodium
chloride; cars of that era were designed and built to last for only
a few years before being traded-in or scrapped, but my BJ8 has over
205K miles and is going strong (but shows her age).<br>
<br>
So, Alan, what did you decide?<br></div>
</blockquote></div></div>
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