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Hi Bob,
Aluminium cylinders (wheel, slave, and master, clutch and brake) have the cy=
linder bore hard anodized to reduce wear.=20
Honing any aluminium cylinder removes the hard anodizing. The aluminium is v=
ery soft on its own, and wear is dramatic. Brake fluid turns black, and it l=
eaks.=20
The only way to "fix" a worn aluminium cylinder is to get it stainless steel=
sleeved. Then it will practically last forever.=20
Best
Chris
> On 3 May 2019, at 11:02 am, Bob Simmen <rsimmen@nc.rr.com> wrote:
>=20
> Out of curiosity, why should you never hone aluminum cylinder bores? What=
damage is done?
> Thanks in advance.
> Bob
> =20
> From: Healeys <healeys-bounces@autox.team.net> On Behalf Of Michael Salter=
> Sent: Thursday, May 2, 2019 7:39 PM
> To: Price Lindsay <050.rpl@gmail.com>
> Cc: Healey List <healeys@autox.team.net>
> Subject: Re: [Healeys] Corrosion on Clutch Master
> =20
> Hi Price you don't mention whether the corrosion is in the bore or on the o=
utside.=20
> Corrosion on the outside is usually as indication that there is a small le=
ak of brake fluid. On aluminum cylinders it produces a crusty white deposit=
which is usually easily cleaned off. The leak will be under the corrosion.=20=
> Corrosion in the bore is not so good but can often be corrected by rebuild=
ing the cylinder.=20
> NEVER hone aluminum cylinder bores ... the cylinder will be irreparably da=
maged.
> =20
> M
> =20
> On Thu, May 2, 2019, 6:18 PM R. Lindsay, <050.rpl@gmail.com> wrote:
> I have a small buildup of corrosion on the surface of my clutch master. A=
ny ideas on what could be causing this?
>=20
> Thank you so much for the help.
>=20
> Price Lindsay
>=20
> Sent from my iPad
> _______________________________________________
> Support Team.Net http://www.team.net/donate.html
> Suggested annual donation $12.75
>=20
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ve
>=20
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>=20
> Unsubscribe/Manage: http://autox.team.net/mailman/options/healeys/michaels=
alter@gmail.com
>=20
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>=20
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>=20
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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto"><div>Hi Bob,</div><div id=3D"AppleMailSigna=
ture">Aluminium cylinders (wheel, slave, and master, clutch and brake) have t=
he cylinder bore hard anodized to reduce wear. </div><div id=3D"AppleMa=
ilSignature">Honing any aluminium cylinder removes the hard anodizing. The a=
luminium is very soft on its own, and wear is dramatic. Brake fluid turns bl=
ack, and it leaks. </div><div id=3D"AppleMailSignature">The only way to=
"fix" a worn aluminium cylinder is to get it stainless steel sleeved. Then i=
t will practically last forever. </div><div id=3D"AppleMailSignature">B=
est</div><div id=3D"AppleMailSignature">Chris<br></div><div><br>On 3 May 201=
9, at 11:02 am, Bob Simmen <<a href=3D"mailto:rsimmen@nc.rr.com";>rsimmen@=
nc.rr.com</a>> wrote:<br><br></div><blockquote type=3D"cite"><div><meta h=
ttp-equiv=3D"Content-Type" content=3D"text/html; charset=3Dutf-8"><meta name=
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<o:idmap v:ext=3D"edit" data=3D"1" />
</o:shapelayout></xml><![endif]--><div class=3D"WordSection1"><p class=3D"Ms=
oNormal">Out of curiosity, why should you never hone aluminum cylinder bores=
? What damage is done?<o:p></o:p></p><p class=3D"MsoNormal">Thanks in a=
dvance.<o:p></o:p></p><p class=3D"MsoNormal">Bob<o:p></o:p></p><p class=3D"M=
soNormal"><o:p> </o:p></p><p class=3D"MsoNormal"><b>From:</b> Healeys &=
lt;<a href=3D"mailto:healeys-bounces@autox.team.net";>healeys-bounces@autox.t=
eam.net</a>> <b>On Behalf Of </b>Michael Salter<br><b>Sent:</b> Thursday,=
May 2, 2019 7:39 PM<br><b>To:</b> Price Lindsay <<a href=3D"mailto:050.r=
pl@gmail.com">050.rpl@gmail.com</a>><br><b>Cc:</b> Healey List <<a hre=
f=3D"mailto:healeys@autox.team.net";>healeys@autox.team.net</a>><br><b>Sub=
ject:</b> Re: [Healeys] Corrosion on Clutch Master<o:p></o:p></p><p class=3D=
"MsoNormal"><o:p> </o:p></p><div><p class=3D"MsoNormal">Hi Price you do=
n't mention whether the corrosion is in the bore or on the outside. <o:=
p></o:p></p><div><p class=3D"MsoNormal">Corrosion on the outside is usually a=
s indication that there is a small leak of brake fluid. On aluminum cy=
linders it produces a crusty white deposit which is usually easily cleaned o=
ff. The leak will be under the corrosion. <o:p></o:p></p></div><div><p c=
lass=3D"MsoNormal">Corrosion in the bore is not so good but can often be cor=
rected by rebuilding the cylinder. <o:p></o:p></p></div><div><p class=3D=
"MsoNormal">NEVER hone aluminum cylinder bores ... the cylinder will be irre=
parably damaged.<o:p></o:p></p></div><div><p class=3D"MsoNormal"><o:p> =
</o:p></p></div><div><p class=3D"MsoNormal">M<o:p></o:p></p></div></div><p c=
lass=3D"MsoNormal"><o:p> </o:p></p><div><div><p class=3D"MsoNormal">On T=
hu, May 2, 2019, 6:18 PM R. Lindsay, <<a href=3D"mailto:050.rpl@gmail.com=
">050.rpl@gmail.com</a>> wrote:<o:p></o:p></p></div><blockquote style=3D"=
border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin=
-left:4.8pt;margin-right:0in"><p class=3D"MsoNormal" style=3D"margin-bottom:=
12.0pt">I have a small buildup of corrosion on the surface of my clutch mast=
er. Any ideas on what could be causing this?<br><br>Thank you so much f=
or the help.<br><br>Price Lindsay<br><br>Sent from my iPad<br>______________=
_________________________________<br>Support <a href=3D"http://Team.Net";>Tea=
m.Net</a> <a href=3D"http://www.team.net/donate.html"; target=3D"_blank">http=
://www.team.net/donate.html</a><br>Suggested annual donation $12.75<br=
><br>Archive: <a href=3D"http://www.team.net/pipermail/healeys"; target=3D"_b=
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