datsun75 Posted July 27, 2017 Share Posted July 27, 2017 RUNNING A 3.0 L28 MOTOR ON THE TRACK WAS WONDERING IF I NEED TO RUN BIGGIER LINES FROM TANK TO CARBS, OR CAN I JUST RUN FROM UP FRONT FUEL FILTER OUT BIGGER HOSE TO CARBS.....I THINK I HAVE TO HOLD 4PSI CONSTANT PRESSURE....WAT SIZE DO YOU COMMONLY RUN.....5/16-3/8-1/2 SIZES? Quote Link to comment Share on other sites More sharing options...
BrandenZ Posted July 27, 2017 Share Posted July 27, 2017 I used my 240z's factory 5/16 feed, 3/16 return all day long at countless autox and track events, at 5 psi to dual webers on a 10.2 comp 2.8L E88/F54 combo using a mechanical fuel pump. The only issues I ever had were vapor lock on the hottest days of summer, autox only. Swapping to an electric pump and re-routing the lines around the headers sorted it. Quote Link to comment Share on other sites More sharing options...
datsun75 Posted July 27, 2017 Author Share Posted July 27, 2017 (edited) THANKS MAN....GOOD TO KNOW AND ABOUT THE RETURN LINE....DO I NEED IT FOR TRIPLE KUNIS? Edited July 27, 2017 by datsun75 Quote Link to comment Share on other sites More sharing options...
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