<div dir="ltr"><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small">
<b><i>"So, now I can run a 3/8 - 20 UNF tap through the hole to clean it up.
So, I take it all threaded holes in the engine bay are UNF."</i></b></div><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small">I think that may be a stretch Mike ... I know, for example, that the nuts welded into the frame for the battery hold down rods changed from BSF to UNF as C.#156839. I would bet that there are other instances of this.</div><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small">I would always recommend checking your parts book for the correct thread for your car before running a tap through any.</div><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small">M<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, May 10, 2020 at 12:50 PM Michael MacLean <<a href="mailto:rrengineer.mike@att.net">rrengineer.mike@att.net</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">The only reason I asked this question in the first place was because a 3/8" UNF bolt screwed into all eight holes for a few threads and stopped. Because it was the same in all eight holes I did not want to force it. So, now I can run a 3/8 - 20 UNF tap through the hole to clean it up. So, I take it all threaded holes in the engine bay are UNF. Certainly simplifies it.<div id="gmail-m_-5974905000147687713yMail_cursorElementTracker_1589129381257">Mike MacLean<br><br><div id="gmail-m_-5974905000147687713ymail_android_signature"><a id="gmail-m_-5974905000147687713ymail_android_signature_link" href="https://go.onelink.me/107872968?pid=InProduct&c=Global_Internal_YGrowth_AndroidEmailSig__AndroidUsers&af_wl=ym&af_sub1=Internal&af_sub2=Global_YGrowth&af_sub3=EmailSignature" target="_blank">Sent from AT&T Yahoo Mail on Android</a></div> <br> <blockquote style="margin:0px 0px 20px"> <div style="font-family:Roboto,sans-serif;color:rgb(109,0,246)"> <div>On Sun, May 10, 2020 at 8:51 AM, Curtis Arndt</div><div><<a href="mailto:cnaarndt@gmail.com" target="_blank">cnaarndt@gmail.com</a>> wrote:</div> </div> <div style="padding:10px 0px 0px 20px;margin:10px 0px 0px;border-left:1px solid rgb(109,0,246)"> <div id="gmail-m_-5974905000147687713yiv7438463404"><div>They are UNF on my BN1 built 11 Jan. '55. If they ever were BSF, it was very early in BN1 production. </div><br><div><div dir="ltr">On Sat, May 9, 2020, 16:54 Perry via Healeys <<a rel="nofollow" href="mailto:healeys@autox.team.net" target="_blank">healeys@autox.team.net</a>> wrote:<br></div><blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div lang="EN-US"><div><p>Michael</p><p>There was a slow switch from BSF to UNF fasteners used and threads on some parts starting about mid 1954 through the end of 1955 at several locations on the 100. However I can not speak to the engine mount to chassis fasteners. </p><p>Its one of those areas of the car that if I ended up with damage to the welded nut threads that could not be cleaned up with a tap I would do what was necessary to secure the engine mount short of replacing the welded nut. </p><p>Perry</p><p><u></u> <u></u></p><p>Sent from <a rel="nofollow" href="https://go.microsoft.com/fwlink/?LinkId=550986" target="_blank">Mail</a> for Windows 10</p><p><u></u> <u></u></p><div style="border-color:rgb(225,225,225) currentcolor currentcolor;border-style:solid none none;border-width:1pt medium medium;padding:3pt 0in 0in"><p style="border:medium none;padding:0in"><b>From: </b><a rel="nofollow" href="mailto:rrengineer.mike@att.net" target="_blank">Michael MacLean</a><br><b>Sent: </b>Saturday, May 9, 2020 5:14 PM<br><b>To: </b><a rel="nofollow" href="mailto:healeys@autox.team.net" target="_blank">Healeys</a><br><b>Subject: </b>[Healeys] Motor Mout Bolts</p></div><p><u></u> <u></u></p><p>Are the bolts that fasten the motor mounts to the frame different threads between the BN1 and the BN2?<u></u><u></u></p><div id="gmail-m_-5974905000147687713yiv7438463404m_8389926694834509769yMail_cursorElementTracker_1589058832618"><p style="margin-bottom:12pt">Mike MacLean<u></u><u></u></p></div><p><a rel="nofollow" href="https://go.onelink.me/107872968?pid=InProduct&c=Global_Internal_YGrowth_AndroidEmailSig__AndroidUsers&af_wl=ym&af_sub1=Internal&af_sub2=Global_YGrowth&af_sub3=EmailSignature" target="_blank">Sent from AT&T Yahoo Mail on Android</a></p><p><u></u> <u></u></p></div></div>_______________________________________________<br>
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