78kingcab Posted September 25, 2009 Report Share Posted September 25, 2009 i have duel su's and a electric fuel pump, need to know what psi to set fuel pressure regulator.......... ive read around in here and get 3-5, and 5-7..... i know stupid question....... Quote Link to comment
izzo Posted September 25, 2009 Report Share Posted September 25, 2009 oh, dual su's You want at least 150psi, each. :D Quote Link to comment
Skib Posted September 25, 2009 Report Share Posted September 25, 2009 pick a medium and go with 5 psi :D Quote Link to comment
banzai510(hainz) Posted September 25, 2009 Report Share Posted September 25, 2009 3 to 3.5 should be good enough.thats what a stock mechanical is Quote Link to comment
MAG58 Posted September 26, 2009 Report Share Posted September 26, 2009 Agreed. Go over 5 and your float bowl will not seal properly. That's the problem I had. 3 is fine, really as long as it flows enough to keep the floats full and doesn't force the needle back open you're good to go. Quote Link to comment
ggzilla Posted September 26, 2009 Report Share Posted September 26, 2009 Datsun twin Hitachis are max 3 psi. So maybe the SUs are similar. Webers and Mikuni also want 3 psi Quote Link to comment
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