<html 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=utf-8"><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;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
.MsoChpDefault
{mso-style-type:export-only;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 72.0pt 72.0pt 72.0pt;}
div.WordSection1
{page:WordSection1;}
--></style></head><body lang=EN-AU link=blue vlink="#954F72"><div class=WordSection1><p class=MsoNormal>....I’d be looking at the needle profiles. A Gunson Colortune is a great help as it allows you to see the combustion across the rev range. I found the correct needle for the HD6 on my Shorrock blower (MG TC) that way.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Cheers</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Peter</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 0cm 0cm 0cm'><p class=MsoNormal style='border:none;padding:0cm'><b>From: </b><a href="mailto:healeys@autox.team.net">Perry via Healeys</a><br><b>Sent: </b>Sunday, 11 August 2019 11:09 AM<br><b>To: </b><a href="mailto:eyera3000@gmail.com">i erbs</a>; <a href="mailto:airtightproductions@icloud.com">Steven Kingsbury</a><br><b>Cc: </b><a href="mailto:healeys@autox.team.net">Ahealey help</a><br><b>Subject: </b>Re: [Healeys] Four cylinder woes</p></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-US>Steven<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Our BN2 has “M” mods using a different cam grind then the factory M grind (Delta Cams) and 10:1 compression. The stock head compression chamber was cleaned up a bit and the ports slightly smoothed. I had to find the right carb needles to make the rev range smoother and to provide consistent performance. Took a bit of trail and error. Also had to play with the static timing but did not have to re curve the distributor. I run a few more degrees than stock but that has a lot to due with the cam grind. Suspect that if the spark plugs fire at 0 RPM to 2500 and from 3200 up, its probably not a plug or distributor problem. The variable is the control of fuel and the mentioned potential problem areas (needles, damper springs and oil in the pots) have a lot to due with controlling the mixture. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Perry<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Sent from <a href="https://go.microsoft.com/fwlink/?LinkId=550986">Mail</a> for Windows 10<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US>From: </span></b><span lang=EN-US><a href="mailto:eyera3000@gmail.com">i erbs</a><br><b>Sent: </b>Saturday, August 10, 2019 8:26 PM<br><b>To: </b><a href="mailto:airtightproductions@icloud.com">Steven Kingsbury</a><br><b>Cc: </b><a href="mailto:healeys@autox.team.net">Ahealey help</a><br><b>Subject: </b>Re: [Healeys] Four cylinder woes<o:p></o:p></span></p></div><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><div><p class=MsoNormal style='margin-bottom:12.0pt'><span lang=EN-US>Distributor advance or vaccum leak issues. <o:p></o:p></span></p><div><p class=MsoNormal><span lang=EN-US>Ira Erbs<br>Portland, OR<br>typos and artifacts are the fault of my phone<o:p></o:p></span></p></div></div><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><div><div><p class=MsoNormal><span lang=EN-US>On Sat, Aug 10, 2019, 2:04 PM Steven Kingsbury via Healeys <<a href="mailto:healeys@autox.team.net">healeys@autox.team.net</a>> wrote:<o:p></o:p></span></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5.0pt'><div><div><p class=MsoNormal style='margin-left:4.8pt'><span lang=EN-US>To start off, my car, an early BN1, #598 was burned up in the Paradise fire and I just bought another BN1 to replace it. The new car has been hot rodded up a bit. Cam, bigger carbs and different pistons so it has a way different compression ratio and has been in this configuration for over ten years I believe. Was told it runs like the wind and came from a reliable and trust worthy person. Well I'm having problems with the car. Up to 2500 RPM, it runs great! When I can get it up to 3200 RPM it runs great again, it's the 2500 to 3200 range where I'm having problems.<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:4.8pt'><span lang=EN-US> It feels like it's starving for fuel, or it has too much fuel, it hesitates, feels like it's not running on all cylinders, and generally like a bucking bronco, but then at 3200 or so, she smooths right out and flies!<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:4.8pt'><span lang=EN-US> I was told the carbs were set up a little rich. I leaned them out one flat at a time and no difference until they got too lean and wouldn't run well at all. So I took them back to original setting positions. <o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:4.8pt'><span lang=EN-US> I've checked all gaps, they're all right. Pulled plugs when getting home and they are all fine, a little brown and all even looking. New condenser, new coil, changed to new plugs, I have not checked the timing yet, but with the way it runs below 2500 and above 3000, it seems to be just fine.<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:4.8pt'><span lang=EN-US> I am getting the car up in the air Monday as I have new tires to replace the old ones and will do a static timing check at that time. My old four cylinder was a breeze to set up and ran smooth through all revs. What am I missing with an engine set up like an M? Why would things go south between 2500 and 3000 and run fine below and above?<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:4.8pt'><span lang=EN-US> All suggestions are welcome and I do have a new fuel pump on order, so fire away. I've been doing things one step at a time to not introduce new problems, but this is the only problem that is consistent.<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:4.8pt'><span lang=EN-US> Thanks,<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:4.8pt'><span lang=EN-US>Steven Kingsbury<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:4.8pt'><span lang=EN-US><o:p> </o:p></span></p></div></div></blockquote></div><p class=MsoNormal style='mso-margin-top-alt:0cm;margin-right:0cm;margin-bottom:12.0pt;margin-left:4.8pt'><span lang=EN-US>_______________________________________________<br>Support Team.Net <a href="http://www.team.net/donate.html" target="_blank">http://www.team.net/donate.html</a><br>Suggested annual donation $12.75<br><br>Archive: <a href="http://www.team.net/pipermail/healeys" target="_blank">http://www.team.net/pipermail/healeys</a> <a href="http://autox.team.net/archive" target="_blank">http://autox.team.net/archive</a><br><br><a href="mailto:Healeys@autox.team.net" target="_blank">Healeys@autox.team.net</a><br><a href="http://autox.team.net/mailman/listinfo/healeys" target="_blank">http://autox.team.net/mailman/listinfo/healeys</a><br><br>Unsubscribe/Manage: <a href="http://autox.team.net/mailman/options/healeys/eyera3000@gmail.com" target="_blank">http://autox.team.net/mailman/options/healeys/eyera3000@gmail.com</a><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>