<div dir="ltr"><div>Not sure if this information will help, but I had some Sprite racer friends that were anal about having everything look good. So they aligned/oriented the float chamber tops about 90 degrees away from the factory orientation because they thought it looked better. As I recall, this realignment put the float arms in line with the cars front to back orientation. This made the floats and float arms react by pivoting in response to hard braking and/or acceleration and either causing fuel starvation or flooding. I don't recall which. My point being that apparently float arm orientation can cause some issues.</div><div><br></div><div> </div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Jun 14, 2020 at 10:46 AM Michael Oritt <<a href="mailto:michael.oritt@gmail.com">michael.oritt@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div class="gmail_default" style="color:rgb(51,51,255)">Gary--</div><div class="gmail_default" style="color:rgb(51,51,255)"><br></div><div class="gmail_default" style="color:rgb(51,51,255)">2 to 4 psi is the common wisdom. </div><div class="gmail_default" style="color:rgb(51,51,255)"><br></div><div class="gmail_default" style="color:rgb(51,51,255)">That said, I had a set of HS6's on the MGA engine in my (now-gone) Elva Courier and no amount of fiddling with floats, lid position, etc. would solve a consistent fuel starvation problem when coming of hard, tight right-handers under full throttle as in turns 1 at VIR, Summit Point, etc. I finally solved the problem by installing a Holly Blue (high-pressure fuel pump) and reducing pressure via a regulator to about 5.5-6 psi. Dire predictions notwithstanding I never had an issue with the floats' being overcome by that pressure and causing leaking. </div><div class="gmail_default" style="color:rgb(51,51,255)"><br></div><div class="gmail_default" style="color:rgb(51,51,255)">I'm not saying anyone should go to such extremes without a good reason but I think the "common wisdom" is just that and not always gospel. </div><div class="gmail_default" style="color:rgb(51,51,255)"><br></div><div class="gmail_default" style="color:rgb(51,51,255)">Best--Michael Oritt</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Jun 14, 2020 at 12:27 PM warthodson--- via Healeys <<a href="mailto:healeys@autox.team.net" target="_blank">healeys@autox.team.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div style="color:black;font:12pt "Comic Sans MS",sans-serif">What is the Max recommended fuel pressure (psi) for SU HS 6 Carbs. Is there also a Min fuel pressure?
<div>Gary Hodson</div>
</div>
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