<html><body>Just had a 100 engine to repair the oil feed pipe fitting on the rocker shaft 3rd block, and everyone might note that the thread for the special bolt is <b>3/8" x 26 HSS</b>. Helicoils are available for those who have "buggered" the fitting. Be careful when replacing this item on rebuild. Keep both ends loose until successfully threaded. The alloy rocker blocks are not easy to come by. Hank, healeyhelper.<br><br><div class="reply-new-signature"></div><p>-----------------------------------------</p>From: "Curtis Arndt" <cnaarndt@gmail.com><br>To: "Bob Spidell"<br>Cc: "Healeys"<br>Sent: Tuesday February 8 2022 11:28:21PM<br>Subject: Re: [Healeys] 100 Road draft (vent) pipe fasteners<br><br>
<div dir="ltr">Bob,
<div><br></div>
<div>If it's on the engine it's Whirworth, 1/4" BSF to be specific
in the question you asked for #74.</div>
<div><br></div>
<div>Cheers,</div>
<div><br></div>
<div>Curt.</div>
</div>
<br><div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Tue, Feb 8, 2022 at 3:58 PM
Bob Spidell <<a>bspidell@comcast.net</a>>
wrote:<br></div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px .8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex;">
Anyone know off-hand what type of fasteners are used, Whitworth, or
?<br><br>
Items# 72 & 76 in the Moss catalog page:<br><a href="https://mossmotors.com/external-engine-100-4"></a><a href="https://mossmotors.com/external-engine-100-4">https://mossmotors.com/external-engine-100-4</a><br><br>
TIA,<br>
Bob<br>
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