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--></style></head><body lang=EN-US link=blue vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Michael</p><p class=MsoNormal>100 Tappets- </p><p class=MsoNormal>Diameter 0.99875-0.99925</p><p class=MsoNormal>Length (overall) 3.02625-3.03675</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Six cylinder Tappets are slightly smaller diameter and nearly a ½ inch shorter. All six cylinder tappets have 8 holes. I do not have any 100 tappets out of an engine right now so the number of holes would have been an early morning unknown for me, except for a photo in my 100 Service Manual that shows the 100 tappets had 8 holes. <span style='font-family:"Segoe UI Emoji",sans-serif'>😊</span></p><p class=MsoNormal>Perry </p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Sent from <a href="https://go.microsoft.com/fwlink/?LinkId=550986">Mail</a> for Windows 10</p><p class=MsoNormal><o:p> </o:p></p><div style='mso-element:para-border-div;border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal style='border:none;padding:0in'><b>From: </b><a href="mailto:rrengineer.mike@att.net">Michael MacLean</a><br><b>Sent: </b>Sunday, May 3, 2020 1:46 AM<br><b>To: </b><a href="mailto:healeys@autox.team.net">Healeys</a><br><b>Subject: </b>[Healeys] Saturday Night Rant</p></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Here's today's Healey 100 rant. As you can see in the picture of the eight lifters, two are not the same as the rest. I bought these several years ago from Vicky Brit and they all had the same part number, but they are not the same. Two of them have eight holes in the body. The rest have three holes. The two that are different are almost an eighth of an inch shorter than the other six. That can't be good. These are the things I run into that slows progress on this engine. I suspect the two different ones are for a different application. Can someone tell me what the correct overall height of a 100-4 cam follower is? For all I know I might only have two correct lifters.<o:p></o:p></p><div id="yMail_cursorElementTracker_1588479146474"><p class=MsoNormal>Mike MacLean<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal style='margin-bottom:12.0pt'><br><br></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">Sent from AT&T Yahoo Mail on Android</a></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>