Subject: [Mgs] how do i tell?

From: Eric Russell <[email-masked]>
Date: Thu, 22 Dec 2022 13:11:44 -0500

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From: dave northrup <[email-masked]>
Subject: [Mgs] how do i tell?

> I am in the process of ordering a 5 speed gearbox for my 59 MGA.
> It has an early 5 main MGB engine.  The vendors are asking which
transmission, flywheel, and
> clutch I have.
>
> How do I tell?  The body is off the car so access is easy.

The picture appears to be an MGA 'high mount' starter version. As for the
clutch, how many dowel pins locate the pressure plate to the flywheel? MGA
clutch has 2, MGB clutch has 3. The MGB clutch (stronger) can be used with
the MGA transmission if one also uses the MGB transmission front cover &
MGB throw out fork. Look for the casting number on the front cover. MGB
cover is #22B55. Clutch disc are all the same diameter but the splined
transmission input shaft can be 10 spline (MGA) or 23 spline (late MGA MK2
& all MGB).

-- 
Eric Russell
Mebane, NC

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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-size:large"><sp=
an style=3D"font-size:small">From: dave northrup &lt;</span><a href=3D"mail=
to:[email-masked]" target=3D"_blank" style=3D"font-size:small">dave@rante=
er.com</a><span style=3D"font-size:small">&gt;</span><br style=3D"font-size=
:small"><span style=3D"font-size:small">Subject: [Mgs] how do i tell?</span=
><br style=3D"font-size:small"><br style=3D"font-size:small"><span style=3D=
"font-size:small">&gt; I am in the process of ordering a 5 speed gearbox fo=
r my 59 MGA.</span><br style=3D"font-size:small"><span style=3D"font-size:s=
mall">&gt; It has an early 5 main MGB engine.=C2=A0 The vendors are asking =
which transmission, flywheel, and=C2=A0</span></div><div class=3D"gmail_def=
ault" style=3D"font-size:large"><span style=3D"font-size:small">&gt; clutch=
 I have.</span><br style=3D"font-size:small">&gt;<br style=3D"font-size:sma=
ll"><span style=3D"font-size:small">&gt; How do I tell?=C2=A0 The body is o=
ff the car so access is easy.=C2=A0</span><br clear=3D"all"></div><div clas=
s=3D"gmail_default" style=3D"font-size:large"><span style=3D"font-size:smal=
l"><br></span></div><div class=3D"gmail_default" style=3D"font-size:large">=
<span style=3D"font-size:small">The picture appears to be an MGA &#39;high =
mount&#39; starter version. As for the clutch, how many dowel pins locate t=
he pressure plate to the flywheel? MGA clutch has 2, MGB clutch has 3. The =
MGB clutch (stronger) can be used with the MGA transmission if one also use=
s the MGB transmission front cover &amp; MGB throw out fork. Look for the c=
asting number on the front cover. MGB cover is #22B55. Clutch disc are all =
the same diameter but the splined transmission input shaft can be 10 spline=
 (MGA) or 23 spline (late MGA MK2 &amp; all MGB).=C2=A0</span></div><div><b=
r></div>-- <br><div dir=3D"ltr" class=3D"gmail_signature" data-smartmail=3D=
"gmail_signature"><div dir=3D"ltr">Eric Russell<div>Mebane, NC</div></div><=
/div></div>

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