Subject: [Tigers] Distributor Question

From: Joe Brown via Tigers <[email-masked]>
Date: Sun, 24 Feb 2019 20:22:32 -0600

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Hi,

I got into my distributor (FoMoCo 12127) to replace the points with a
Pertronix unit and I decided to strip the whole thing down because the
shaft was not turning easily (dried out gunk).  I made note of where the
springs and weights went on the cam and stop plates but I didn't make a
note of which slot in the cam plate goes over the tab that limits the
advance.  One slot is marked 13L (which I believe means 26 degrees of
advance) and the other slot is marked 18L (which I believe means a limit of
36 degrees).  The manual says a max centrifugal advance of 11 degrees.  So,
should I set the plate to 13L for a max advance of 26?

Thanks,
Joe Brown

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<div dir=3D"ltr">Hi,<div><br></div><div>I got into my distributor (FoMoCo 1=
2127) to replace the points with a Pertronix unit and I decided to strip th=
e whole thing down because the shaft was not turning easily (dried out gunk=
).=C2=A0 I made note of where the springs and weights went on the cam and s=
top plates but I didn&#39;t make a note of which slot in the cam plate goes=
 over the tab that limits the advance.=C2=A0 One slot is marked 13L (which =
I believe means 26 degrees of advance) and the other slot is marked 18L (wh=
ich I believe means a limit of 36 degrees).=C2=A0 The manual says a max cen=
trifugal advance of 11 degrees.=C2=A0 So, should I set the plate to 13L for=
 a max advance of 26?</div><div><br></div><div>Thanks,</div><div>Joe Brown<=
/div></div>

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From: Ron Fraser via Tigers <[email-masked]>
Date: Mon, 25 Feb 2019 10:23:02 -0500

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Joe

                The original position was the 13L slot.

The Shop Manual states 11 distributor degrees which is 22 degrees at the =
crank; you always have to be careful with those descriptions.

=20

For an exploded view of this distributor you need to look at the =
electrical section, WF, in the Mark II Parts List.

There should be a small rubber band around the tab for that advance =
slot; it acts as a cushion against metal to metal contact and reduces =
the amount of advance slightly.

=20

If you still have the relatively low compression 260 engine, about 9 to =
1 compression, you could use the 18L slot.  More advance will give you =
more economy on the highway.   This change requires some careful =
distributor advance curve tuning on your part.

=20

Ron Fraser

=20

From: Tigers <[email-masked]> On Behalf Of Joe Brown via =
Tigers
Sent: Sunday, February 24, 2019 9:23 PM
To: Tigers Den <[email-masked]>
Subject: [Tigers] Distributor Question

=20

Hi,

=20

I got into my distributor (FoMoCo 12127) to replace the points with a =
Pertronix unit and I decided to strip the whole thing down because the =
shaft was not turning easily (dried out gunk).  I made note of where the =
springs and weights went on the cam and stop plates but I didn't make a =
note of which slot in the cam plate goes over the tab that limits the =
advance.  One slot is marked 13L (which I believe means 26 degrees of =
advance) and the other slot is marked 18L (which I believe means a limit =
of 36 degrees).  The manual says a max centrifugal advance of 11 =
degrees.  So, should I set the plate to 13L for a max advance of 26?

=20

Thanks,

Joe Brown

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link=3D"#0563C1" vlink=3D"#954F72"><div class=3DWordSection1><p =
class=3DMsoNormal>Joe<o:p></o:p></p><p =
class=3DMsoNormal>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 The original position was the 13L =
slot.<o:p></o:p></p><p class=3DMsoNormal>The Shop Manual states 11 =
distributor degrees which is 22 degrees at the crank; you always have to =
be careful with those descriptions.<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>For an =
exploded view of this distributor you need to look at the electrical =
section, WF, in the Mark II Parts List.<o:p></o:p></p><p =
class=3DMsoNormal>There should be a small rubber band around the tab for =
that advance slot; it acts as a cushion against metal to metal contact =
and reduces the amount of advance slightly.<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>If you still =
have the relatively low compression 260 engine, about 9 to 1 =
compression, you could use the 18L slot.=C2=A0 More advance will give =
you more economy on the highway.=C2=A0=C2=A0 This change requires some =
careful distributor advance curve tuning on your part.<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>Ron =
Fraser<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal><b>From:</b> Tigers =
&lt;[email-masked]&gt; <b>On Behalf Of </b>Joe Brown via =
Tigers<br><b>Sent:</b> Sunday, February 24, 2019 9:23 PM<br><b>To:</b> =
Tigers Den &lt;[email-masked]&gt;<br><b>Subject:</b> [Tigers] =
Distributor Question<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><p =
class=3DMsoNormal>Hi,<o:p></o:p></p><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p class=3DMsoNormal>I =
got into my distributor (FoMoCo 12127) to replace the points with a =
Pertronix unit and I decided to strip the whole thing down because the =
shaft was not turning easily (dried out gunk).&nbsp; I made note of =
where the springs and weights went on the cam and stop plates but I =
didn't make a note of which slot in the cam plate goes over the tab that =
limits the advance.&nbsp; One slot is marked 13L (which I believe means =
26 degrees of advance) and the other slot is marked 18L (which I believe =
means a limit of 36 degrees).&nbsp; The manual says a max centrifugal =
advance of 11 degrees.&nbsp; So, should I set the plate to 13L for a max =
advance of 26?<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>Thanks,<o:p></o:p></p></div><div><p =
class=3DMsoNormal>Joe =
Brown<o:p></o:p></p></div></div></div></body></html>
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[email-masked]

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