mgs
[Top] [All Lists]

Re: [Mgs] MGB electric tach

To: mgs@autox.team.net
Subject: Re: [Mgs] MGB electric tach
From: lrc@red4est.com
Date: Wed, 23 Oct 2024 13:40:51 -0700
Delivered-to: mharc@autox.team.net
Delivered-to: mgs@autox.team.net
References: <89803e9211ea4522996ef8c99f33df2b@ranteer.com>
User-agent: K-9 Mail for Android
--===============3326502074193836285==
 boundary=----DGXNBOQ7BIYMIJF3V382O9VI0ZYH66
Content-Transfer-Encoding: 7bit

------DGXNBOQ7BIYMIJF3V382O9VI0ZYH66
 charset=utf-8
Content-Transfer-Encoding: quoted-printable

Some mg tachs require current to flow through them to the points, more mode=
rn tachs just read the voltage at the points=2E

On October 23, 2024 12:25:55 PM PDT, dave northrup <dave@ranteer=2Ecom> wr=
ote:
>Working on an MGA with a swapped in early 5 main MGB engine=2E
>
>Trying to figure out how to set up an electric tach=2E  With the car came=
 an MGA tach with the internals swapped for an MGB tach but it doesn't work=
=2E  I purchased an MGB tach, and am trying to test it before I attempt to =
swap the internals for the non working one=2E
>
>Here is a picture of the tach; there are 2 white leads, which according t=
o the wiring diagram, one goes to the coil and one to the ignition=2E  Whic=
h is which?  Or should I just try them?  I know that it goes power to tach =
to coil=2E  We had the car running with the old tach but no movement of the=
 needle before we found out that the gage was bad=2E
>
>Also, I am assuming the extra spade in the tach goes to power?  At least =
the ground spade is obvious as its part of the case=2E
>
>And, while I'm at it, the MGB wiring diagram shows one lead to the gage v=
oltage stabilizer=2E  I'm thinking that can go directly to the fuse box to =
power?

--=20
Sent from my Android device with K-9 Mail=2E Please excuse my brevity=2E
------DGXNBOQ7BIYMIJF3V382O9VI0ZYH66
 charset=utf-8
Content-Transfer-Encoding: quoted-printable

<html xmlns:v=3D"urn:schemas-microsoft-com:vml" xmlns:o=3D"urn:schemas-micr=
osoft-com:office:office" xmlns:w=3D"urn:schemas-microsoft-com:office:word" =
xmlns:m=3D"http://schemas=2Emicrosoft=2Ecom/office/2004/12/omml"; xmlns=3D"h=
ttp://www=2Ew3=2Eorg/TR/REC-html40">
<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii=
">
<meta name=3D"Generator" content=3D"Microsoft Word 15 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
        {font-family:"Cambria Math";
        panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
        {font-family:Calibri;
        panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p=2EMsoNormal, li=2EMsoNormal, div=2EMsoNormal
        {margin:0in;
        font-size:11=2E0pt;
        font-family:"Calibri",sans-serif;
        mso-ligatures:standardcontextual;}
span=2EEmailStyle17
        {mso-style-type:personal-compose;
        font-family:"Calibri",sans-serif;
        color:black;}
=2EMsoChpDefault
        {mso-style-type:export-only;
        font-family:"Calibri",sans-serif;}
@page WordSection1
        {size:8=2E5in 11=2E0in;
        margin:1=2E0in 1=2E0in 1=2E0in 1=2E0in;}
div=2EWordSection1
        {page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext=3D"edit" spidmax=3D"1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext=3D"edit">
<o:idmap v:ext=3D"edit" data=3D"1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang=3D"EN-US" link=3D"#0563C1" vlink=3D"#954F72" style=3D"word-wrap=
:break-word"><div dir=3D"auto">Some mg tachs require current to flow throug=
h them to the points, more modern tachs just read the voltage at the points=
=2E</div><br><br><div class=3D"gmail_quote"><div dir=3D"auto">On October 23=
, 2024 12:25:55 PM PDT, dave northrup &lt;dave@ranteer=2Ecom&gt; wrote:</di=
v><blockquote class=3D"gmail_quote" style=3D"margin: 0pt 0pt 0pt 0=2E8ex; b=
order-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">

<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span style=3D"color:black">Working on an MGA with =
a swapped in early 5 main MGB engine=2E<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:black"><o:p>&nbsp;</o:p></span=
></p>
<p class=3D"MsoNormal"><span style=3D"color:black">Trying to figure out ho=
w to set up an electric tach=2E&nbsp; With the car came an MGA tach with th=
e internals swapped for an MGB tach but it doesn=E2=80=99t work=2E&nbsp; I =
purchased an MGB tach, and am trying to test it before I attempt
 to swap the internals for the non working one=2E<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:black"><o:p>&nbsp;</o:p></span=
></p>
<p class=3D"MsoNormal"><span style=3D"color:black">Here is a picture of th=
e tach; there are 2 white leads, which according to the wiring diagram, one=
 goes to the coil and one to the ignition=2E&nbsp; Which is which?&nbsp; Or=
 should I just try them?&nbsp; I know that it goes power
 to tach to coil=2E&nbsp; We had the car running with the old tach but no =
movement of the needle before we found out that the gage was bad=2E<o:p></o=
:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:black"><o:p>&nbsp;</o:p></span=
></p>
<p class=3D"MsoNormal"><span style=3D"color:black">Also, I am assuming the=
 extra spade in the tach goes to power?&nbsp; At least the ground spade is =
obvious as its part of the case=2E<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:black"><o:p>&nbsp;</o:p></span=
></p>
<p class=3D"MsoNormal"><span style=3D"color:black">And, while I=E2=80=99m =
at it, the MGB wiring diagram shows one lead to the gage voltage stabilizer=
=2E&nbsp; I=E2=80=99m thinking that can go directly to the fuse box to powe=
r?<o:p></o:p></span></p>
</div>
</blockquote></div><div dir=3D"auto"><div class=3D'k9mail-signature'>-- <b=
r>Sent from my Android device with K-9 Mail=2E Please excuse my brevity=2E<=
/div></div></body>
</html>

------DGXNBOQ7BIYMIJF3V382O9VI0ZYH66--

--===============3326502074193836285==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

_______________________________________________

Mgs@autox.team.net

Archive: http://www.team.net/pipermail/mgs http://autox.team.net/archive

Unsubscribe: http://autox.team.net/mailman/options/mgs/mharc@autox.team.net

--===============3326502074193836285==--

<Prev in Thread] Current Thread [Next in Thread>