<div dir="ltr">Curtis<div><br></div><div>There is another way of how one can get a close idea of what threads are used. All the body parts that were new in the 100 are UNF. However parts that were from Austin vehicles such as the engine, BN1 gearbox and early rear axle stayed at BSF. </div><div><br></div><div>'our' 100 engine went with only minor changes to become the 2.2 litre and 2.5 litre petrol engines that continued well into the 1960s. These continued BSF until phased out</div><div><br></div><div>Best regards</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, 10 May 2020 at 16:51, Curtis Arndt <<a href="mailto:cnaarndt@gmail.com">cnaarndt@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="auto">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 class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, May 9, 2020, 16:54 Perry via Healeys <<a href="mailto:healeys@autox.team.net" target="_blank">healeys@autox.team.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"><div lang="EN-US"><div><p class="MsoNormal">Michael</p><p class="MsoNormal">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 class="MsoNormal">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 class="MsoNormal">Perry</p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">Sent from <a href="https://go.microsoft.com/fwlink/?LinkId=550986" rel="noreferrer" target="_blank">Mail</a> for Windows 10</p><p class="MsoNormal"><u></u> <u></u></p><div style="border-right:none;border-bottom:none;border-left:none;border-top:1pt solid rgb(225,225,225);padding:3pt 0in 0in"><p class="MsoNormal" style="border:none;padding:0in"><b>From: </b><a href="mailto:rrengineer.mike@att.net" rel="noreferrer" target="_blank">Michael MacLean</a><br><b>Sent: </b>Saturday, May 9, 2020 5:14 PM<br><b>To: </b><a href="mailto:healeys@autox.team.net" rel="noreferrer" target="_blank">Healeys</a><br><b>Subject: </b>[Healeys] Motor Mout Bolts</p></div><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">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_-893876699217039575m_8389926694834509769yMail_cursorElementTracker_1589058832618"><p class="MsoNormal" style="margin-bottom:12pt">Mike MacLean<u></u><u></u></p></div><p class="MsoNormal"><a 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" rel="noreferrer" target="_blank">Sent from AT&T Yahoo Mail on Android</a></p><p class="MsoNormal"><u></u> <u></u></p></div></div>_______________________________________________<br>
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr">Best wishes<div><br></div><div>John Harper</div><div><br></div><div>AHC UK 100 Register Secretary</div></div></div>