<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">Hello Guy,<div>That is a tough one. Have you considered talking this over with the machinist that did your cylinder head as he may have come across this type of issue before. I agree with you that locating and holding the X, Y and Z positions of the repair is critical. </div><div>Best of luck to you.</div><div>Dave Connitt <br><br><div dir="ltr">Sent from my iPhone</div><div dir="ltr"><br><blockquote type="cite">On Dec 11, 2021, at 6:35 PM, Guy Huggins <guy.huggins@icloud.com> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr"><meta http-equiv="Content-Type" content="text/html; charset=utf-8">Howdy All,<div class=""><br class=""></div><div class="">As part the head gasket replacement project, I need to address a wallowed-out and stripped cylinder head stud hole in the block.</div><div class="">(If you were standing on the manifold side of the engine, it would be the one furtherest to the front, on the manifold side.)</div><div class=""><br class=""></div><div class="">A stud goes in straight up and down until the top of the threads are even with the block, but it wiggles like hell.</div><div class="">As you tighten the stud down further, the wiggle starts to go away, but the whole thing starts to cant back toward the rear of the block.</div><div class="">This make it impossible to slide the head down over the canted stud.</div><div class=""><br class=""></div><div class="">To fix this I intend to install a coiled insert. (drill just 1/32” oversized, tap, install insert).</div><div class="">I am hoping that someone from the list knows of a drilling jig/guide for the drilling phase.</div><div class="">I know better than to attempt drilling out cast iron without a steadying device of some sort.</div><div class=""><br class=""></div><div class="">Any and all tips and advice are welcome.</div><div class=""><br class=""></div><div class="">The hole is 1 5/16” deep, and the threads of the stud measure 3/4”.</div><div class="">It is basically threaded top to bottom.</div><div class=""><br class=""></div><div class="">Thanks in advance.</div><div class="">I hate it when you have to fix the unknown thing to fix the known thing.</div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><div class="">
<div style="color: rgb(0, 0, 0); letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;">Kind Regards,<br class=""><br class="">Guy D. Huggins<br class=""><a href="mailto:guy.huggins@icloud.com" class="">guy.huggins@icloud.com</a><br class="">817.454.6415</div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><br class=""></div><br class="Apple-interchange-newline"></div></div><br class="Apple-interchange-newline"><br class="Apple-interchange-newline">
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