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Re: [Healeys] Differential vs BN2 OVERDRIVE

To: healeys@autox.team.net
Subject: Re: [Healeys] Differential vs BN2 OVERDRIVE
From: Bob Spidell <bspidell@comcast.net>
Date: Wed, 4 Mar 2020 18:50:47 -0800
Delivered-to: mharc@autox.team.net
Delivered-to: healeys@autox.team.net
References: <207713053.3071316.1583350499215.ref@mail.yahoo.com> <207713053.3071316.1583350499215@mail.yahoo.com>
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I respectfully disagree.  First is so low in a Healey I often started in 
second before I put a 3.54 diff in my BJ8.  I still start in second if 
I'm rolling at all, facing downhill or it just won't go into first 
(plenty of low-end torque in the old lump).  Second is more usable as 
well (first and second are too close together IMO; I barely get into 
second before it's time to upshift).  I wouldn't mind a .28 OD ratio 
with a 3.54 diff either.

Bob


On 3/4/2020 11:34 AM, Mark Goodman wrote:
> If you change from a 3.90 to a 3.54 rear end you lose most of 1st 
> gear.  I changed my overdrive on my BJ8 to a BN2
> and in 4th gear overdrive my engine operates about 600 RPM lower.  It 
> is a much better way to go.
>


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    I respectfully disagree.  First is so low in a Healey I often
    started in second before I put a 3.54 diff in my BJ8.  I still start
    in second if I'm rolling at all, facing downhill or it just won't go
    into first (plenty of low-end torque in the old lump).  Second is
    more usable as well (first and second are too close together IMO; I
    barely get into second before it's time to upshift).  I wouldn't
    mind a .28 OD ratio with a 3.54 diff either.<br>
    <br>
    Bob<br>
    <br>
    <br>
    <div class="moz-cite-prefix">On 3/4/2020 11:34 AM, Mark Goodman
      wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:207713053.3071316.1583350499215@mail.yahoo.com">
      <meta http-equiv="content-type" content="text/html; charset=UTF-8">
      <div class="yahoo-style-wrap" style="font-family:Helvetica Neue,
        Helvetica, Arial, sans-serif;font-size:13px;">
        <div dir="ltr" data-setdir="false">If you change from a 3.90 to
          a 3.54 rear end you lose most of 1st gear.  I changed my
          overdrive on my BJ8 to a BN2</div>
        <div dir="ltr" data-setdir="false">and in 4th gear overdrive my
          engine operates about 600 RPM lower.  It is a much better way
          to go.</div>
      </div>
      <br>
    </blockquote>
    <br>
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