<html><head></head><body><div class="ydp6634d044yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div></div>
<div dir="ltr" data-setdir="false">Mikey I suggested you needed to move electric pump so it is low and near the tank. Remember when I told you electric pumps will push fuel around the block but there is no vacuum side to pull from the tank.</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">I also reminded you that only steel fuel lines in the engine bay because an errarnt fan belt can rip the rubber line from a fitting and the resulting engine fire wil not be pretty. Having ethanol resistant rubber hoses is still rubber hose. I doubt that any Corvair there yesterday had rubber fuel lines in the engine bay.</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">Steve</div><div><br></div>
</div><div id="ydp51a6a42fyahoo_quoted_0963549900" class="ydp51a6a42fyahoo_quoted">
<div style="font-family:'Helvetica Neue', Helvetica, Arial, sans-serif;font-size:13px;color:#26282a;">
<div>
On Monday, August 15, 2022 at 03:32:15 PM MDT, Mikey Spaulding via RMC-List <rmc-list@corvair.org> wrote:
</div>
<div><br></div>
<div><br></div>
<div><div id="ydp51a6a42fyiv0269494432"><div><div dir="ltr">Amazing information here!<br clear="none"><br clear="none"><div>So what I'm hearing as far as action items would be:<br clear="none">-adjust ignition timing<br clear="none">-larger jets in the carbs</div><div>-ensure all rubber fuel hoses are ethanol compliant (replace if not)</div><div><br clear="none"></div><div>Forgive me if I missed anything. Are all of these jobs that can be accomplished by a layman in the garage, or would they require special attention from more professional hands?<br clear="none"><br clear="none">Thanks again,<br clear="none">Mikey</div></div><br clear="none"><div id="ydp51a6a42fyiv0269494432yqt68628" class="ydp51a6a42fyiv0269494432yqt6117072824"><div class="ydp51a6a42fyiv0269494432gmail_quote"><div dir="ltr" class="ydp51a6a42fyiv0269494432gmail_attr">On Mon, Aug 15, 2022 at 12:53 PM Kenneth Schifftner <<a shape="rect" href="mailto:scrubbr@ix.netcom.com" rel="nofollow" target="_blank">scrubbr@ix.netcom.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="ydp51a6a42fyiv0269494432gmail_quote"><div>Mike:<div><br clear="none"></div><div>What I was told about carburetors and air/fuel ratios is that an IC engine depends upon both the VOLUME of air being passed through the engine and the MASS (weight of air). It is the kinetic energy of the air passing through the jet that primarily creates the needed atomization, not just the volumetric (air) flow.The kinetic energy is the gas (air) velocity times the mass of the air. Thus, as the altitude increases and the air density decreases, kinetic energy required for fuel atomization decreases. Compensation is needed.</div><div><br clear="none"></div><div>But there is more. What about the fuel? The fuel needs to pass through the orifice in the jet. The jet (orifice) in a carburetor resists the flow of the fuel thus a slightly larger jet reduces the fuel flow resistance. Therefore, the bigger jet adjusts for the altitude's reduced kinetic energy as dictated by the lighter, lower density air. Less air kinetic energy is compensated by lowering the fuel flow resistance imparted to the fuel by the jet.</div><div><br clear="none"></div><div>Modern FI systems have MASS FLOW sensors for this reason. The atmospheric pressure sensor determines the altitude variable and the ambient temperature sensor provides the temperature variable, the computer determines the available atomization kinetic energy. The signal then is used to set the air/fuel mixture under various throttle position (and exhaust oxygen) settings.</div><div><br clear="none"></div><div>Hope that helps!</div><div><br clear="none"></div><div>Ken Scifttner<br clear="none"><div><br clear="none"><blockquote type="cite"><div>On Aug 15, 2022, at 12:13 PM, MICHAEL PIPER via RMC-List <<a shape="rect" href="mailto:rmc-list@corvair.org" rel="nofollow" target="_blank">rmc-list@corvair.org</a>> wrote:</div><br clear="none"><div>
<div>
<div>
<span style="font-family:helvetica;font-size:12pt;">My $0.02-</span>
<br clear="none">
</div>
<div>
<span style="font-family:helvetica;font-size:12pt;"><br clear="none"></span>
</div>
<div>
<span style="font-family:helvetica;font-size:12pt;">The high alcohol fuel will boil if you look at it cross-eyed. It also has more oxygen on it so to compensate you can make the fuel/air mix richer to cut down on detonation. I have two 140 engines and they tend to detonate easily. I don't know what jets I have but they are bigger than stock.</span>
</div>
<div>
<span style="font-family:helvetica;font-size:12pt;"><br clear="none"></span>
</div>
<div>
<span style="font-family:helvetica;font-size:12pt;">In the mists of time, using leaded fuel, the old rule was to advance the timing 1/2 degree per 1000 feet of elevation, or 2 1/2 degrees at 5000 feet. That did not work well in my 140 engines. I've had detonation issues so I'm pretty close to the book timing advance.</span>
</div>
<div>
<span style="font-family:helvetica;font-size:12pt;"><br clear="none"></span>
</div>
<div>
<span style="font-family:helvetica;font-size:12pt;">Be very careful when putting rubber hoses in the engine bay. If you loose a belt and cut a line, you have the makings of a fire if the pump keeps running.</span>
</div>
<div>
<span style="font-family:helvetica;font-size:12pt;"><br clear="none"></span>
</div>
<div>
<span style="font-family:helvetica;font-size:12pt;">I've put electric fuel pumps in the front near the right front wheel or back by the left rear wheel. If the pump is low in the system it does not need to suck fuel to speak of. If it is the engine bay where Mikey's is it will need to lift fuel to the carbs. If it's hot due to the engine plus you are sucking on the fuel, that could enhance vapor lock chances due to reduced atmospheric pressure.</span>
</div>
<div>
<span style="font-family:helvetica;font-size:12pt;"><br clear="none"></span>
</div>
<div>
<span style="font-family:helvetica;font-size:12pt;">Regards,</span>
</div>
<div>
<span style="font-family:helvetica;font-size:12pt;"><br clear="none"></span>
</div>
<div>
<span style="font-family:helvetica;font-size:12pt;">Mike </span>
</div>
<blockquote type="cite">
<div>
On 08/15/2022 11:34 AM Paul Jarrett Sr <<a shape="rect" href="mailto:pjarrettsr@yahoo.com" rel="nofollow" target="_blank">pjarrettsr@yahoo.com</a>> wrote:
</div>
<div>
<br clear="none">
</div>
<div>
<br clear="none">
</div>
<div style="font-family:new times, serif;font-size:16px;">
<div>
<br clear="none">
</div>
<div dir="ltr">
Why would you increase jet size at higher altitude?
</div>
<div>
<br clear="none">
</div>
</div>
<div id="ydp51a6a42fyiv0269494432gmail-m_-669642756297182550ydp22034215yahoo_quoted_1176047535">
<div style="font-family:Helvetica, Arial, sans-serif;font-size:13px;color:rgb(38,40,42);">
<div>
On Monday, August 15, 2022 at 11:18:34 AM MDT, JOHN DAWSON via RMC-List <<a shape="rect" href="mailto:rmc-list@corvair.org" rel="nofollow" target="_blank">rmc-list@corvair.org</a>> wrote:
</div>
<div>
<br clear="none">
</div>
<div>
<br clear="none">
</div>
<div>
<div id="ydp51a6a42fyiv0269494432gmail-m_-669642756297182550ydp22034215yiv7711077945">
<div>
<div style="font-size:12pt;font-family:helvetica, arial, sans-serif;color:rgb(51,51,51);">
<span style="font-family:helvetica;font-size:12pt;">Mikey:</span>
<br clear="none">
</div>
<div style="font-size:12pt;font-family:helvetica, arial, sans-serif;color:rgb(51,51,51);">
<span style="font-family:helvetica;font-size:12pt;">all of the issues you mention could contribute to the surging, but it was a hot day and having the electric fuel pump inside the engine compartment could be a major contributing factor. </span>
</div>
<div style="font-size:12pt;font-family:helvetica, arial, sans-serif;color:rgb(51,51,51);">
<span style="font-family:helvetica;font-size:12pt;"><br clear="none"></span>
</div>
<div style="font-size:12pt;font-family:helvetica, arial, sans-serif;color:rgb(51,51,51);">
<span style="font-family:helvetica;font-size:12pt;">Sounds like a vapor lock or a heat-related fuel issue, as what happened to me just two miles from home and my electric fuel pump is located up front near the tank; but is subject to all the heat radiating up from the hot asphalt pavement. The 10% ethanol in the fuels we have in the metro area does not help one bit either.</span>
</div>
<div style="font-size:12pt;font-family:helvetica, arial, sans-serif;color:rgb(51,51,51);">
<span style="font-family:helvetica;font-size:12pt;"><br clear="none"></span>
</div>
<div style="font-size:12pt;font-family:helvetica, arial, sans-serif;color:rgb(51,51,51);">
<span style="font-family:helvetica;font-size:12pt;">Most important in setting the car up for 5280' elevation is to advance the ignition timing by about 3 - 5 degrees and maybe having larger jets in the carbs (go from 49 to 51). I've been able to get by with just advancing the ignition. And always spend the extra money on the 91 octane "Premium" fuel...even if it has ethanol in it.</span>
</div>
<div style="font-size:12pt;font-family:helvetica, arial, sans-serif;color:rgb(51,51,51);">
<span style="font-family:helvetica;font-size:12pt;"><br clear="none"></span>
</div>
<div style="font-size:12pt;font-family:helvetica, arial, sans-serif;color:rgb(51,51,51);">
<span style="font-family:helvetica;font-size:12pt;">Make sure that you've replaced all the rubber fuel hoses with an ethanol-compliant hose (Gates 4219BG for instance) This is available at most auto parts stores (I've purchased it from O'Reilly's recently)</span>
</div>
<div style="font-size:12pt;font-family:helvetica, arial, sans-serif;color:rgb(51,51,51);">
<span style="font-family:helvetica;font-size:12pt;"><br clear="none"></span>
</div>
<div style="font-size:12pt;font-family:helvetica, arial, sans-serif;color:rgb(51,51,51);">
<span style="font-family:helvetica;font-size:12pt;">The PowerGlide in of itself is probably not the main culprit other than it's just a two-speed transmission, and therefore does not allow for keeping the engine rpm up a bit when going uphill (unless it's in "L" and then the rpms may be a bit too high...)</span>
</div>
<div style="font-size:12pt;font-family:helvetica, arial, sans-serif;color:rgb(51,51,51);">
<span style="font-family:helvetica;font-size:12pt;"><br clear="none"></span>
</div>
<div style="font-size:12pt;font-family:helvetica, arial, sans-serif;color:rgb(51,51,51);">
<span style="font-family:helvetica;font-size:12pt;">Hope this helps</span>
</div>
<div style="font-size:12pt;font-family:helvetica, arial, sans-serif;color:rgb(51,51,51);">
<span style="font-family:helvetica;font-size:12pt;"><br clear="none"></span>
</div>
<div style="font-size:12pt;font-family:helvetica, arial, sans-serif;color:rgb(51,51,51);">
<span style="font-family:helvetica;font-size:12pt;">Be safe out there</span>
</div>
<div style="font-size:12pt;font-family:helvetica, arial, sans-serif;color:rgb(51,51,51);">
<span style="font-family:helvetica;font-size:12pt;">John Dawson</span>
</div>
<blockquote type="cite">
<div id="ydp51a6a42fyiv0269494432gmail-m_-669642756297182550ydp22034215yiv7711077945yqt38165">
<div>
On 08/15/2022 10:46 AM Mikey Spaulding <<a shape="rect" href="mailto:mspaulding166@gmail.com" rel="nofollow" target="_blank">mspaulding166@gmail.com</a>> wrote:
</div>
<div>
<br clear="none">
</div>
<div>
<br clear="none">
</div>
<div dir="ltr">
Interestingly, twice on my drive home while heading uphill, I had a sort of surging in the vehicle and seeming loss of power, almost like it was stalling out. The last time it happened on Federal, I slowed down to about 30mph (not intentionally) before making it to the top of the hill. Once past the crest, I had no more problems. Any ideas as to what gremlin could cause this? Would it be related to not having the carbs tuned to this elevation since bringing it from Minnesota, where my elevation was 912' asl? Or is this more a transmission issue with the PowerGlide?
<br clear="none">
<br clear="none">Thanks for any help and ideas!
<br clear="none">
<br clear="none">Mikey
</div>
<br clear="none">
<div>
<div dir="ltr">
On Sun, Aug 14, 2022 at 9:08 PM MICHAEL PIPER via RMC-List <<a shape="rect" href="mailto:rmc-list@corvair.org" rel="nofollow" target="_blank">rmc-list@corvair.org</a>> wrote:
<br clear="none">
</div>
<blockquote>
<u></u>
<div>
<div>
<span style="font-family:helvetica;font-size:12pt;">My red Corsa has an Airtex solenoid style pump, the white car has a Carter vane style pump. Both are low pressure pumps. I think the problem with the red Corsa is the wiring in the engine bay vs the pump. I wiggle the wires by the bulkhead connector and off it goes. The problem has been very hard to duplicate sitting in the garage.</span>
<br clear="none">
</div>
<div>
<span style="font-family:helvetica;font-size:12pt;"><br clear="none"></span>
</div>
<div>
<span id="ydp51a6a42fyiv0269494432gmail-m_-669642756297182550ydp22034215yiv7711077945gmail-m_-3103956812098902523_mce_caret"><span style="font-family:helvetica;font-size:12pt;">Maybe I failed to pay my dues to the gremlin union.</span></span>
</div>
<div>
<span style="font-family:helvetica;font-size:12pt;"><br clear="none"></span>
</div>
<div>
<span style="font-family:helvetica;font-size:12pt;">Hope this is a little helpful.</span>
</div>
<div>
<span style="font-family:helvetica;font-size:12pt;"><br clear="none"></span>
</div>
<div>
<span style="font-family:helvetica;font-size:12pt;">Mike</span>
</div>
<blockquote type="cite">
<div>
On 08/14/2022 8:54 PM JOHN DAWSON via RMC-List <<a shape="rect" href="mailto:rmc-list@corvair.org" rel="nofollow" target="_blank">rmc-list@corvair.org</a>> wrote:
</div>
<div>
<br clear="none">
</div>
<div>
<br clear="none">
</div>
<div style="font-size:12pt;font-family:helvetica, arial, sans-serif;color:rgb(51,51,51);">
<span style="font-family:helvetica;font-size:12pt;">That darn gremlin may have been passed over from Mike's car to my sedan...</span>
</div>
<div style="font-size:12pt;font-family:helvetica, arial, sans-serif;color:rgb(51,51,51);">
<span style="font-family:helvetica;font-size:12pt;">the electric fuel pump decided to take a coffee break as I was waiting at the light at Orchard and Broadway on the way home. was able to get the car to a safe place and 30 minutes later, the pump was back to work...and of course that was after calling AAA for a tow and letting Karen know that I'd be a little late getting home.</span>
</div>
<div style="font-size:12pt;font-family:helvetica, arial, sans-serif;color:rgb(51,51,51);">
<span style="font-family:helvetica;font-size:12pt;"><br clear="none"></span>
</div>
<div style="font-size:12pt;font-family:helvetica, arial, sans-serif;color:rgb(51,51,51);">
<span style="font-family:helvetica;font-size:12pt;">BTW: what type of electric pump have you used on your daily drivers?</span>
</div>
<div style="font-size:12pt;font-family:helvetica, arial, sans-serif;color:rgb(51,51,51);">
<span style="font-family:helvetica;font-size:12pt;"><br clear="none"></span>
</div>
<div style="font-size:12pt;font-family:helvetica, arial, sans-serif;color:rgb(51,51,51);">
<span style="font-family:helvetica;font-size:12pt;">Great to see you and Linea today.</span>
</div>
<div style="font-size:12pt;font-family:helvetica, arial, sans-serif;color:rgb(51,51,51);">
<span style="font-family:helvetica;font-size:12pt;"><br clear="none"></span>
</div>
<div style="font-size:12pt;font-family:helvetica, arial, sans-serif;color:rgb(51,51,51);">
<span style="font-family:helvetica;font-size:12pt;">Be safe out there</span>
</div>
<div style="font-size:12pt;font-family:helvetica, arial, sans-serif;color:rgb(51,51,51);">
<span style="font-family:helvetica;font-size:12pt;">JD</span>
</div>
<blockquote type="cite">
<div>
On 08/14/2022 5:04 PM Eric Schakel via RMC-List <<a shape="rect" href="mailto:rmc-list@corvair.org" rel="nofollow" target="_blank">rmc-list@corvair.org</a>> wrote:
</div>
<div>
<br clear="none">
</div>
<div>
<br clear="none">
</div>
<div><p><span style="color:windowtext;">Good time, good people, enjoyed the cars and company. Special thanks to Mike Piper, who once again did “Corvair gremlin” duty so the rest could drive trouble-free! And thank you, Dale, for getting this up so quickly!</span></p><div><span style="color:windowtext;"> </span><br clear="none"></div><p><span style="color:windowtext;">Eric S.</span></p><div><span style="color:windowtext;"> </span><br clear="none"></div><div><span style="color:windowtext;"> </span><br clear="none"></div>
<div>
<div style="border-right:none;border-bottom:none;border-left:none;border-top:1pt solid rgb(225,225,225);padding:3pt 0in 0in;"><p><strong><span style="color:windowtext;">From:</span></strong><span style="color:windowtext;"> RMC-List <<a shape="rect" href="mailto:rmc-list-bounces@corvair.org" rel="nofollow" target="_blank">rmc-list-bounces@corvair.org</a>> <strong>On Behalf Of </strong>Dale N. via RMC-List<br clear="none"><strong>Sent:</strong> Sunday, August 14, 2022 3:57 PM<br clear="none"><strong>To:</strong> Corvair - RMC Email List <<a shape="rect" href="mailto:rmc-list@corvair.org" rel="nofollow" target="_blank">rmc-list@corvair.org</a>><br clear="none"><strong>Subject:</strong> RMC List - Picnic</span></p>
</div>
</div><p><br clear="none"></p><p>Hello RMCrs,<br clear="none"><br clear="none">We got together for the Wilshire Memorial Picnic today.<br clear="none">As usual, it was a combination of pleasant weather, almost too much food, and not enough conversation.<br clear="none">Never seems to be enough time to catch up with everyone.<br clear="none"><br clear="none">If you were unable to attend, you missed a good time and we missed you.<br clear="none"><br clear="none">Check this link for a few photos from the gathering.<br clear="none"><br clear="none"><a shape="rect" href="https://www.rockymountaincorsa.org/2022-08-14-picnic/" rel="nofollow" target="_blank"><span>https://www.rockymountaincorsa.org/2022-08-14-picnic/</span></a><br clear="none"><br clear="none"><span>Dale</span></p>
</div>_______________________________________________
<br clear="none">This message was sent by the RMCs mailing list, all copyrights are the property of the writer, please attribute properly.
<br clear="none">This list sponsored by the Corvair Society of America, <a shape="rect" href="http://www.corvair.org/" rel="nofollow" target="_blank">http://www.corvair.org</a>
<br clear="none">
</blockquote>_______________________________________________
<br clear="none">This message was sent by the RMCs mailing list, all copyrights are the property of the writer, please attribute properly.
<br clear="none">This list sponsored by the Corvair Society of America, <a shape="rect" href="http://www.corvair.org/" rel="nofollow" target="_blank">http://www.corvair.org</a>
<br clear="none">
</blockquote>
</div>_______________________________________________
<br clear="none">This message was sent by the RMCs mailing list, all copyrights are the property of the writer, please attribute properly.
<br clear="none">This list sponsored by the Corvair Society of America, <a shape="rect" href="http://www.corvair.org/" rel="nofollow" target="_blank">http://www.corvair.org</a>
<br clear="none">
</blockquote>
</div>
</div>
</blockquote>
</div>
</div>
<div id="ydp51a6a42fyiv0269494432gmail-m_-669642756297182550ydp22034215yqt58256">
_______________________________________________
<br clear="none">This message was sent by the RMCs mailing list, all copyrights are the property of the writer, please attribute properly.
<br clear="none">This list sponsored by the Corvair Society of America, <a shape="rect" href="http://www.corvair.org/" rel="nofollow" target="_blank">http://www.corvair.org</a>
<br clear="none">
</div>
</div>
</div>
</div>
</blockquote>
</div>
_______________________________________________<br clear="none">This message was sent by the RMCs mailing list, all copyrights are the property of the writer, please attribute properly.<br clear="none">This list sponsored by the Corvair Society of America, <a shape="rect" href="http://www.corvair.org" rel="nofollow" target="_blank">http://www.corvair.org</a><br clear="none"></div></blockquote></div><br clear="none"></div></div></blockquote></div></div>
</div></div><div class="ydp51a6a42fyqt6117072824" id="ydp51a6a42fyqt43389">_______________________________________________<br clear="none">This message was sent by the RMCs mailing list, all copyrights are the property of the writer, please attribute properly.<br clear="none">This list sponsored by the Corvair Society of America, <a shape="rect" href="http://www.corvair.org" rel="nofollow" target="_blank">http://www.corvair.org</a><br clear="none"></div></div>
</div>
</div></body></html>