Subject: [Healeys] Overdrive accumulator piston with rings

From: John Spaur via Healeys <[email-masked]>
Date: Wed, 21 Jun 2023 19:35:21 -0700

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I am replacing the accumulator housing, piston and rings. When I opened the
piston box, there was only one wide ring with two narrow rings. Shouldn't
there be two wide rings and four narrow to make up two ring sets for the
piston?

John Spaur

'62 BT7 

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link=3D"#0563C1" vlink=3D"#954F72"><div class=3DWordSection1><p =
class=3DMsoNormal>I am replacing the accumulator housing, piston and =
rings. When I opened the piston box, there was only one wide ring with =
two narrow rings. Shouldn&#8217;t there be two wide rings and four =
narrow to make up two ring sets for the piston?<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>John =
Spaur<o:p></o:p></p><p class=3DMsoNormal>&#8217;62 BT7 =
<o:p></o:p></p></div></body></html>
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From: Bob Spidell <[email-masked]>
Date: Thu, 22 Jun 2023 06:30:20 -0700

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I have the DWM 'uprated' accumulator set; the housing has an O-ring and 
the piston has four equally-sized metal rings. Don't recall any others, 
but don't think it was any different than the OEM one I took out.

Too late now, but had I known of it I might have bought the AH Spares 
version with O-ring(s?) on the piston instead of metal rings. The metal 
rings will score the accumulator bore eventually.

On 6/21/2023 7:35 PM, John Spaur via Healeys wrote:
>
> I am replacing the accumulator housing, piston and rings. When I 
> opened the piston box, there was only one wide ring with two narrow 
> rings. Shouldn’t there be two wide rings and four narrow to make up 
> two ring sets for the piston?
>
> John Spaur
>
> ’62 BT7
>
>

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    I have the DWM 'uprated' accumulator set; the housing has an O-ring
    and the piston has four equally-sized metal rings. Don't recall any
    others, but don't think it was any different than the OEM one I took
    out.<br>
    <br>
    Too late now, but had I known of it I might have bought the AH
    Spares version with O-ring(s?) on the piston instead of metal rings.
    The metal rings will score the accumulator bore eventually.<br>
    <br>
    <br>
    <br>
    <div class="moz-cite-prefix">On 6/21/2023 7:35 PM, John Spaur via
      Healeys wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:[email-masked]">
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      <div class="WordSection1">
        <p class="MsoNormal">I am replacing the accumulator housing,
          piston and rings. When I opened the piston box, there was only
          one wide ring with two narrow rings. Shouldn’t there be two
          wide rings and four narrow to make up two ring sets for the
          piston?<o:p></o:p></p>
        <p class="MsoNormal"><o:p> </o:p></p>
        <p class="MsoNormal">John Spaur<o:p></o:p></p>
        <p class="MsoNormal">’62 BT7 <o:p></o:p></p>
      </div>
      <br>
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[email-masked]

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From: Roger Grace <[email-masked]>
Date: Thu, 22 Jun 2023 08:01:57 -0700

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---------- Forwarded message ---------
From: Roger Grace <[email-masked]>
Date: Thu, Jun 22, 2023 at 8:01=E2=80=AFAM
Subject: Re: [Healeys] Overdrive accumulator piston with rings
To: Bob Spidell <[email-masked]>

Yes - IMO the O ring version one is much more durable. BTW it is slightly
larger diameter too so you have to replace the accumulator and piston as a
set. Every older OD that I have seen has scored accumulator and pistons ...
Also good idea to replace the main pressure spring as well if you are deep
into it. This will probably up the pressure too.
I get all my OD bits from OD Spares in Rugby UK =3D knowledgeable and helpf=
ul.
rg

On Thu, Jun 22, 2023 at 6:57=E2=80=AFAM Bob Spidell <[email-masked]> =
wrote:

> the piston has four equally-sized metal rings. Don't recall any others, b=
ut
> don't think it was any different than the OEM one I took out.
>
> I am replacing the accumulator housing, piston and rings. When I opened
> the piston box, there was only one wide ring with two narrow rings.
> Shouldn=E2=80=99t there be two wide rings and four narrow to make up two =
ring sets
> for the piston?
> =E2=80=9962 BT7
> Support Team.Net http://www.team.net/donate.html
> Suggested annual donation  $12.75
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> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/healeys/[email-masked]
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<div dir=3D"ltr"><br><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=
=3D"gmail_attr">---------- Forwarded message ---------<br>From: <b class=3D=
"gmail_sendername" dir=3D"auto">Roger Grace</b> <span dir=3D"auto">&lt;<a h=
ref=3D"mailto:[email-masked]">[email-masked]</a>&gt;</span><br>Date=
: Thu, Jun 22, 2023 at 8:01=E2=80=AFAM<br>Subject: Re: [Healeys] Overdrive =
accumulator piston with rings<br>To: Bob Spidell &lt;<a href=3D"mailto:bspi=
[email-masked]">[email-masked]</a>&gt;<br></div><br><br><div dir=3D=
"ltr"><div>Yes - IMO the O ring version one is much more durable. BTW it is=
 slightly larger diameter too so you have to replace the accumulator and pi=
ston as a set. Every older OD that I have seen has scored accumulator and p=
istons ... <br></div><div>Also good idea to replace the main pressure sprin=
g as well if you are deep into it. This will probably up the pressure too.<=
/div><div>I get all my OD bits from OD Spares in Rugby UK =3D knowledgeable=
 and helpful.</div><div>rg<br></div></div><br><div class=3D"gmail_quote"><d=
iv dir=3D"ltr" class=3D"gmail_attr">On Thu, Jun 22, 2023 at 6:57=E2=80=AFAM=
 Bob Spidell &lt;<a href=3D"mailto:[email-masked]" target=3D"_blank">=
[email-masked]</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quo=
te" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204=
);padding-left:1ex">
 =20
   =20
 =20
  <div>
    I have the DWM &#39;uprated&#39; accumulator set; the housing has an O-=
ring
    and the piston has four equally-sized metal rings. Don&#39;t recall any
    others, but don&#39;t think it was any different than the OEM one I too=
k
    out.<br>
    <br>
    Too late now, but had I known of it I might have bought the AH
    Spares version with O-ring(s?) on the piston instead of metal rings.
    The metal rings will score the accumulator bore eventually.<br>
    <br>
    <br>
    <br>
    <div>On 6/21/2023 7:35 PM, John Spaur via
      Healeys wrote:<br>
    </div>
    <blockquote type=3D"cite">
     =20
     =20
     =20
      <div>
        <p class=3D"MsoNormal">I am replacing the accumulator housing,
          piston and rings. When I opened the piston box, there was only
          one wide ring with two narrow rings. Shouldn=E2=80=99t there be t=
wo
          wide rings and four narrow to make up two ring sets for the
          piston?<u></u><u></u></p>
        <p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
        <p class=3D"MsoNormal">John Spaur<u></u><u></u></p>
        <p class=3D"MsoNormal">=E2=80=9962 BT7 <u></u><u></u></p>
      </div>
      <br>
    </blockquote>
    <br>
  </div>

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From: Michael Salter <[email-masked]>
Date: Thu, 22 Jun 2023 13:35:26 -0400

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Years ago I made an accumulator piston to use an O ring.
The result was an abject failure as tiny chunks of the O ring were sliced
off each time it passed over the pressure relief drillings in the housing.
Any clue as to how that has been overcome?

M

On Thu., Jun. 22, 2023, 9:41 a.m. Bob Spidell, <[email-masked]> wrote=

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

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<div dir=3D"auto">Years ago I made an accumulator piston to use an O ring.=
=C2=A0<div dir=3D"auto">The result was an abject failure as tiny chunks of =
the O ring were sliced off each time it passed over the pressure relief dri=
llings in the housing.</div><div dir=3D"auto">Any clue as to how that has b=
een overcome?</div><div dir=3D"auto"><br></div><div dir=3D"auto">M</div></d=
iv><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On =
Thu., Jun. 22, 2023, 9:41 a.m. Bob Spidell, &lt;<a href=3D"mailto:bspidell@=
comcast.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;padd=
ing-left:1ex">
 =20
   =20
 =20
  <div>
    I have the DWM &#39;uprated&#39; accumulator set; the housing has an O-=
ring
    and the piston has four equally-sized metal rings. Don&#39;t recall any
    others, but don&#39;t think it was any different than the OEM one I too=
k
    out.<br>
    <br>
    Too late now, but had I known of it I might have bought the AH
    Spares version with O-ring(s?) on the piston instead of metal rings.
    The metal rings will score the accumulator bore eventually.<br>
    <br>
    <br>
    <br>
    <div>On 6/21/2023 7:35 PM, John Spaur via
      Healeys wrote:<br>
    </div>
    <blockquote type=3D"cite">
     =20
     =20
     =20
      <div>
        <p class=3D"MsoNormal">I am replacing the accumulator housing,
          piston and rings. When I opened the piston box, there was only
          one wide ring with two narrow rings. Shouldn=E2=80=99t there be t=
wo
          wide rings and four narrow to make up two ring sets for the
          piston?<u></u><u></u></p>
        <p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
        <p class=3D"MsoNormal">John Spaur<u></u><u></u></p>
        <p class=3D"MsoNormal">=E2=80=9962 BT7 <u></u><u></u></p>
      </div>
      <br>
    </blockquote>
    <br>
  </div>

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