<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">I'm running valve seat pressure of 110 lbs closed and 285 lbs open @.500 lift on my TR6 race engine.<br><div><div>On Sep 16, 2015, at 8:57 AM, Kas Kastner wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div dir="ltr"><br clear="all"><div><div class="gmail_signature"><p><strong><font color="#000099">Never be beaten by equipment.</font></strong></p></div></div> <br><div class="gmail_quote">---------- Forwarded message ----------<br>From: <b class="gmail_sendername">Kas Kastner</b> <span dir="ltr"><<a href="mailto:kaskastner@gmail.com">kaskastner@gmail.com</a>></span><br>Date: Wed, Sep 16, 2015 at 6:53 AM<br>Subject: Re: [Fot] FW: TR6 Cannon Intake Manifold<br>To: Van Mulders Marcel <<a href="mailto:van.mulders.marcel@telenet.be">van.mulders.marcel@telenet.be</a>><br><br><br><div dir="ltr"><div>The camshaft is the thing that has to determine the spring pressure, but to me, it seems way way way too light. My TR-3-4 engines with my G-3 camshaft had 135 pounds on the seat and about 320 open pressure. I realize this will sound out of bounds for you but rev range and how much RPM you intend to use will be a factor.</div><div><br></div><div>Do not let them talk you out of the 45mm carbs and I used 40mm chokes in both the TR-6 engine and even the GT-6 engine even ran on the dyno with NO VERNTRI and made more power but limited the low rpm smoothness so I never raced it that way... the factory <strong>1147cc</strong> <strong>Spitfire</strong> engines for Le Mans and Sebring had 45 mm Webers and made 3% more power.</div></div><div class="gmail_extra"><br clear="all"><div><div><p><strong><font color="#000099">Never be beaten by equipment.</font></strong></p></div></div> <br><div class="gmail_quote">On Wed, Sep 16, 2015 at 1:18 AM, Van Mulders Marcel <span dir="ltr"><<a href="mailto:van.mulders.marcel@telenet.be" target="_blank">van.mulders.marcel@telenet.be</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid"><u></u> <div> <div align="left" dir="ltr"><font color="#0000ff" face="Arial" size="2"><span>Thanks to the Fot members for their reactions : most are warnings that triple 45 Webers may be too big on a TR6 engine. But it is a race engine (2720cc) and the owner has already bought 3 good secondhand 45 Webers with identical progression holes : 36mm main venturi's seem to be a reasonable starting point in this case? </span></font><font color="#0000ff" face="Arial" size="2"><span>If necessary, he can go down to 34mm in 45 Webers.</span></font></div> <div align="left" dir="ltr"><font color="#0000ff" face="Arial" size="2"><span> I've seen TR6 racecars with 45 Webers and I wonder if the Cannon manifold, with 40mm diameter bores on the carburetor side, can be reamed to 45mm? </span></font></div> <div align="left" dir="ltr"><font color="#0000ff" face="Arial" size="2"><span>Another question : the valve seat pressure on my TR4A racecar is 35 kgs/77 lbs. I've also a cylinderhead with only 25 kgs/55lbs seat pressure. The springs on both cylinderheads are 5.25kg/mm (290lbs/").</span></font></div> <div align="left" dir="ltr"><font color="#0000ff" face="Arial" size="2"><span>Do you think 25kgs seat pressure is enough?</span></font></div> <div align="left" dir="ltr"><font color="#0000ff" face="Arial" size="2"><span>Marcel</span></font></div> <div align="left" dir="ltr"><font color="#0000ff" face="Arial" size="2"><span></span></font> </div><br> <div align="left" lang="nl" dir="ltr"> <hr> <font face="Tahoma" size="2"><b>Van:</b> Van Mulders Marcel [mailto:<a href="mailto:van.mulders.marcel@telenet.be" target="_blank">van.mulders.marcel@telenet.be</a>] <br><b>Verzonden:</b> woensdag 9 september 2015 17:32<br><b>Aan:</b> '<a href="mailto:fot@autox.team.net" target="_blank">fot@autox.team.net</a>'<br><b>Onderwerp:</b> TR6 Cannon Intake Manifold<br></font><br></div> <div></div> <div><font face="Arial" size="2"><span>I have to install triple Webers DCOE 45 on a TR6 engine. The owner has also provided a Cannon one piece intake manifold with balance pipes. The bore of the runners is 40mm on the carburettor side and 31.5mm on the cylinderhead side.</span></font></div> <div><font face="Arial" size="2"><span>Can these runners be reamed to 45mm/34mm? If not, are there other inlet manifolds available?</span></font></div><span><font color="#888888"> <div><font face="Arial" size="2"><span>Marcel.</span></font></div></font></span></div> <br>_______________________________________________<br> <a href="mailto:fot@autox.team.net" target="_blank">fot@autox.team.net</a><br> <br> <a href="http://www.fot-racing.com" target="_blank" rel="noreferrer">http://www.fot-racing.com</a><br> <br> Donate: <a href="http://www.team.net/donate.html" target="_blank" rel="noreferrer">http://www.team.net/donate.html</a><br> Archive: <a href="http://www.team.net/archive" target="_blank" rel="noreferrer">http://www.team.net/archive</a><br> Forums: <a href="http://www.team.net/forums" target="_blank" rel="noreferrer">http://www.team.net/forums</a><br> Unsubscribe/Manage: <a href="http://autox.team.net/mailman/options/fot/kaskastner@gmail.com" target="_blank" rel="noreferrer">http://autox.team.net/mailman/options/fot/kaskastner@gmail.com</a><br> <br> <br> <br></blockquote></div><br></div> </div><br></div> _______________________________________________<br><a href="mailto:fot@autox.team.net">fot@autox.team.net</a><br><br>http://www.fot-racing.com<br><br>Donate: http://www.team.net/donate.html<br>Archive: http://www.team.net/archive<br>Forums: http://www.team.net/forums<br>Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/awashatko@wi.rr.com<br><br><br></blockquote></div><br><div> <span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div>Allen Washatko</div><div>#6 Triumph TR6</div><div><br></div></div><br></div></span><br class="Apple-interchange-newline"> </div><br></body></html>