<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:"Trebuchet MS";
panose-1:2 11 6 3 2 2 2 2 2 4;}
@font-face
{font-family:Consolas;
panose-1:2 11 6 9 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;
color:black;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
pre
{mso-style-priority:99;
mso-style-link:"HTML Preformatted Char";
margin:0in;
margin-bottom:.0001pt;
font-size:10.0pt;
font-family:"Courier New";
color:black;}
span.HTMLPreformattedChar
{mso-style-name:"HTML Preformatted Char";
mso-style-priority:99;
mso-style-link:"HTML Preformatted";
font-family:Consolas;
color:black;}
p.msonormal0, li.msonormal0, div.msonormal0
{mso-style-name:msonormal;
mso-style-priority:99;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:11.0pt;
font-family:"Calibri",sans-serif;
color:black;}
span.EmailStyle21
{mso-style-type:personal;
font-family:"Calibri",sans-serif;}
span.EmailStyle22
{mso-style-type:personal;
font-family:"Calibri",sans-serif;
color:#1F497D;}
span.EmailStyle23
{mso-style-type:personal;
font-family:"Trebuchet MS",sans-serif;
font-weight:normal;
font-style:normal;}
span.EmailStyle25
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body bgcolor=white lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Valve clearances are not that critical. A smaller clearance will slightly lengthen the duration of the cam, while a larger clearance will shorten the duration. A larger clearance will also cause the valve opening to accelerate more quickly, so, the valve train must be up to the stress.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have run clearances all of the way from .006 to .020, depending on the cam and the effect, which I want to accomplish.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>When in doubt, set to the lash recommended by the cam manufacturer.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Regards,<o:p></o:p></p><p class=MsoNormal>Jim Hockert<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b>From:</b> Healeys <healeys-bounces@autox.team.net> <b>On Behalf Of </b>Bruce Steele<br><b>Sent:</b> Saturday, January 12, 2019 1:25 PM<br><b>To:</b> 'Bob Spidell' <bspidell@comcast.net>; healeys@autox.team.net<br><b>Subject:</b> Re: [Healeys] Valve clearances<o:p></o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Trebuchet MS",sans-serif'>I’m also running the DWR-1 cam and was also instructed to set all clearances at .015 cold.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Trebuchet MS",sans-serif'><o:p> </o:p></span></p><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Trebuchet MS",sans-serif;color:#1F497D'>Bruce Steele<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Trebuchet MS",sans-serif;color:#1F497D'>Brea, CA<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Trebuchet MS",sans-serif;color:#1F497D'>1960 BN7<o:p></o:p></span></p></div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Trebuchet MS",sans-serif'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b>From:</b> Healeys [<a href="mailto:healeys-bounces@autox.team.net">mailto:healeys-bounces@autox.team.net</a>] <b>On Behalf Of </b>Bob Spidell<br><b>Sent:</b> Saturday, January 12, 2019 8:52 AM<br><b>To:</b> <a href="mailto:healeys@autox.team.net">healeys@autox.team.net</a><br><b>Subject:</b> Re: [Healeys] Valve clearances<o:p></o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><p>Makes sense (for some reason). I put a DWR1 cam in my BJ8 which, according to DWR, 'is a little better than the BJ8 cam and so works well in any standard or mildly tuned car' but I think the 0.015" applies to all profiles on the spec sheet.<span style='font-size:12.0pt'><o:p></o:p></span></p><p>Bob<o:p></o:p></p><div><p class=MsoNormal>On 1/11/2019 8:48 PM, John Rowe wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal><span style='color:#1F497D'>Simon,</span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'>Modified cams require the large clearance (don’t ask me why?) So go for .015 that is what mine is.</span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'>John Rowe</span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'>Qld</span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'>Australia</span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma",sans-serif'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma",sans-serif'> Healeys [<a href="mailto:healeys-bounces@autox.team.net">mailto:healeys-bounces@autox.team.net</a>] <b>On Behalf Of </b><a href="mailto:simon.lachlan@alexarevel.plus.com">simon.lachlan@alexarevel.plus.com</a><br><b>Sent:</b> Saturday, 12 January 2019 9:14 AM<br><b>To:</b> Healeys<br><b>Subject:</b> [Healeys] Valve clearances</span><o:p></o:p></p></div></div><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal><span lang=EN-GB>The car is a MkII BT7.</span><o:p></o:p></p><p class=MsoNormal><span lang=EN-GB>The BMC manual says adjust the clearances, cold, to 0.012”.</span><o:p></o:p></p><p class=MsoNormal><span lang=EN-GB>Denis Welch said I should go 0.015”, cold, after fitting their “Fast Road” cam.</span><o:p></o:p></p><p class=MsoNormal><span lang=EN-GB>The rolling road guy said 0.016”, warm.</span><o:p></o:p></p><p class=MsoNormal><span lang=EN-GB> </span><o:p></o:p></p><p class=MsoNormal><span lang=EN-GB>I have the radiator out right now so I can get a nice socket onto that nut and have a go at the clearances.</span><o:p></o:p></p><p class=MsoNormal><span lang=EN-GB>Stick with 0.015”, cold?</span><o:p></o:p></p><p class=MsoNormal><span lang=EN-GB> </span><o:p></o:p></p><p class=MsoNormal><span lang=EN-GB>Thanks,</span><o:p></o:p></p><p class=MsoNormal><span lang=EN-GB>Simon</span><o:p></o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:12.0pt;font-family:"Times New Roman",serif'><o:p> </o:p></span></p><pre><o:p> </o:p></pre></blockquote></div></body></html>