Subject: [Healeys] Lay Gear End Float

From: Harold Manifold <[email-masked]>
Date: Tue, 9 Jan 2024 10:05:08 -0800

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I will be assembling my Side Shift Gearbox soon. As I am going through the
parts list I noticed the rear thrust washer for the Lay Gear is available
in different thickness which suggests there is a specification for the end
float. The thrust washers come in 0.003" increments which would suggest an
end float of 0.001" to 0.003".

Does that sound right?

Thanks... Harold

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<div dir=3D"ltr">I will be assembling my Side Shift Gearbox soon. As I am g=
oing through the parts list I noticed the rear thrust washer for the Lay Ge=
ar is available in different thickness which suggests=C2=A0there is a speci=
fication for the=C2=A0end float. The thrust washers come in 0.003&quot; inc=
rements=C2=A0which would suggest an end float=C2=A0of 0.001&quot; to 0.003&=
quot;.<div><br></div><div>Does that sound right?</div><div><br></div><div>T=
hanks... Harold</div></div>

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From: Michael Salter <[email-masked]>
Date: Tue, 9 Jan 2024 14:14:18 -0500

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I've never seen a published figure for laygear endfloat Harold but my
conclusion was the same as yours so I always try to set it to between 1 & 3
thou.
On occasion I've had to resort to turning up my own rear thrust bearings to
achieve the "correct" end float.
One box that came into us with a complaint of jumping out of 4th gear all
the time had a broken and therefore missing rear thrust washer. Setting up
the endfloat with a custom made thrust washer to compensate for the wear
and refacing of the end of the laygear and making no other changes solved
the problem completely.

M

On Tue., Jan. 9, 2024, 1:13 p.m. Harold Manifold, <[email-masked]>
wrote:

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<div dir=3D"auto">I&#39;ve never seen a published figure for laygear endflo=
at Harold but my conclusion was the same as yours so I always try to set it=
 to between 1 &amp; 3 thou.<div dir=3D"auto">On occasion I&#39;ve had to re=
sort to turning up my own rear thrust bearings to achieve the &quot;correct=
&quot; end float.</div><div dir=3D"auto">One box that came into us with a c=
omplaint of jumping out of 4th gear all the time had a broken and therefore=
 missing rear thrust washer. Setting up the endfloat with a custom made thr=
ust washer to compensate for the wear and refacing of the end of the laygea=
r and making no other changes solved the problem completely.</div><div dir=
=3D"auto"><br></div><div dir=3D"auto">M</div></div><br><div class=3D"gmail_=
quote"><div dir=3D"ltr" class=3D"gmail_attr">On Tue., Jan. 9, 2024, 1:13 p.=
m. Harold Manifold, &lt;<a href=3D"mailto:[email-masked]">manifold@telu=
s.net</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"ma=
rgin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir=3D"lt=
r">I will be assembling my Side Shift Gearbox soon. As I am going through t=
he parts list I noticed the rear thrust washer for the Lay Gear is availabl=
e in different thickness which suggests=C2=A0there is a specification for t=
he=C2=A0end float. The thrust washers come in 0.003&quot; increments=C2=A0w=
hich would suggest an end float=C2=A0of 0.001&quot; to 0.003&quot;.<div><br=
></div><div>Does that sound right?</div><div><br></div><div>Thanks... Harol=
d</div></div>
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From: Hank Leach <[email-masked]>
Date: Tue, 09 Jan 2024 21:01:00 +0000 6t3UdJJ4/2vpzBWfVXkUo7isnHrtnNypq9dN4LjA3sCsQW1AIn5lXvjZHDSyywykpdtXLDj2QtxK8UmexaPTUHLNlPwuOgBxfOM=

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<div>Hi Harold- you do no mention the GB # or series you are assembling.=
&nbsp; There was a modification in the side shift&nbsp; unit around 1962 in=
 bushings and baulk rings just before it became a center shift.</div>
<div>&nbsp;</div>
<div>However, the specs for the laygear is similar for =
most all BMC boxes. Here is the passage from the Service Manual for the 100=
 gearbox which really also applies to the later 4spd. and center shift =
assemblies.</div>
<div>&nbsp;</div>
<div>Hope this helps to guide you. =
Regards, Hank (healeyhelper.com)</div>
<div><br>-------------------- =
<br><br>From: "Harold Manifold" &lt;[email-masked]&gt; <br>To: "Healey =
List" &lt;[email-masked]&gt; <br>Sent: Tue, Jan 09 2024 10:25 AM =
<br>Subject: [Healeys] Lay Gear End Float </div>
<div>I will be assembling =
my Side Shift Gearbox soon. As I am going through the parts list I noticed =
the rear thrust washer for the Lay Gear is available in different thickness=
 which suggests&nbsp;there is a specification for the&nbsp;end float. The =
thrust washers come in 0.003" increments&nbsp;which would suggest an end =
float&nbsp;of 0.001" to 0.003".
<div>&nbsp;</div>
<div>Does that sound =
right?</div>
<div>&nbsp;</div>
<div>Thanks... Harold</div>
</div>
<div>&nbsp;</div>
<p>_______________________________________________<br>Sup=
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From: Harold Manifold <[email-masked]>
Date: Tue, 9 Jan 2024 14:24:30 -0800

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Hank,

The gear box is a BN4 Sideshift for a Healey 100-6. I have a Healey BT7
with a November 1960 build date but when I took the car apart I discovered
the BN4 gearbox. Your article is perfect and confirms my suspicion the end
float should be 0.001" to 0.003".

Thanks... Harold

On Tue, Jan 9, 2024 at 1:01=E2=80=AFPM Hank Leach <[email-masked]> wro=
te:

> Hi Harold- you do no mention the GB # or series you are assembling.  Ther=
e
> was a modification in the side shift  unit around 1962 in bushings and
> baulk rings just before it became a center shift.
>
> However, the specs for the laygear is similar for most all BMC boxes. Her=
e
> is the passage from the Service Manual for the 100 gearbox which really
> also applies to the later 4spd. and center shift assemblies.
>
> Hope this helps to guide you. Regards, Hank (healeyhelper.com)
>
> --------------------
>
> From: "Harold Manifold" <[email-masked]>
> To: "Healey List" <[email-masked]>
> Sent: Tue, Jan 09 2024 10:25 AM
> Subject: [Healeys] Lay Gear End Float
> I will be assembling my Side Shift Gearbox soon. As I am going through th=
e
> in different thickness which suggests there is a specification for the en=
d
> float. The thrust washers come in 0.003" increments which would suggest a=
n
> http://autox.team.net/mailman/options/healeys/[email-masked]
>

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<div dir=3D"ltr">Hank,<div><br></div><div>The gear box is a BN4 Sideshift f=
or a Healey 100-6. I have a Healey BT7 with a November 1960 build date but =
when I took the car apart I discovered the BN4 gearbox. Your article is per=
fect and confirms my suspicion=C2=A0the end float=C2=A0should be 0.001&quot=
; to 0.003&quot;.</div><div><br></div><div>Thanks... Harold</div></div><br>=
<div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Tue, Ja=
n 9, 2024 at 1:01=E2=80=AFPM Hank Leach &lt;<a href=3D"mailto:gradea1@chart=
er.net">[email-masked]</a>&gt; wrote:<br></div><blockquote class=3D"gm=
ail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,=
204,204);padding-left:1ex"><div>Hi Harold- you do no mention the GB # or se=
ries you are assembling.=C2=A0 There was a modification in the side shift=
=C2=A0 unit around 1962 in bushings and baulk rings just before it became a=
 center shift.</div>
<div>=C2=A0</div>
<div>However, the specs for the laygear is similar for most all BMC boxes. =
Here is the passage from the Service Manual for the 100 gearbox which reall=
y also applies to the later 4spd. and center shift assemblies.</div>
<div>=C2=A0</div>
<div>Hope this helps to guide you. Regards, Hank (<a href=3D"http://healeyh=
elper.com" target=3D"_blank">healeyhelper.com</a>)</div>
<div><br>-------------------- <br><br>From: &quot;Harold Manifold&quot; &lt=
;<a href=3D"mailto:[email-masked]" target=3D"_blank">[email-masked]=
</a>&gt; <br>To: &quot;Healey List&quot; &lt;<a href=3D"mailto:healeys@auto=
x.team.net" target=3D"_blank">[email-masked]</a>&gt; <br>Sent: Tue,=
 Jan 09 2024 10:25 AM <br>Subject: [Healeys] Lay Gear End Float </div>
<div>I will be assembling my Side Shift Gearbox soon. As I am going through=
 the parts list I noticed the rear thrust washer for the Lay Gear is availa=
ble in different thickness which suggests=C2=A0there is a specification for=
 the=C2=A0end float. The thrust washers come in 0.003&quot; increments=C2=
=A0which would suggest an end float=C2=A0of 0.001&quot; to 0.003&quot;.
<div>=C2=A0</div>
<div>Does that sound right?</div>
<div>=C2=A0</div>
<div>Thanks... Harold</div>
</div>
<div>=C2=A0</div>
<p>_______________________________________________<br>Support <a href=3D"ht=
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