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Re: [Healeys] Tapping SUs for air filters.

To: healeys@autox.team.net
Subject: Re: [Healeys] Tapping SUs for air filters.
From: Michael Salter <michael.salter@gmail.com>
Date: Thu, 22 Nov 2018 11:04:13 -0500
Delivered-to: mharc@autox.team.net
Delivered-to: healeys@autox.team.net
References: <001701d4826d$c8fbd360$5af37a20$@alexarevel.plus.com> <a87631dd-f8f2-327f-7521-2bcd7c063f7a@chello.nl>
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Just remember that if you or anyone else decides to revert to original
filters it may be difficult to position them correctly
.

M

On Thu, Nov 22, 2018, 10:50 AM Kees Oudesluijs <coudesluijs@chello.nl wrote=
:

> That thread is way to large to use, that would be equivalent to M10. The
> normal size would be M6 or about 1/4".
>
> Kees Oudesluijs
>
>
>
> Op 22-11-2018 om 15:15 schreef simon.lachlan@alexarevel.plus.com:
>
> I=E2=80=99ll be removing my carbs soon in order to achieve clearance for =
raising
> (the front of) the engine. (Harmonic balancer installation).
>
> So, it struck me that I may give my 3 HD6s another go. Swap them with the
> current setup.
>
> Thinking it through and looking at the big box of bits, I recalled what a
> pain it is to get the nuts and two washers onto the bolts that hold on th=
e
> air filters. I have French manufactured K&N lookalikes. The bolt starts
> inside the filter, goes through the carb and gets two washers and a nut.
> Very awkward to deal with those nuts and washers. PITA.
>
> I thought that I might put in helicoils then I thought =E2=80=9CWhy not t=
ap the
> holes?=E2=80=9D
>
> The holes on my HD6s are 11/32=E2=80=9D or 8.8mm.
>
> I am no engineer but it seems to me, from looking at tables on Google,
> that I could use a 25/64=E2=80=9D drill bit and tap them out to 7/16=E2=
=80=9D. I have both
> the drill and the tap but would like some expertise applied to the issue
> before I start drilling.
>
> Any input would be much appreciated.
>
> Thanks,
>
> Simon
>
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<div dir=3D"auto">Just remember that if you or anyone else decides to rever=
t to original filters it may be difficult to position them correctly=C2=A0<=
div dir=3D"auto">.</div><div dir=3D"auto"><br></div><div dir=3D"auto">M</di=
v></div><br><div class=3D"gmail_quote"><div dir=3D"ltr">On Thu, Nov 22, 201=
8, 10:50 AM Kees Oudesluijs &lt;<a href=3D"mailto:coudesluijs@chello.nl";>co=
udesluijs@chello.nl</a> wrote:<br></div><blockquote class=3D"gmail_quote" s=
tyle=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
 =20
   =20
 =20
  <div text=3D"#000000" bgcolor=3D"#FFFFFF">
    <p>That thread is way to large to use, that would be equivalent to
      M10. The normal size would be M6 or about 1/4&quot;. <br>
    </p>
    <p>Kees Oudesluijs</p>
    <p><br>
    </p>
    <p><br>
    </p>
    <div class=3D"m_-5243863183666024240moz-cite-prefix">Op 22-11-2018 om 1=
5:15 schreef
      <a class=3D"m_-5243863183666024240moz-txt-link-abbreviated" href=3D"m=
ailto:simon.lachlan@alexarevel.plus.com" target=3D"_blank" rel=3D"noreferre=
r">simon.lachlan@alexarevel.plus.com</a>:<br>
    </div>
    <blockquote type=3D"cite">
     =20
     =20
     =20
      <div class=3D"m_-5243863183666024240WordSection1">
        <p class=3D"MsoNormal">I=E2=80=99ll be removing my carbs soon in or=
der to
          achieve clearance for raising (the front of) the engine.
          (Harmonic balancer installation).<u></u><u></u></p>
        <p class=3D"MsoNormal">So, it struck me that I may give my 3 HD6s
          another go. Swap them with the current setup.<u></u><u></u></p>
        <p class=3D"MsoNormal">Thinking it through and looking at the big
          box of bits, I recalled what a pain it is to get the nuts and
          two washers onto the bolts that hold on the air filters. I
          have French manufactured K&amp;N lookalikes. The bolt starts
          inside the filter, goes through the carb and gets two washers
          and a nut. Very awkward to deal with those nuts and washers.
          PITA.<u></u><u></u></p>
        <p class=3D"MsoNormal">I thought that I might put in helicoils
          then I thought =E2=80=9CWhy not tap the holes?=E2=80=9D<u></u><u>=
</u></p>
        <p class=3D"MsoNormal">The holes on my HD6s are 11/32=E2=80=9D or 8=
.8mm.<u></u><u></u></p>
        <p class=3D"MsoNormal">I am no engineer but it seems to me, from
          looking at tables on Google, that I could use a 25/64=E2=80=9D dr=
ill
          bit and tap them out to 7/16=E2=80=9D. I have both the drill and =
the
          tap but would like some expertise applied to the issue before
          I start drilling.<u></u><u></u></p>
        <p class=3D"MsoNormal">Any input would be much appreciated.<u></u><=
u></u></p>
        <p class=3D"MsoNormal">Thanks,<u></u><u></u></p>
        <p class=3D"MsoNormal">Simon<u></u><u></u></p>
      </div>
      <br>
      <fieldset class=3D"m_-5243863183666024240mimeAttachmentHeader"></fiel=
dset>
      <pre class=3D"m_-5243863183666024240moz-quote-pre">__________________=
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