<div dir="auto">Gm did that to rationalize tools as you say, but save money on not converting thread and pitch to metric. I had a 87 Olds with that exact situation. But also standards bolts heads too in some areas. <br><br><div data-smartmail="gmail_signature">Ira Erbs<br>Portland,OR<br>59 BN4<br>67MGB<br>65 AH Sprite<br>phone makes it's own choices. Forgive typos</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Apr 23, 2020, 11:39 AM WILLIAM B LAWRENCE <<a href="mailto:ynotink@msn.com">ynotink@msn.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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In the midst of my recent Rover V8 rebuild I was surprised to discover that while all of the fasteners used metric wrench sizes many in the short block used the UNC thread type ie: a 3/8" coarse bolt with a 13 mm head. I assume that Rover simply continued the
UNC pattern of the original GM castings and changed the head size to simplify tool inventory.</div>
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Bill Lawrence</div>
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BN1 #554</div>
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<div id="m_2173325284267159273divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Healeys <<a href="mailto:healeys-bounces@autox.team.net" target="_blank" rel="noreferrer">healeys-bounces@autox.team.net</a>> on behalf of <a href="mailto:simon.lachlan@alexarevel.plus.com" target="_blank" rel="noreferrer">simon.lachlan@alexarevel.plus.com</a> <<a href="mailto:simon.lachlan@alexarevel.plus.com" target="_blank" rel="noreferrer">simon.lachlan@alexarevel.plus.com</a>><br>
<b>Sent:</b> Thursday, April 23, 2020 12:20 AM<br>
<b>To:</b> 'Patrick & Caroline Quinn' <<a href="mailto:p_cquinn@tpg.com.au" target="_blank" rel="noreferrer">p_cquinn@tpg.com.au</a>><br>
<b>Cc:</b> 'Healeys' <<a href="mailto:healeys@autox.team.net" target="_blank" rel="noreferrer">healeys@autox.team.net</a>><br>
<b>Subject:</b> Re: [Healeys] Today's Rant</font>
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<p><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">I have a vague memory of what we called “Transitional Rovers” ie a mix of Imperial and Metric. All
</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">¾</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> tonner long wheel-base. All UK based. They may have been peculiar to the army.</span></p>
<p><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Glad I wasn’t in REME…..they had to maintain them.</span></p>
<p><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Simon</span></p>
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<p><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Healeys <<a href="mailto:healeys-bounces@autox.team.net" target="_blank" rel="noreferrer">healeys-bounces@autox.team.net</a>>
<b>On Behalf Of </b>Patrick & Caroline Quinn<br>
<b>Sent:</b> 23 April 2020 00:23<br>
<b>To:</b> 'David Nock' <<a href="mailto:healeydoc@gmail.com" target="_blank" rel="noreferrer">healeydoc@gmail.com</a>>; 'Michael MacLean' <<a href="mailto:rrengineer.mike@att.net" target="_blank" rel="noreferrer">rrengineer.mike@att.net</a>><br>
<b>Cc:</b> 'Healeys' <<a href="mailto:healeys@autox.team.net" target="_blank" rel="noreferrer">healeys@autox.team.net</a>><br>
<b>Subject:</b> Re: [Healeys] Today's Rant</span></p>
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<p><span lang="EN-AU" style="font-size:11.0pt">G’day</span></p>
<p><span lang="EN-AU" style="font-size:11.0pt"> </span></p>
<p><span lang="EN-AU" style="font-size:11.0pt">Not long after I bought my first 100 back in 1972 I turned 21 and one of the birthday gifts I received was a set of BSF spanners and sockets. I still have them.</span></p>
<p><span lang="EN-AU" style="font-size:11.0pt"> </span></p>
<p><span lang="EN-AU" style="font-size:11.0pt">Now I have three sets of tools. BSF for the Healey Saloon. AF for the 100 BN3 and metric for the Hilux, Mercedes and around the house. There are many variations of each for specific purposes.</span></p>
<p><span lang="EN-AU" style="font-size:11.0pt"> </span></p>
<p><span lang="EN-AU" style="font-size:11.0pt">Hoo Roo</span></p>
<p><span lang="EN-AU" style="font-size:11.0pt"> </span></p>
<p><span lang="EN-AU" style="font-size:11.0pt">Patrick Quinn</span></p>
<p><span lang="EN-AU" style="font-size:11.0pt">Blue Mountains, Australia</span></p>
<p><span lang="EN-AU" style="font-size:11.0pt"> </span></p>
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<p><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma",sans-serif">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma",sans-serif"> Healeys [<a href="mailto:healeys-bounces@autox.team.net" target="_blank" rel="noreferrer">mailto:healeys-bounces@autox.team.net</a>]
<b>On Behalf Of </b>David Nock<br>
<b>Sent:</b> Wednesday, 22 April 2020 11:59 PM<br>
<b>To:</b> Michael MacLean<br>
<b>Cc:</b> Healeys<br>
<b>Subject:</b> Re: [Healeys] Today's Rant</span></p>
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<p><span lang="EN-AU"> </span></p>
<p><span lang="EN-AU">All the threads on the 100/4 engine are BSF not Whitworth. Whitworth is a coarse thread. </span></p>
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<p><span lang="EN-AU">However the wrench sizes are interchangeable. They are one size apart from each other. </span></p>
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<p><span lang="EN-AU"> </span></p>
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<p style="margin-bottom:12.0pt"><span lang="EN-AU">The threads on the small plate are 1/4 bsf and the gen bracket is 5/16 bsf. Also look close there are some of the studs that go thru into the cooling system. </span></p>
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<p><span lang="EN-AU">David Nock</span></p>
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<p><span lang="EN-AU"> </span></p>
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<p><span lang="EN-AU">Sent from my iPhone</span></p>
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<p style="margin-bottom:12.0pt"><span lang="EN-AU"> </span></p>
<p style="margin-bottom:12.0pt"><span lang="EN-AU">On Apr 21, 2020, at 10:18 PM, Michael MacLean <<a href="mailto:rrengineer.mike@att.net" target="_blank" rel="noreferrer">rrengineer.mike@att.net</a>> wrote:</span></p>
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<p><span lang="EN-AU" style="font-family:"Tahoma",sans-serif"></span><span lang="EN-AU"></span></p>
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<p><span lang="EN-AU">So, I am getting ready to install the head on my 100 short block. Made sure all the intake valves have the new seals I bought from British Car Specialists plus the new set of springs I already had for the valves.
The two mating surfaces were cleaned with a white (finest grit) Roloc brush. I have the correct head gasket (copper faced). Tonight was the night to torque the head down to the block. My surprise, for some stupid reason I only ordered 8 new head nuts.
I managed to order the correct amount of washer for the head. No idea what my pea brain was thinking. Also found out the head nuts are Whitworth (3/8") size. I have a Whitworth socket set, so tragedy averted there. I seem to remember someone talking about
the water jacket blanking plate earlier this week. That made me look at the front of my block. Three studs and an empty hole. No cover. I managed to find two blanking covers in my stash of parts and a gasket in my gasket set. Woohoo, but no nuts or lock
washers. Can someone tell me if these little nuts that I do not have are Whitworth nuts. If so, what size? I have a generator bracket, but there are no threaded studs for the block or nuts to mount it with. Once again, Whitworth? The closer I get to putting
this together the more stuff I find out I don't have.</span></p>
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<p><span lang="EN-AU">Mike MacLean</span></p>
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