<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">A “proper” HD8 has an actual idle circuit which was removed for the P6 application.<div><br></div><div>Yours</div><div>Vern<br><div><br><blockquote type="cite"><div>On Oct 6, 2024, at 8:24 AM, Tom Rymes via Rovernet <rovernet@rovernet.org> wrote:</div><br class="Apple-interchange-newline"><div><meta http-equiv="content-type" content="text/html; charset=utf-8"><div dir="auto"><div dir="ltr"></div><div dir="ltr">I remember an incident when a friend asked me about HD8s from an early 2000TC like mine. He was putting three of them on an Austin Healey, but it turns out that Rover had made modifications from a garden-variety HD8, IIRC, which was causing issues with making them work on the AH.</div><div dir="ltr"><br></div><div dir="ltr">Does anyone have details?</div><div dir="ltr"><br></div><div dir="ltr">Tim</div><div dir="ltr"><br><blockquote type="cite">On Oct 6, 2024, at 7:20 AM, Steven Dibdin via Rovernet <rovernet@rovernet.org> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr"><meta http-equiv="content-type" content="text/html; charset=utf-8">Because bigger isn’t always better for carbs. You’ll have more power at higher revs, but less torque at lower and mid range, it’s also why the idle on a 2000TC is rougher than on a 2200TC with HIF6s. Lower air velocity over the jet meant less effective fuel mixing at partial throttle openings. <div><br></div><div>S-</div><div><br id="lineBreakAtBeginningOfSignature"><div dir="ltr">Sent from a small screen, please excuse any typos. </div><div dir="ltr"><br><blockquote type="cite">On Oct 6, 2024, at 01:07, pierre janusz via Rovernet <rovernet@rovernet.org> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr"><div class="ydp564c9920yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:16px;"><div></div>
<div>Why not just for more power?</div><div><br></div>
<div id="ydp564c9920yahoo_quoted_8874185357" class="ydp564c9920yahoo_quoted">
<div style="font-family:'Helvetica Neue', Helvetica, Arial, sans-serif;font-size:13px;color:#26282a;">
<div>
On Saturday 5 October 2024 at 19:58:40 GMT-7, Gordon Reddy via Rovernet <rovernet@rovernet.org> wrote:
</div>
<div><br></div>
<div><br></div>
<div><div id="ydp564c9920yiv9066423045"><div><div dir="ltr"><div style="font-family:arial, sans-serif;font-size:large;" class="ydp564c9920yiv9066423045gmail_default">Yes, thats what I remember, rpm related lean mixture and engine damage. Thanks Steve!</div><div style="font-family:arial, sans-serif;font-size:large;" class="ydp564c9920yiv9066423045gmail_default">Gord<br clear="none"></div></div><br clear="none"><div id="ydp564c9920yiv9066423045yqt84767" class="ydp564c9920yiv9066423045yqt1531326748"><div class="ydp564c9920yiv9066423045gmail_quote"><div dir="ltr" class="ydp564c9920yiv9066423045gmail_attr">On Sat, 5 Oct 2024 at 10:30, Steven Dibdin <<a shape="rect" href="mailto:sdibdin@gmail.com" rel="nofollow" target="_blank">sdibdin@gmail.com</a>> wrote:<br clear="none"></div><blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex;" class="ydp564c9920yiv9066423045gmail_quote"><div>There’s some evidence that they went for the 2” Days because harmonics at higher revs caused the pistons to drop in 1.75” carbs. That leaned out the mixed and burnt holes in the engine pistons. The larger carbs could handle the resonance and stay stable. <br clear="none" id="ydp564c9920yiv9066423045m_8955987948663567688lineBreakAtBeginningOfSignature"><div dir="ltr">Sent from a small screen, please excuse any typos. </div><div dir="ltr"><br clear="none"><blockquote type="cite">On Oct 5, 2024, at 13:14, Gordon Reddy via Rovernet <<a shape="rect" href="mailto:rovernet@rovernet.org" rel="nofollow" target="_blank">rovernet@rovernet.org</a>> wrote:<br clear="none"><br clear="none"></blockquote></div><blockquote type="cite"><div dir="ltr"><div dir="ltr"><div style="font-family:arial, sans-serif;font-size:large;" class="ydp564c9920yiv9066423045gmail_default">Hi All,</div><div style="font-family:arial, sans-serif;font-size:large;" class="ydp564c9920yiv9066423045gmail_default"> I am sure this question has been regularly posted in the past but here it is again. Why the 2" carbs on a 2 litre engine? Rover never did anything without a good reason. I believe I read somewhere in the dim, dark past it was because of a lean spot in the rpm range???</div><div style="font-family:arial, sans-serif;font-size:large;" class="ydp564c9920yiv9066423045gmail_default">Cheers,</div><div style="font-family:arial, sans-serif;font-size:large;" class="ydp564c9920yiv9066423045gmail_default">Gord<br clear="none"></div></div>
<span>_______________________________________________</span><br clear="none"><span>Rovernet mailing list</span><br clear="none"><span><a shape="rect" href="mailto:Rovernet@rovernet.org" rel="nofollow" target="_blank">Rovernet@rovernet.org</a></span><br clear="none"><span><a shape="rect" href="http://rovernet.org/mailman/listinfo/rovernet_rovernet.org" rel="nofollow" target="_blank">http://rovernet.org/mailman/listinfo/rovernet_rovernet.org</a></span><br clear="none"></div></blockquote></div></blockquote></div></div>
</div></div><div class="ydp564c9920yqt1531326748" id="ydp564c9920yqt28715">_______________________________________________<br clear="none">Rovernet mailing list<br clear="none"><a shape="rect" href="mailto:Rovernet@rovernet.org" rel="nofollow" target="_blank">Rovernet@rovernet.org</a><br clear="none"><a shape="rect" href="http://rovernet.org/mailman/listinfo/rovernet_rovernet.org" rel="nofollow" target="_blank">http://rovernet.org/mailman/listinfo/rovernet_rovernet.org</a><br clear="none"></div></div>
</div>
</div></div><span>_______________________________________________</span><br><span>Rovernet mailing list</span><br><span>Rovernet@rovernet.org</span><br><span>http://rovernet.org/mailman/listinfo/rovernet_rovernet.org</span><br></div></blockquote></div><span>_______________________________________________</span><br><span>Rovernet mailing list</span><br><span>Rovernet@rovernet.org</span><br><span>http://rovernet.org/mailman/listinfo/rovernet_rovernet.org</span><br></div></blockquote></div>_______________________________________________<br>Rovernet mailing list<br>Rovernet@rovernet.org<br>http://rovernet.org/mailman/listinfo/rovernet_rovernet.org<br></div></blockquote></div><br><div>
<span><img alt="E-mail Signature logo.png" src="cid:39F9545A-D2E0-4B5C-B4C9-DF94AEBF87C1@aebc.com,cipherkey.com"></span><br class="Apple-interchange-newline"><span style="caret-color: rgb(229, 0, 0); color: rgb(229, 0, 0); font-family: HelveticaNeueLTStd-Hv; font-size: large; font-style: normal; font-variant-caps: normal; font-weight: bold; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; text-decoration: none; display: inline !important; float: none;">inkspotco.com · 250 864 5619 · in@inkspotco.com</span>
</div>
<br></div></body></html>