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Austin America convertibles were fitted with a 3.666666:1 differential.
Direct exchange should you find one.. Best chance is probably the UK.
On 5/9/2019 1:18 PM, Curtis Arndt wrote:
> Hi Wayne,
>
> First what do you mean by "early BN1?"Â If it's the Spiral Bevel rear
> end, then the standard 3.54 rear end conversion _will not work_.Â
> These will only work on the later BN1s with the Hypoid Bevel rear end
> starting at chassis no. 221536 in Nov. '54.
>
> That being said, maybe there is a lower gear option for the Spiral
> Bevel unit, but if there is, I'm not aware of who might supply it.
>
> BTW, my shop here in San Diego installed my Lempert 3.54 rear-end, and
> of course rebuilt the whole unit while they had the thing apart.Â
> Fortunately, the shop had done a number of Healey conversions and was
> very familiar with the process. BTW, I have one of the very early BN1
> Hypoid rear end units with the filler plug on the carrier versus on
> the top of the pumpkin as on the later cars, but there was no problem.
>
> Anyone interested, I have an spare original 3.54 rear end that I
> picked up 20 years ago in Australia from my friend Rob Rowland at the
> Healey Factory. If interested, send me an email.
>
> Cheers,
>
> Curt
>
> On Wed, May 8, 2019 at 2:25 PM Wayne Schultz <waschu2@gmail.com
>
> Does anyone have the specifications for installing a 3:5 or so
> gear set into an early BN-1 100-4 differential? I am looking for
> pinion preload and ring gear lash etc.My friend with his 100-4
> spends a lot of time on the highway and would like to lower his
> rpm's at highway speeds. Denis Welch has the gearset needed, just
> would need specs, available of shims, bearings etc. I have done
> several conversions on Healey 3000's but the BN-1 third member is
> a different animal
>
> Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Thanks
> Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Wayne
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--
Porter Custom Bicycles 2909 Arno St. NE Albuquerque, NM. 505-352-1378 My World
go here: WWW.PORTERBIKES.COM/
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<p>Austin America convertibles were fitted with a 3.666666:1
differential. Direct exchange should you find one.. Best chance is
probably the UK.<br>
</p>
<div class="moz-cite-prefix">On 5/9/2019 1:18 PM, Curtis Arndt
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAJKrNeQ7Ljq0OkNDh7LNaFLufUXgxNJGsAdtv9z3ya5aPCfe_g@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">Hi Wayne,
<div><br>
</div>
<div>First what do you mean by "early BN1?"Â If it's the Spiral
Bevel rear end, then the standard 3.54 rear end conversion <u>will
not work</u>. These will only work on the later BN1s with
the Hypoid Bevel rear end starting at chassis no. 221536 in
Nov. '54.</div>
<div><br>
</div>
<div>That being said, maybe there is a lower gear option for the
Spiral Bevel unit, but if there is, I'm not aware of who might
supply it.</div>
<div><br>
</div>
<div>BTW, my shop here in San Diego installed my Lempert 3.54
rear-end, and of course rebuilt the whole unit while they had
the thing apart. Fortunately, the shop had done a number of
Healey conversions and was very familiar with the process.Â
BTW, I have one of the very early BN1 Hypoid rear end units
with the filler plug on the carrier versus on the top of the
pumpkin as on the later cars, but there was no problem.</div>
<div><br>
</div>
<div>Anyone interested, I have an spare original 3.54 rear end
that I picked up 20 years ago in Australia from my friend Rob
Rowland at the Healey Factory. If interested, send me an
email.</div>
<div><br>
</div>
<div>Cheers,</div>
<div><br>
</div>
<div>Curt</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Wed, May 8, 2019 at 2:25 PM
Wayne Schultz <<a href="mailto:waschu2@gmail.com";
moz-do-not-send="true">waschu2@gmail.com</a>> wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="ltr">Does anyone have the specifications for
installing a 3:5 or so gear set into an early BN-1 100-4
differential? I am looking for pinion preload and ring gear
lash etc.My friend with his 100-4 spends a lot of time on
the highway and would like to lower his rpm's at highway
speeds. Denis Welch has the gearset needed, just would need
specs, available of shims, bearings etc. I have done several
conversions on Healey 3000's but the BN-1 third member is a
different animal
<div><br>
</div>
<div>Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
Thanks</div>
<div>Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
 Wayne </div>
</div>
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</blockquote>
</div>
<br>
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<pre class="moz-quote-pre"
wrap="">_______________________________________________
Archive: <a class="moz-txt-link-freetext"
href="http://www.team.net/pipermail/healeys";>http://www.team.net/pipermail/healeys</a>
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href="http://autox.team.net/archive";>http://autox.team.net/archive</a>
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</blockquote>
<pre class="moz-signature" cols="72">--
Porter Custom Bicycles 2909 Arno St. NE Albuquerque, NM. 505-352-1378 My World
go here: <a class="moz-txt-link-abbreviated"
href="http://WWW.PORTERBIKES.COM/";>WWW.PORTERBIKES.COM/</a></pre>
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