Subject: Re: [Roadsters] Brake Problem

From: Pat Horne via Datsun-roadsters <[email-masked]>
Date: Sat, 11 Jul 2020 20:30:12 -0500

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Please remind me, what year is the car?

How much lining is on the fronts?

How thick are the rotors?

If you compare the pedal pumping it with the parking brake on & off is there=
 much difference?

Calipers are expensive to replace/rebuild so I=E2=80=99d try cheaper stuff f=
irst. Worn out front pads or worn down rotors can cause the fronts to not wo=
rk. Pads are the cheapest but will also mask other problems if the real prob=
lem isn=E2=80=99t the pads =20

Peace,
Pat

Pat Horne=20
We support Habitat for Humanity

On Jul 11, 2020, at 8:18 PM, dave via Datsun-roadsters <datsun-roadsters@aut=
ox.team.net> wrote:

=EF=BB=BF
Some had advised me to find a gravel road and see what I could discover.
=20
Honestly there really are no gravel roads around here.
=20
I tried today pumping the pedal.  No difference
=20
But then I got it up to 40+, took it out of gear and stomped the brake pedal=
 with everything I had. The right rear pretty much stopped.  Did it again, a=
nd both rear wheels left some rubber.
=20
Clearly, as I had suspected, I have no front brakes.  But when I bleed the f=
luid flows on all four corners.
=20
So where is the best place to have the front rotors rebuilt???
________________________________________

[email-masked]

Archive: http://www.team.net/pipermail/datsun-roadsters http://autox.team.ne=
t/archive

Unsubscribe: http://autox.team.net/mailman/options/datsun-roadsters/patintex=
[email-masked]

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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">Please remind me, what year is the car?<div=
><br></div><div>How much lining is on the fronts?<div><br></div><div>How thi=
ck are the rotors?</div><div><br></div><div>If you compare the pedal pumping=
 it with the parking brake on &amp; off is there much difference?</div><div>=
<br></div><div>Calipers are expensive to replace/rebuild so I=E2=80=99d try c=
heaper stuff first. Worn out front pads or worn down rotors can cause the fr=
onts to not work. Pads are the cheapest but will also mask other problems if=
 the real problem isn=E2=80=99t the pads &nbsp;</div><div><br></div><div>Pea=
ce,</div><div>Pat<br><br><div dir=3D"ltr">Pat Horne&nbsp;<div>We support Hab=
itat for Humanity</div><div><br></div></div><div dir=3D"ltr"><br>On Jul 11, 2=
020, at 8:18 PM, dave via Datsun-roadsters &lt;[email-masked]=
et&gt; wrote:<br><br></div><div dir=3D"ltr">=EF=BB=BF<meta http-equiv=3D"Con=
tent-Type" content=3D"text/html; charset=3Dus-ascii"><meta name=3D"Generator=
" content=3D"Microsoft Word 15 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--><div class=3D"WordSection1"><p class=3D"Ms=
oNormal">Some had advised me to find a gravel road and see what I could disc=
over.<o:p></o:p></p><p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p><p class=3D"=
MsoNormal">Honestly there really are no gravel roads around here.<o:p></o:p>=
</p><p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p><p class=3D"MsoNormal">I tri=
ed today pumping the pedal.&nbsp; No difference<o:p></o:p></p><p class=3D"Ms=
oNormal"><o:p>&nbsp;</o:p></p><p class=3D"MsoNormal">But then I got it up to=
 40+, took it out of gear and stomped the brake pedal with everything I had.=
 The right rear pretty much stopped.&nbsp; Did it again, and both rear wheel=
s left some rubber.<o:p></o:p></p><p class=3D"MsoNormal"><o:p>&nbsp;</o:p></=
p><p class=3D"MsoNormal">Clearly, as I had suspected, I have no front brakes=
.&nbsp; But when I bleed the fluid flows on all four corners.<o:p></o:p></p>=
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p><p class=3D"MsoNormal">So where i=
s the best place to have the front rotors rebuilt???<o:p></o:p></p></div><sp=
an>________________________________________</span><br><span></span><br><span=
>[email-masked]</span><br><span></span><br><span>Donate: ht=
tp://www.team.net/donate.html</span><br><span>Archive: http://www.team.net/p=
ipermail/datsun-roadsters http://autox.team.net/archive</span><br><span></sp=
an><br><span>Unsubscribe: http://autox.team.net/mailman/options/datsun-roads=
ters/[email-masked]</span><br><span></span><br><span></span><br></div=
></div></div></body></html>=

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________________________________________

[email-masked]

Archive: http://www.team.net/pipermail/datsun-roadsters http://autox.team.net/archive

Unsubscribe: http://autox.team.net/mailman/options/datsun-roadsters/[email-masked]

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From: RWM via Datsun-roadsters <[email-masked]>
Date: Sat, 11 Jul 2020 21:38:19 -0400

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Mike the rotors, for thickness and runout, for sure, but even if the rotors a=
re thinner than minimum, there is more than enough extra meat on a new set o=
f pads to compensate.=20

- Bob Mann, '68 2000 Solex

> On Jul 11, 2020, at 21:32, Pat Horne via Datsun-roadsters <datsun-roadster=
[email-masked]> wrote:
>=20
> =EF=BB=BFPlease remind me, what year is the car?
>=20
> If you compare the pedal pumping it with the parking brake on & off is the=
re much difference?
>=20
> Calipers are expensive to replace/rebuild so I=E2=80=99d try cheaper stuff=
 first. Worn out front pads or worn down rotors can cause the fronts to not w=
ork. Pads are the cheapest but will also mask other problems if the real pro=
blem isn=E2=80=99t the pads =20
> On Jul 11, 2020, at 8:18 PM, dave via Datsun-roadsters <datsun-roadsters@a=
utox.team.net> wrote:
> But then I got it up to 40+, took it out of gear and stomped the brake ped=
al with everything I had. The right rear pretty much stopped.  Did it again,=
 and both rear wheels left some rubber.
> =20
> Clearly, as I had suspected, I have no front brakes.  But when I bleed the=
 fluid flows on all four corners.
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/pipermail/datsun-roadsters http://autox.team.=
net/archive
>=20
> Unsubscribe: http://autox.team.net/mailman/options/datsun-roadsters/patint=
[email-masked]
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/pipermail/datsun-roadsters http://autox.team.=
net/archive
>=20
> Unsubscribe: http://autox.team.net/mailman/options/datsun-roadsters/rwm@rw=
mann.com

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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">Mike the rotors, for thickness and runout, f=
or sure, but even if the rotors are thinner than minimum, there is more than=
 enough extra meat on a new set of pads to compensate.&nbsp;<br><br><div dir=
=3D"ltr">- Bob Mann, '68 2000 Solex</div><div dir=3D"ltr"><br><blockquote ty=
pe=3D"cite">On Jul 11, 2020, at 21:32, Pat Horne via Datsun-roadsters &lt;da=
[email-masked]&gt; wrote:<br><br></blockquote></div><blockquo=
te type=3D"cite"><div dir=3D"ltr">=EF=BB=BF<meta http-equiv=3D"content-type"=
 content=3D"text/html; charset=3Dutf-8">Please remind me, what year is the c=
ar?<div><br></div><div>How much lining is on the fronts?<div><br></div><div>=
How thick are the rotors?</div><div><br></div><div>If you compare the pedal p=
umping it with the parking brake on &amp; off is there much difference?</div=
><div><br></div><div>Calipers are expensive to replace/rebuild so I=E2=80=99=
d try cheaper stuff first. Worn out front pads or worn down rotors can cause=
 the fronts to not work. Pads are the cheapest but will also mask other prob=
lems if the real problem isn=E2=80=99t the pads &nbsp;</div><div><br></div><=
div>Peace,</div><div>Pat<br><br><div dir=3D"ltr">Pat Horne&nbsp;<div>We supp=
ort Habitat for Humanity</div><div><br></div></div><div dir=3D"ltr"><br>On J=
ul 11, 2020, at 8:18 PM, dave via Datsun-roadsters &lt;datsun-roadsters@auto=
x.team.net&gt; wrote:<br><br></div><div dir=3D"ltr">=EF=BB=BF<meta http-equi=
v=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii"><meta name=3D"G=
enerator" content=3D"Microsoft Word 15 (filtered medium)"><style><!--
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oNormal">Some had advised me to find a gravel road and see what I could disc=
over.<o:p></o:p></p><p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p><p class=3D"=
MsoNormal">Honestly there really are no gravel roads around here.<o:p></o:p>=
</p><p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p><p class=3D"MsoNormal">I tri=
ed today pumping the pedal.&nbsp; No difference<o:p></o:p></p><p class=3D"Ms=
oNormal"><o:p>&nbsp;</o:p></p><p class=3D"MsoNormal">But then I got it up to=
 40+, took it out of gear and stomped the brake pedal with everything I had.=
 The right rear pretty much stopped.&nbsp; Did it again, and both rear wheel=
s left some rubber.<o:p></o:p></p><p class=3D"MsoNormal"><o:p>&nbsp;</o:p></=
p><p class=3D"MsoNormal">Clearly, as I had suspected, I have no front brakes=
.&nbsp; But when I bleed the fluid flows on all four corners.<o:p></o:p></p>=
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p><p class=3D"MsoNormal">So where i=
s the best place to have the front rotors rebuilt???<o:p></o:p></p></div><sp=
an>________________________________________</span><br><span></span><br><span=
></div></div><span>________________________________________</span><br><span>=
</span><br><span>[email-masked]</span><br><span></span><br>=
<span>Donate: http://www.team.net/donate.html</span><br><span>Archive: http:=
//www.team.net/pipermail/datsun-roadsters http://autox.team.net/archive</spa=
n><br><span></span><br><span>Unsubscribe: http://autox.team.net/mailman/opti=
ons/datsun-roadsters/[email-masked]</span><br><span></span><br><span></span>=
<br></div></blockquote></body></html>=

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From: Pete Peters via Datsun-roadsters <[email-masked]>
Date: Sat, 11 Jul 2020 18:43:46 -0700

This is a multipart message in MIME format.

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You don't rebuild rotors; you replace them, but first you need to measure
the thickness to see if they're at or below minimum. From the 311s.org
TechWiki:

"New rotors are approximately .433" thick with a minimum thickness of.413"."

I don't recall if you said you replaced the front pads and when or not, or
how thick they are, or whether they're soaked in brake fluid, etc., etc.,
etc.

Have you removed the calipers to a) check the pads, and b) see if the
pistons are frozen? When I removed my wheels to investigate my lack of
braking power, I could easily tell my caliper pistons were frozen in the
retracted position. I definitely had rear brakes only. How could I tell?
Because the rotors had a nice, unmolested covering of rust instead of wear
where the pads press against the rotors. Your rotors may not be so obvious,
but you won't know until you check. Mine were also below minimum thickness;
way below, like .389"!!!! 

Sometimes the calipers can be rebuilt easily by you. The seal kit
(D1ABBM-73425) is about $50 from Nissan. If you cannot do them yourself, you
can consider sending them to White Post Restorations in Virginia or Karp's
Brake Service in California. Be aware that both vendors are backlogged
and/or slow to respond due to Covid-19.

You might also tell us where you're located. Perhaps another roadster owner
is nearby to help and/or advise.

Pete

From: Datsun-roadsters <[email-masked]> On Behalf
Of dave via Datsun-roadsters
Sent: Saturday, July 11, 2020 6:17 PM
To: [email-masked]
Subject: [Roadsters] Brake Problem

But then I got it up to 40+, took it out of gear and stomped the brake pedal
with everything I had. The right rear pretty much stopped.  Did it again,
and both rear wheels left some rubber.

Clearly, as I had suspected, I have no front brakes.  But when I bleed the
fluid flows on all four corners.

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link=3D"#0563C1" vlink=3D"#954F72"><div class=3DWordSection1><p =
class=3DMsoNormal>You don&#8217;t rebuild rotors; you replace them, but =
first you need to measure the thickness to see if they&#8217;re at or =
below minimum. From the 311s.org TechWiki:<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>&#8220;New =
rotors are approximately .433&quot; thick with a minimum thickness =
of.413&quot;.&#8221;<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>I =
don&#8217;t recall if you said you replaced the front pads and when or =
not, or how thick they are, or whether they&#8217;re soaked in brake =
fluid, etc., etc., etc.<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>Have you =
removed the calipers to a) check the pads, and b) see if the pistons are =
frozen? When I removed my wheels to investigate my lack of braking =
power, I could easily tell my caliper pistons were frozen in the =
retracted position. I definitely had rear brakes only. How could I tell? =
Because the rotors had a nice, unmolested covering of rust instead of =
wear where the pads press against the rotors. Your rotors may not be so =
obvious, but you won&#8217;t know until you check. Mine were also below =
minimum thickness; way below, like .389&#8221;!!!! <o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>Sometimes =
the calipers can be rebuilt easily by you. The seal kit (D1ABBM-73425) =
is about $50 from Nissan. If you cannot do them yourself, you can =
consider sending them to White Post Restorations in Virginia or =
Karp&#8217;s Brake Service in California. Be aware that both vendors are =
backlogged and/or slow to respond due to Covid-19.<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>You might =
also tell us where you&#8217;re located. Perhaps another roadster owner =
is nearby to help and/or advise.<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>Pete<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><div =
style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in'><p class=3DMsoNormal><b>From:</b> Datsun-roadsters =
&lt;[email-masked]&gt; <b>On Behalf Of </b>dave =
via Datsun-roadsters<br><b>Sent:</b> Saturday, July 11, 2020 6:17 =
PM<br><b>To:</b> [email-masked]<br><b>Subject:</b> =
[Roadsters] Brake Problem<o:p></o:p></p></div></div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>Some had =
advised me to find a gravel road and see what I could =
discover.<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>Honestly there really are no gravel roads around =
here.<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>I tried today pumping the pedal.&nbsp; No =
difference<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>But then I got it up to 40+, took it out of gear and =
stomped the brake pedal with everything I had. The right rear pretty =
much stopped.&nbsp; Did it again, and both rear wheels left some =
rubber.<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>Clearly, as I had suspected, I have no front =
brakes.&nbsp; But when I bleed the fluid flows on all four =
corners.<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>So where is the best place to have the front rotors =
rebuilt???<o:p></o:p></p></div></body></html>
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From: dave via Datsun-roadsters <[email-masked]>
Date: Sat, 11 Jul 2020 21:58:44 -0500

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Yes, I meant calipers.  

From: Datsun-roadsters <[email-masked]> On Behalf
Of Pete Peters via Datsun-roadsters
Sent: Saturday, July 11, 2020 8:44 PM
To: Datsun Roadsters <[email-masked]>
Subject: Re: [Roadsters] Brake Problem

Pete

From: Datsun-roadsters <[email-masked]
Datsun-roadsters
Sent: Saturday, July 11, 2020 6:17 PM

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link=3D"#0563C1" vlink=3D"#954F72"><div class=3DWordSection1><p =
class=3DMsoNormal>Yes, I meant calipers.&nbsp; <o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><div =
style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in'><p class=3DMsoNormal><b>From:</b> Datsun-roadsters =
&lt;[email-masked]&gt; <b>On Behalf Of </b>Pete =
Peters via Datsun-roadsters<br><b>Sent:</b> Saturday, July 11, 2020 8:44 =
PM<br><b>To:</b> Datsun Roadsters =
&lt;[email-masked]&gt;<br><b>Subject:</b> Re: =
[Roadsters] Brake Problem<o:p></o:p></p></div></div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>You =
don&#8217;t rebuild rotors; you replace them, but first you need to =
measure the thickness to see if they&#8217;re at or below minimum. From =
the 311s.org TechWiki:<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>&#8220;New =
rotors are approximately .433&quot; thick with a minimum thickness =
of.413&quot;.&#8221;<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>I =
don&#8217;t recall if you said you replaced the front pads and when or =
not, or how thick they are, or whether they&#8217;re soaked in brake =
fluid, etc., etc., etc.<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>Have you =
removed the calipers to a) check the pads, and b) see if the pistons are =
frozen? When I removed my wheels to investigate my lack of braking =
power, I could easily tell my caliper pistons were frozen in the =
retracted position. I definitely had rear brakes only. How could I tell? =
Because the rotors had a nice, unmolested covering of rust instead of =
wear where the pads press against the rotors. Your rotors may not be so =
obvious, but you won&#8217;t know until you check. Mine were also below =
minimum thickness; way below, like .389&#8221;!!!! <o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>Sometimes =
the calipers can be rebuilt easily by you. The seal kit (D1ABBM-73425) =
is about $50 from Nissan. If you cannot do them yourself, you can =
consider sending them to White Post Restorations in Virginia or =
Karp&#8217;s Brake Service in California. Be aware that both vendors are =
backlogged and/or slow to respond due to Covid-19.<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>You might =
also tell us where you&#8217;re located. Perhaps another roadster owner =
is nearby to help and/or advise.<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>Pete<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><div =
style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in'><p class=3DMsoNormal><b>From:</b> Datsun-roadsters &lt;<a =
href=3D"mailto:[email-masked]">datsun-roadsters-=
[email-masked]</a>&gt; <b>On Behalf Of </b>dave via =
Datsun-roadsters<br><b>Sent:</b> Saturday, July 11, 2020 6:17 =
PM<br><b>To:</b> <a =
href=3D"mailto:[email-masked]">[email-masked]=
am.net</a><br><b>Subject:</b> [Roadsters] Brake =
Problem<o:p></o:p></p></div></div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>Some had =
advised me to find a gravel road and see what I could =
discover.<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>Honestly there really are no gravel roads around =
here.<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>I tried today pumping the pedal.&nbsp; No =
difference<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>But then I got it up to 40+, took it out of gear and =
stomped the brake pedal with everything I had. The right rear pretty =
much stopped.&nbsp; Did it again, and both rear wheels left some =
rubber.<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>Clearly, as I had suspected, I have no front =
brakes.&nbsp; But when I bleed the fluid flows on all four =
corners.<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>So where is the best place to have the front rotors =
rebuilt???<o:p></o:p></p></div></body></html>
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From: dave via Datsun-roadsters <[email-masked]>
Date: Sat, 11 Jul 2020 22:23:21 -0500

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First of all, sorry, I meant rebuild calipers, not rotors.

=20

Early 67 1600

=20

Best place to get new pads?

=20

Car does not really pull in either direction when I hit the brakes.

=20

I=E2=80=99ll check the rotors sunday

=20

From: Pat Horne <[email-masked]>=20
Sent: Saturday, July 11, 2020 8:30 PM
To: dave <[email-masked]>
Cc: [email-masked]
Subject: Re: [Roadsters] Brake Problem

=20

=20

=20

=20

If you compare the pedal pumping it with the parking brake on & off is =
there much difference?

=20

Calipers are expensive to replace/rebuild so I=E2=80=99d try cheaper =
stuff first. Worn out front pads or worn down rotors can cause the =
fronts to not work. Pads are the cheapest but will also mask other =
problems if the real problem isn=E2=80=99t the pads =20

=20

Peace,

Pat

Pat Horne=20

=20

On Jul 11, 2020, at 8:18 PM, dave via Datsun-roadsters =
<[email-masked] =

=EF=BB=BF

=20

=20

=20

But then I got it up to 40+, took it out of gear and stomped the brake =
pedal with everything I had. The right rear pretty much stopped.  Did it =
again, and both rear wheels left some rubber.

=20

Clearly, as I had suspected, I have no front brakes.  But when I bleed =
the fluid flows on all four corners.

=20

Archive: http://www.team.net/pipermail/datsun-roadsters =
http://autox.team.net/archive

Unsubscribe: =
http://autox.team.net/mailman/options/datsun-roadsters/patintexas@icloud.=
com

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</o:shapelayout></xml><![endif]--></head><body lang=3DEN-US =
link=3D"#0563C1" vlink=3D"#954F72"><div class=3DWordSection1><p =
class=3DMsoNormal>First of all, sorry, I meant rebuild calipers, not =
rotors.<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>Early 67 1600<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>Best place =
to get new pads?<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>Car does not =
really pull in either direction when I hit the brakes.<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>I=E2=80=99ll =
check the rotors sunday<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><div =
style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in'><p class=3DMsoNormal><b>From:</b> Pat Horne =
&lt;[email-masked]&gt; <br><b>Sent:</b> Saturday, July 11, 2020 =
8:30 PM<br><b>To:</b> dave &lt;[email-masked]&gt;<br><b>Cc:</b> =
[email-masked]<br><b>Subject:</b> Re: [Roadsters] Brake =
Problem<o:p></o:p></p></div></div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>Please =
remind me, what year is the car?<o:p></o:p></p><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>How much lining is on the =
fronts?<o:p></o:p></p><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>How thick are the rotors?<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>If you compare the pedal pumping it with the parking =
brake on &amp; off is there much difference?<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>Calipers are expensive to replace/rebuild so =
I=E2=80=99d try cheaper stuff first. Worn out front pads or worn down =
rotors can cause the fronts to not work. Pads are the cheapest but will =
also mask other problems if the real problem isn=E2=80=99t the pads =
&nbsp;<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>Peace,<o:p></o:p></p></div><div><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'>Pat<o:p></o:p></p><div><p =
class=3DMsoNormal>Pat Horne&nbsp;<o:p></o:p></p><div><p =
class=3DMsoNormal>We support Habitat for =
Humanity<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div></div><div><p =
class=3DMsoNormal style=3D'margin-bottom:12.0pt'><br>On Jul 11, 2020, at =
8:18 PM, dave via Datsun-roadsters &lt;<a =
href=3D"mailto:[email-masked]">[email-masked]=
am.net</a>&gt; wrote:<o:p></o:p></p></div><div><p =
class=3DMsoNormal>=EF=BB=BF<o:p></o:p></p><p class=3DMsoNormal>Some had =
advised me to find a gravel road and see what I could =
discover.<o:p></o:p></p><p class=3DMsoNormal>&nbsp;<o:p></o:p></p><p =
class=3DMsoNormal>Honestly there really are no gravel roads around =
here.<o:p></o:p></p><p class=3DMsoNormal>&nbsp;<o:p></o:p></p><p =
class=3DMsoNormal>I tried today pumping the pedal.&nbsp; No =
difference<o:p></o:p></p><p class=3DMsoNormal>&nbsp;<o:p></o:p></p><p =
class=3DMsoNormal>But then I got it up to 40+, took it out of gear and =
stomped the brake pedal with everything I had. The right rear pretty =
much stopped.&nbsp; Did it again, and both rear wheels left some =
rubber.<o:p></o:p></p><p class=3DMsoNormal>&nbsp;<o:p></o:p></p><p =
class=3DMsoNormal>Clearly, as I had suspected, I have no front =
brakes.&nbsp; But when I bleed the fluid flows on all four =
corners.<o:p></o:p></p><p class=3DMsoNormal>&nbsp;<o:p></o:p></p><p =
class=3DMsoNormal>So where is the best place to have the front rotors =
rebuilt???<o:p></o:p></p><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'>________________________________________<b=
r><br><a =
href=3D"mailto:[email-masked]">[email-masked]=
am.net</a><br><br>Donate: <a =
href=3D"http://www.team.net/donate.html">http://www.team.net/donate.html<=
/a><br>Archive: <a =
href=3D"http://www.team.net/pipermail/datsun-roadsters">http://www.team.n=
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From: J Sandhoff via Datsun-roadsters <[email-masked]>
Date: Sat, 11 Jul 2020 23:48:02 -0700

If the rotors are beyond their wear limit, then the front pads will
not engage. Firm pedal but no stopping power up front. And the fronts
normally do the vast majority of the work.

Virtually the same front systems were used on Jaguars and Studebakers
- cars twice as heavy - so a properly working system has plenty of
stopping power. Unless all of the front cylinders are seized -
unlikely but possible, I suppose - then I suspect the problem is not
the calipers.

If everything looks OK, then crack open a front bleeder, cover it
firmly with your thumb, cover your thumb with a rag 'cause this is
gonna squirt, and have a friend slowly depress the pedal. See if the
front circuit is building pressure. Bad proportioning valve (single
master) or bad master (dual master) if little pressure. On a dual
master car the red 'B' dash light would also light up if the pressures
were unbalanced.

Be warned that if the front cylinders are internally pitted -
extremely likely unless the fluid was flushed every couple of years -
then pushing the pistons back in to install new rotors or pads will
likely lead to leaks. This is because the piston and attached seal
will be pushed back into the pitted area. No solution except resleeve
or replace.

Brake maintenance has been heavily discussed in the distant past but
all that info is buried in the dusty archives. There may be writeups
preserved in the 311s forum. I miss the lively discussions that used
to occur here on the mailing list...

I also miss seeing my Roadster buddies in person :-(

-- John
    John F Sandhoff   [email-masked]   Sacramento, CA

On Sat, Jul 11, 2020 at 6:18 PM dave via Datsun-roadsters
<[email-masked]> wrote:
> But then I got it up to 40+, took it out of gear and stomped the brake pedal with everything I had. The right rear pretty much stopped.  Did it again, and both rear wheels left some rubber.
>
>
>
> Clearly, as I had suspected, I have no front brakes.  But when I bleed the fluid flows on all four corners.
>
>
>
> Unsubscribe: http://autox.team.net/mailman/options/datsun-roadsters/[email-masked]
>
>

---

From: Jerry Krakauer via Datsun-roadsters <[email-masked]>
Date: Sun, 12 Jul 2020 11:35:24 -0400

Back in the day the Dunlop cylinders did have a reputation of seizing. The
good news was that  their external bolt on design made it very easy and
quick to change, four bolts, brake line and bridge tube and a bit of
bleeding. Since they went for around $30 new, nobody bothered to rebuild.
I also agree with John, with the right pads(I used Ferodo DS11 racing
material, which would hardly work at all when cold!) they were very good
brakes for the time, and worked well with the alfin drum rears(running
Nissan 'green stuff' linings.

Jerry Krakauer
SRL 311 00099

-----Original Message-----
From: Datsun-roadsters [mailto:[email-masked]] On
Behalf Of J Sandhoff via Datsun-roadsters
Sent: Sunday, July 12, 2020 2:48 AM
To: dave
Cc: [email-masked]
Subject: Re: [Roadsters] Brake Problem

-- John

On Sat, Jul 11, 2020 at 6:18 PM dave via Datsun-roadsters
<[email-masked]> wrote:
> But then I got it up to 40+, took it out of gear and stomped the brake
pedal with everything I had. The right rear pretty much stopped.  Did it
again, and both rear wheels left some rubber.
> Unsubscribe:
http://autox.team.net/mailman/options/datsun-roadsters/[email-masked]

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