Subject: [Healeys] Locking Crank

From: Roger Grace <[email-masked]>
Date: Wed, 8 Apr 2026 08:05:07 -0700

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Had a bit of a mishap with my BJ8 engine that is installed in the car.
Drive shaft and gearbox in place and tunnel off.
Need to re-tighten the crank nut.
So how is the easiest way to lock the crank ?
Is it safe (no damage) to lock the prop shaft flange and in 4th gear ?
Thank you
rg

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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-size:small">Had=
 a bit of a mishap with my BJ8 engine that is installed in the car.</div><d=
iv class=3D"gmail_default" style=3D"font-size:small">Drive shaft and gearbo=
x in place and tunnel off.</div><div class=3D"gmail_default" style=3D"font-=
size:small">Need to re-tighten=C2=A0the crank nut.</div><div class=3D"gmail=
_default" style=3D"font-size:small">So how is the easiest way to lock the c=
rank ?</div><div class=3D"gmail_default" style=3D"font-size:small">Is it sa=
fe (no damage) to lock the prop shaft flange and in 4th gear ?</div><div cl=
ass=3D"gmail_default" style=3D"font-size:small">Thank you</div><div class=
=3D"gmail_default" style=3D"font-size:small">rg</div></div><div id=3D"DAB4F=
AD8-2DD7-40BB-A1B8-4E2AA1F9FDF2"><br><table style=3D"border-top:1px solid #=
d3d4de"><tr><td style=3D"width:55px;padding-top:13px"><a href=3D"http://www=
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t: 29px;"></a></td><td style=3D"width:470px;padding-top:12px;color:#41424e;=
font-size:13px;font-family:Arial,Helvetica,sans-serif;line-height:18px">Vir=
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_______________________________________________

Archive: http://www.team.net/pipermail/healeys http://autox.team.net/archive/healeys

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From: Hank Leach via Healeys <[email-masked]>
Date: Wed, 08 Apr 2026 17:22:31 +0000 uJhOYzV1E0HHnxcmQ3FLezY8ndmxGYEIEy/uSaF3nVun8y+ilEPUfN8qWi6FS6bBHLOiytupkWXyhRElI1CZfmofFMP4/Y5+kX7nupFNqne4amawdtSr6DAc K6vk0Qr6jjsUjYNNuEjAzbR8v6lVU29812WSjMS7huY=

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<div>I like wood on crank journal-no pressure on drive train. =
Hank<br>-------------------- <br><br>From: "Simon Lachlan via Healeys" =
&lt;[email-masked]&gt; <br>Reply-To: &lt;simon.lachlan@alexarevel.=
plus.com&gt; <br>To: "'Roger Grace'" &lt;[email-masked]&gt;, =
"'Healeys'" &lt;[email-masked]&gt; <br>Sent: April 8, 2026 at 9:38 =
AM PDT <br>Subject: Re: [Healeys] Locking Crank </div>
<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span =
style=3D"mso-fareast-language: EN-US;">If(!) my memory t serves me right, =
you can take the sump off and jam it with a piece of wood.</span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language: =
EN-US;">Otherwise, maybe get something to lock the flywheel. Per attached. =
I used this for work on the clutch but should do the job?</span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language: EN-US;">Years =
ago, I put a massive spanner on the nut and clouted it with a big hammer. =
Yes, the crank moved but the nut surely tightened up. It is an absolute =
beast of a spanner&hellip;open-ended, just one end. Heavy as anything, =
looks like something out of a Challenger tank&rsquo;s toolkit.</span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language: EN-US;">Have =
fun. Simon</span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-lan=
guage: EN-US;">&nbsp;</span></p>
<p class=3D"MsoNormal"><span =
style=3D"mso-fareast-language: EN-US;">&nbsp;</span></p>
<div style=3D"border: none; border-top: solid #E1E1E1 1.0pt; padding: 3.0pt=
 0cm 0cm 0cm; font-size: pt;">
<p class=3D"MsoNormal"><strong><span =
style=3D"font-family: 'Calibri',sans-serif;">From:</span></strong><span =
style=3D"font-family: 'Calibri',sans-serif;"> Healeys =
&lt;[email-masked]&gt; <strong>On Behalf Of </strong>Roger =
Grace<br><strong>Sent:</strong> 08 April 2026 16:05<br><strong>To:</strong>=
 Healeys &lt;[email-masked]&gt;<br><strong>Subject:</strong> =
[Healeys] Locking Crank</span></p>
</div>
<p class=3D"MsoNormal">&nbsp;</p>
<div>
<div>
<p class=3D"MsoNormal">Had a bit of a mishap with my BJ8 engine=
 that is installed in the car.</p>
</div>
<div>
<p class=3D"MsoNormal">Driv=
e shaft and gearbox in place and tunnel off.</p>
</div>
<div>
<p class=3D"MsoNormal">Need to re-tighten&nbsp;the crank nut.</p>
</div>
<div>
<p class=3D"MsoNormal">So how is the easiest way to lock the crank ?=
</p>
</div>
<div>
<p class=3D"MsoNormal">Is it safe (no damage) to lock the=
 prop shaft flange and in 4th gear ?</p>
</div>
<div>
<p class=3D"MsoNormal">Thank you</p>
</div>
<div>
<p =
class=3D"MsoNormal">rg</p>
</div>
</div>
<div id=3D"DAB4FAD8-2DD7-40BB-A1B8=
-4E2AA1F9FDF2">
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color: #41424e;">Virus-free.<a href=3D"http://www.avg.com/email-signature?=
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<div>&nbsp;</div>

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[email-masked]

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From: Hank Leach via Healeys <[email-masked]>
Date: Wed, 08 Apr 2026 19:31:53 +0000 3wxDPZaS33Y1YxHhvBz2DXQfRoy4mcuBCe/DzV60op4i7RhgE82YY4F3GuCKxWDl/4aV059DfaLyJnUVvOl5O+xdrmBM/4dut7oBbNu4QXMY4RLH8qqTcXpl ANPYKPj24Y+TeP2BWECEAOPrL5ZJrNnLIWxzSVBKJzQPLYGPMBJynX0B1WQqXaN9xatMkt2RnSBEqd9+0ZvDyA==

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<div>I have this tool-a Proto reject that I got at a swap meet. No need to =
raise engine but it works best for rebuilds using a wood block on crank =
journal.</div>
<div>I wonder what happened to the locktab which should keep=
 the nut tight? Moss has it fits both 100 and 3000:</div>
<div>
<div class=3D"schematic-table__cell sku-cell" role=3D"cell"><a =
href=3D"https://mossmotors.com/837-090-lock-tab-crankshaft-dog-nut">837-090=
</a></div>
<div class=3D"schematic-table__cell description-cell" =
role=3D"cell">
<div class=3D"description-wrapper"><img =
class=3D"product-image" src=3D"https://mossmotors.com/media/catalog/product=
/8/3/837-090_1.jpg?width=3D75&amp;height=3D75&amp;canvas=3D75,=
75&amp;optimize=3Dmedium&amp;bg-color=3D255,255,255&amp;fit=3Dbounds" =
alt=3D"LOCK TAB"><a href=3D"https://mossmotors.com/837-090-lock-tab-cranksh=
aft-dog-nut">LOCK TAB</a></div>
</div>
</div>
<div><br>--------------------=
 <br><br>From: "Michael Salter" &lt;[email-masked]&gt; <br>To: =
&lt;[email-masked]&gt;, "'Roger Grace'" =
&lt;[email-masked]&gt;, "'Healeys'" &lt;[email-masked]&gt; =
<br>Sent: April 8, 2026 at 12:16 PM PDT <br>Subject: Re: [Healeys] Locking =
Crank </div>
<div style=3D"font-family: Aptos, Aptos_MSFontService, =
-apple-system, Roboto, Arial, Helvetica, sans-serif; font-size: 12pt; =
color: rgb(33, 33, 33);">The factory tool was a "slugging wrench", pic =
attached.&nbsp;</div>
<div style=3D"font-family: Aptos, Aptos_MSFontService=
, -apple-system, Roboto, Arial, Helvetica, sans-serif; font-size: 12pt; =
color: rgb(33, 33, 33);">The rotating assembly of a Healey engine has =
significant inertia so using this tool precludes the necessity to "lock" it=
.</div>
<div id=3D"ms-outlook-mobile-body-separator-line" =
style=3D"font-family: Aptos, Aptos_MSFontService, -apple-system, Roboto, =
Arial, Helvetica, sans-serif; font-size: 12pt;">
<div style=3D"font-family:=
 Aptos, Aptos_MSFontService, -apple-system, Roboto, Arial, Helvetica, =
sans-serif; font-size: 12pt;">&nbsp;</div>
</div>
<div =
id=3D"ms-outlook-mobile-signature" style=3D"font-family: Aptos, =
Aptos_MSFontService, -apple-system, Roboto, Arial, Helvetica, sans-serif; =
font-size: 12pt;">
<div style=3D"font-family: Aptos, Aptos_MSFontService, =
-apple-system, Roboto, Arial, Helvetica, sans-serif; font-size: =
12pt;">&nbsp;</div>
</div>
<hr style=3D"display: inline-block; width: =
98%;">
<div id=3D"divRplyFwdMsg"><strong>From:</strong> Healeys =
&lt;[email-masked]&gt; on behalf of Simon Lachlan via =
Healeys &lt;[email-masked]&gt;<br><strong>Sent:</strong> Wednesday,=
 April 8, 2026 12:20:21 PM<br><strong>To:</strong> 'Roger Grace' =
&lt;[email-masked]&gt;; 'Healeys' &lt;[email-masked].=
net&gt;<br><strong>Subject:</strong> Re: [Healeys] Locking Crank
<div>&nbsp;</div>
</div>
<div style=3D"word-wrap: break-word;">
<div class=3D"x_WordSection1">
<p class=3D"x_MsoNormal">If(!) my memory t =
serves me right, you can take the sump off and jam it with a piece of wood.=
</p>
<p class=3D"x_MsoNormal">Otherwise, maybe get something to lock the =
flywheel. Per attached. I used this for work on the clutch but should do =
the job?</p>
<p class=3D"x_MsoNormal">Years ago, I put a massive spanner on=
 the nut and clouted it with a big hammer. Yes, the crank moved but the nut=
 surely tightened up. It is an absolute beast of a spanner&hellip;open-ende=
d, just one end. Heavy as anything, looks like something out of a =
Challenger tank&rsquo;s toolkit.</p>
<p class=3D"x_MsoNormal">Have fun. =
Simon</p>
<p class=3D"x_MsoNormal">&nbsp;</p>
<p class=3D"x_MsoNormal">&nbs=
p;</p>
<div style=3D"border: none; border-top: solid #E1E1E1 1.0pt; =
padding: 3.0pt 0cm 0cm 0cm; font-size: pt;">
<p class=3D"x_MsoNormal"><stro=
ng><span style=3D"font-family: 'Calibri',sans-serif;">From:</span></strong>=
<span style=3D"font-family: 'Calibri',sans-serif;"> Healeys =
&lt;[email-masked]&gt; <strong>On Behalf Of </strong>Roger =
Grace<br><strong>Sent:</strong> 08 April 2026 16:05<br><strong>To:</strong>=
 Healeys &lt;[email-masked]&gt;<br><strong>Subject:</strong> =
[Healeys] Locking Crank</span></p>
</div>
<p class=3D"x_MsoNormal">&nbsp;</=
p>
<div>
<div>
<p class=3D"x_MsoNormal">Had a bit of a mishap with my BJ8 =
engine that is installed in the car.</p>
</div>
<div>
<p class=3D"x_MsoNormal">Drive shaft and gearbox in place and tunnel off.=
</p>
</div>
<div>
<p class=3D"x_MsoNormal">Need to re-tighten&nbsp;the =
crank nut.</p>
</div>
<div>
<p class=3D"x_MsoNormal">So how is the easiest =
way to lock the crank ?</p>
</div>
<div>
<p class=3D"x_MsoNormal">Is it =
safe (no damage) to lock the prop shaft flange and in 4th gear ?</p>
</div>
<div>
<p class=3D"x_MsoNormal">Thank you</p>
</div>
<div>
<p class=3D"x_MsoNormal">rg</p>
</div>
</div>
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BB-A1B8-4E2AA1F9FDF2">
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