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Michael,
Thank you
Yes agree, unfortunately this is not how they have built them.
Spoken at length with the manufacturer BCC in the UK. Of course they =
have =E2=80=9Cnever had this problem before=E2=80=9D. Evidently this is =
a sort of generic calliper design and used on numerous similar (minor =
mods for each marque) classic cars - Jags, Morgans, Triumphs etc. Also =
spoke to Rawles who have installed several - also with no problems.
Anyhow, decided to try to eliminate the trapped air now that I =
understood the problem much better.
Concocted some bits together, such that with my air supply, was able to =
feed brake fluid (no air bubbles) at about 5-10 psi into an open bleed =
valve at each calliper. Then also cracked open the pipe connection on =
the inside and let some fluid escape. This must have got rid of the =
trapped air (not able to see as too many bits to manage) and the brake =
pedal is now right up where it should be. Phew what a saga ... !
Also after doing some digging about bleeding in general, there is a lot =
to be said for this =E2=80=9Creverse bleeding=E2=80=9D technique. It =
makes sense to try to force the air upwards instead of using fluid =
pressure downwards. I had not heard of it before and likely would have =
solved my issue. Lots of people swear by it and reverse bleeding kits =
are sold.=20
Many tkx
rg
From: Michael Salter=20
Sent: Monday, July 4, 2016 7:22 PM
To: Roger Grace=20
Cc: Andy Thorp ; Healey List=20
Subject: Re: [Healeys] BJ8 Brakes
Have to agree with Andy,
Although one cannot see exactly where the cross over pipe runs it =
"shuold run from the top of the first side to the bottom of the second =
side otherwise as Andy pointed out there would be no way to eliminate =
the air from the first (brake hose) side.
Michael S
On Sun, Jul 3, 2016 at 1:31 PM, Roger Grace <roggrace@telus.net> wrote:
Yes these are the beasts. Thanks for that Andy and to all for numerous
ideas.
Yes, and given all the bleeding have done it hopefully is the issue.
This morning I took 3/4 of a jam jar (almost a reservoir) of fluid out =
of
each wheel; minimal air came out using a vacuum pump.
Some minor improvement and pedal now about an inch from floor on first =
pump
and car is ... maybe driveable.
As I don't have a helper have to use this technique; it took but 10 =
mins to bleed when I recently changed out my booster; have also ordered =
some
Russell Speed Bleeders.
Not quite sure how to address this reverse bleeding procedure that =
Andy
suggests.
I have a vacuum pump that have been using to bleed with and it does =
not
involve any pedal pumping.
Was thinking of trying to suck from the booster bleeder, from each =
calliper in turn -
any thoughts ?
Tkx
rg
-----Original Message----- From: Andy Thorp
Sent: Sunday, July 3, 2016 2:51 AM
To: 'Healey List'
Subject: Re: [Healeys] BJ8 Brakes
If these are the calipers in question then the reason for the problem =
is
kind of obvious- there is no way of getting air out of one half as it =
has to
flow downwards, then across the bottom pipe and up the other side. Any =
air
stuck in the bores behind the pistons will stay trapped there. Reverse
bleeding should clear it if the internal drillings are done sensibly.
=
https://www.ahspares.co.uk/product-images/fullsize/10a937bf-2288-4027-a5e=
c-2e753aadac6f-3.jpg
Andy.
--------------------------------------------
On Sun, 3/7/16, Simon Lachlan <simon.lachlan@homecall.co.uk> wrote:
Subject: Re: [Healeys] BJ8 Brakes
To: "'Healey List'" <healeys@autox.team.net>, "'Roger Grace'"
<roggrace@telus.net>
Received: Sunday, 3 July, 2016, 8:17 PM
Bleeding brakes can drive you
crazy.See the attached, from my BMC
manual. It addresses the question rather neatly, suggesting
that air may be drawn in at the end of the downward push;
for example, the threads on the bleeders may be slightly
worn.The trick is to close the bleeder
100% before the downward stroke ie, most important, while
fluid is still coming out.A device such as A Gunson=E2=80=99s
Eezibleed will mange that OK.The pdf=E2=80=99s first line may seem a
little strange......it=E2=80=99s a note addressed to myself. The
relevant paragraph is not in my pdf version of the manual
for some reason so I added it as a reminder.Good luck,Simon
_______________________________________________
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-----
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2015.0.6201 / Virus Database: 4613/12545 - Release Date: =
07/02/16=20
_______________________________________________
Support Team.Net http://www.team.net/donate.html
Suggested annual donation $12.75
Archive: http://www.team.net/archive
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Healeys@autox.team.net
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Unsubscribe/Manage: =
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--=20
If you can't fix it with a hammer, you've got an electrical problem.
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2015.0.6201 / Virus Database: 4613/12558 - Release Date: =
07/04/16
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charset="utf-8"
Content-Transfer-Encoding: quoted-printable
<HTML><HEAD></HEAD>
<BODY dir=3Dltr>
<DIV dir=3Dltr>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Comic Sans MS'; COLOR: =
#000000">
<DIV=20
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
"Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; =
DISPLAY: inline'>
<DIV dir=3Dltr>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Comic Sans MS'; COLOR: =
#000000">
<DIV>Michael,</DIV>
<DIV>Thank you</DIV>
<DIV>Yes agree, unfortunately this is not how they have built =
them.</DIV>
<DIV>Spoken at length with the manufacturer BCC in the UK. Of course =
they have=20
=E2=80=9Cnever had this problem before=E2=80=9D. Evidently this is a =
sort of generic calliper=20
design and used on numerous similar (minor mods for each marque) classic =
cars -=20
Jags, Morgans, Triumphs etc. Also spoke to Rawles who have installed =
several -=20
also with no problems.</DIV>
<DIV> </DIV>
<DIV>Anyhow, decided to try to eliminate the trapped air now that I =
understood=20
the problem much better.</DIV>
<DIV>Concocted some bits together, such that with my air supply, was =
able to=20
feed brake fluid (no air bubbles) at about 5-10 psi into an open bleed =
valve at=20
each calliper. Then also cracked open the pipe connection on the inside =
and let=20
some fluid escape. This must have got rid of the trapped air (not able =
to see as=20
too many bits to manage) and the brake pedal is now right up where =
it=20
should be. Phew what a saga ... !</DIV>
<DIV> </DIV>
<DIV>Also after doing some digging about bleeding in general, there is a =
lot to=20
be said for this =E2=80=9Creverse bleeding=E2=80=9D technique. It makes =
sense to try to force=20
the air upwards instead of using fluid pressure downwards. I had not =
heard of it=20
before and likely would have solved my issue. Lots of people swear by it =
and=20
reverse bleeding kits are sold. </DIV>
<DIV> </DIV>
<DIV>Many tkx</DIV>
<DIV>rg</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>
<DIV=20
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
"Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; =
DISPLAY: inline'><FONT=20
size=3D3 face=3D"Comic Sans MS"></FONT></DIV>
<DIV style=3D"FONT: 10pt tahoma">
<DIV style=3D"BACKGROUND: #f5f5f5">
<DIV style=3D"font-color: black"><B>From:</B> <A =
title=3Dmichaelsalter@gmail.com=20
href=3D"mailto:michaelsalter@gmail.com";>Michael Salter</A> </DIV>
<DIV><B>Sent:</B> Monday, July 4, 2016 7:22 PM</DIV>
<DIV><B>To:</B> <A title=3Droggrace@telus.net=20
href=3D"mailto:roggrace@telus.net";>Roger Grace</A> </DIV>
<DIV><B>Cc:</B> <A title=3Dbce257@yahoo.co.nz=20
href=3D"mailto:bce257@yahoo.co.nz";>Andy Thorp</A> ; <A=20
title=3Dhealeys@autox.team.net =
href=3D"mailto:healeys@autox.team.net";>Healey=20
List</A> </DIV>
<DIV><B>Subject:</B> Re: [Healeys] BJ8 Brakes</DIV></DIV></DIV>
<DIV> </DIV></DIV>
<DIV=20
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
"Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; =
DISPLAY: inline'>
<DIV dir=3Dltr>
<DIV class=3Dgmail_default=20
style=3D"FONT-SIZE: small; FONT-FAMILY: comic sans ms,sans-serif">Have =
to agree=20
with Andy,<BR></DIV>
<DIV class=3Dgmail_default=20
style=3D"FONT-SIZE: small; FONT-FAMILY: comic sans =
ms,sans-serif">Although one=20
cannot see exactly where the cross over pipe runs it "shuold run from =
the top of=20
the first side to the bottom of the second side otherwise as Andy =
pointed out=20
there would be no way to eliminate the air from the first (brake hose)=20
side.<BR></DIV>
<DIV class=3Dgmail_default=20
style=3D"FONT-SIZE: small; FONT-FAMILY: comic sans =
ms,sans-serif">Michael=20
S<BR></DIV>
<DIV class=3Dgmail_default=20
style=3D"FONT-SIZE: small; FONT-FAMILY: comic sans =
ms,sans-serif"> </DIV></DIV>
<DIV class=3Dgmail_extra>
<DIV> </DIV>
<DIV class=3Dgmail_quote>On Sun, Jul 3, 2016 at 1:31 PM, Roger Grace =
<SPAN=20
dir=3Dltr><<A href=3D"mailto:roggrace@telus.net"=20
target=3D_blank>roggrace@telus.net</A>></SPAN> wrote:<BR>
<BLOCKQUOTE class=3Dgmail_quote=20
style=3D"PADDING-LEFT: 1ex; BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px =
0px 0.8ex">Yes=20
these are the beasts. Thanks for that Andy and to all for=20
numerous<BR>ideas.<BR>Yes, and given all the bleeding have done it =
hopefully=20
is the issue.<BR>This morning I took 3/4 of a jam jar (almost a =
reservoir) of=20
fluid out of<BR>each wheel; minimal air came out using a vacuum =
pump.<BR>Some=20
minor improvement and pedal now about an inch from floor on first =
pump<BR>and=20
car is ... maybe driveable.<BR>As I don't have a helper have to use =
this=20
technique; it took but 10 mins to bleed when I recently changed out my =
booster; have also ordered some<BR>Russell Speed Bleeders.<BR><BR>Not =
quite=20
sure how to address this reverse bleeding procedure that=20
Andy<BR>suggests.<BR>I have a vacuum pump that have been using to =
bleed with=20
and it does not<BR>involve any pedal pumping.<BR>Was thinking of =
trying to=20
suck from the booster bleeder, from each calliper in turn -<BR>any =
thoughts=20
?<BR><BR>Tkx<BR>rg<BR><BR><BR><BR>-----Original Message----- From: =
Andy=20
Thorp<BR>Sent: Sunday, July 3, 2016 2:51 AM<BR>To: 'Healey=20
List'<SPAN><BR>Subject: Re: [Healeys] BJ8 Brakes<BR><BR></SPAN>If =
these are=20
the calipers in question then the reason for the problem is<BR>kind of =
obvious- there is no way of getting air out of one half as it has =
to<BR>flow=20
downwards, then across the bottom pipe and up the other side. Any =
air<BR>stuck=20
in the bores behind the pistons will stay trapped there. =
Reverse<BR>bleeding=20
should clear it if the internal drillings are done sensibly.<BR><BR><A =
=
href=3D"https://www.ahspares.co.uk/product-images/fullsize/10a937bf-2288-=
4027-a5ec-2e753aadac6f-3.jpg"=20
rel=3Dnoreferrer=20
=
target=3D_blank>https://www.ahspares.co.uk/product-images/fullsize/10a937=
bf-2288-4027-a5ec-2e753aadac6f-3.jpg</A><BR><BR>Andy.<BR>----------------=
----------------------------<SPAN><BR>On=20
Sun, 3/7/16, Simon Lachlan <<A =
href=3D"mailto:simon.lachlan@homecall.co.uk"=20
target=3D_blank>simon.lachlan@homecall.co.uk</A>> =
wrote:<BR><BR>Subject: Re:=20
[Healeys] BJ8 Brakes<BR></SPAN>To: "'Healey List'" <<A=20
href=3D"mailto:healeys@autox.team.net"=20
target=3D_blank>healeys@autox.team.net</A>>, "'Roger =
Grace'"<BR><<A=20
href=3D"mailto:roggrace@telus.net"=20
target=3D_blank>roggrace@telus.net</A>><BR>Received: Sunday, 3 =
July, 2016,=20
8:17 PM<SPAN><BR><BR>Bleeding brakes can drive you<BR></SPAN>crazy.See =
the=20
attached, from my BMC<SPAN><BR>manual. It addresses the question =
rather=20
neatly, suggesting<BR>that air may be drawn in at the end of the =
downward=20
push;<BR>for example, the threads on the bleeders may be=20
slightly<BR></SPAN>worn.The trick is to close the =
bleeder<SPAN><BR>100% before=20
the downward stroke ie, most important, while<BR></SPAN>fluid is still =
coming=20
out.A device such as A Gunson=E2=80=99s<BR>Eezibleed will mange that =
OK.The pdf=E2=80=99s=20
first line may seem a<SPAN><BR>little strange......it=E2=80=99s a note =
addressed to=20
myself. The<BR>relevant paragraph is not in my pdf version of the=20
manual<BR>for some reason so I added it as a reminder.Good=20
=
luck,Simon<BR></SPAN><SPAN>______________________________________________=
_<BR>Support=20
Team.Net <A href=3D"http://www.team.net/donate.html"; rel=3Dnoreferrer=20
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=
target=3D_blank>http://autox.team.net/mailman/options/healeys/roggrace@te=
lus.net</A><SPAN><BR><BR><BR><BR>-----<BR>No=20
virus found in this message.<BR>Checked by AVG - <A =
href=3D"http://www.avg.com"=20
rel=3Dnoreferrer target=3D_blank>www.avg.com</A><BR></SPAN>Version: =
2015.0.6201 /=20
Virus Database: 4613/12545 - Release Date: 07/02/16 <BR>
<DIV class=3DHOEnZb>
<DIV =
class=3Dh5>_______________________________________________<BR>Support=20
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clear=3Dall><BR>-- <BR>
<DIV class=3Dgmail_signature data-smartmail=3D"gmail_signature">
<DIV dir=3Dltr>
<DIV>
<DIV dir=3Dltr><I><FONT size=3D2><SPAN style=3D"COLOR: black">If you =
can't fix it with=20
a hammer, you've got an electrical problem.</SPAN></FONT></I><BR><BR>
<DIV></DIV>
<DIV></DIV>
<DIV></DIV></DIV></DIV></DIV></DIV></DIV><A></A>
<P align=3Dleft color=3D"#000000" avgcert??>No virus found in this=20
message.<BR>Checked by AVG - <A=20
href=3D"http://www.avg.com";>www.avg.com</A><BR>Version: 2015.0.6201 / =
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Database: 4613/12558 - Release Date:=20
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