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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: Kees Oudesluijs <coudesluijs@chello.nl>
Date: Thu, 22 Nov 2018 16:34:00 +0100
Delivered-to: mharc@autox.team.net
Delivered-to: healeys@autox.team.net
References: <001701d4826d$c8fbd360$5af37a20$@alexarevel.plus.com>
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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?ll 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 the 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 ?Why not tap 
> the holes??
>
> The holes on my HD6s are 11/32? 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? drill bit and tap them out to 7/16?. 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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    <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". <br>
    </p>
    <p>Kees Oudesluijs</p>
    <p><br>
    </p>
    <p><br>
    </p>
    <div class="moz-cite-prefix">Op 22-11-2018 om 15:15 schreef
      <a class="moz-txt-link-abbreviated" 
href="mailto:simon.lachlan@alexarevel.plus.com";>simon.lachlan@alexarevel.plus.com</a>:<br>
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        <p class="MsoNormal">I?ll be removing my carbs soon in order to
          achieve clearance for raising (the front of) the engine.
          (Harmonic balancer installation).<o:p></o:p></p>
        <p class="MsoNormal">So, it struck me that I may give my 3 HD6s
          another go. Swap them with the current setup.<o:p></o:p></p>
        <p class="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.<o:p></o:p></p>
        <p class="MsoNormal">I thought that I might put in helicoils
          then I thought ?Why not tap the holes??<o:p></o:p></p>
        <p class="MsoNormal">The holes on my HD6s are 11/32? or 
8.8mm.<o:p></o:p></p>
        <p class="MsoNormal">I am no engineer but it seems to me, from
          looking at tables on Google, that I could use a 25/64? drill
          bit and tap them out to 7/16?. I have both the drill and the
          tap but would like some expertise applied to the issue before
          I start drilling.<o:p></o:p></p>
        <p class="MsoNormal">Any input would be much appreciated.<o:p></o:p></p>
        <p class="MsoNormal">Thanks,<o:p></o:p></p>
        <p class="MsoNormal">Simon<o:p></o:p></p>
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      <pre class="moz-quote-pre" 
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