fuel pump pressure question

micah Learner Dubber

16 posts · joined Nov 2006 · 29 Sep 2007, 12:24 pm

#614240

i am putting a ej20tt into a 72 super beetle and i want to know what fuel pressure those subaru engines need to run them and also if i run a fuel pump with too much pressure fuel regulator take care of that
thanks
micah sauter
micahsauter@gmail.com

subaruboxer Officially Full-On Dubber

292 posts · joined Jan 2005 · 29 Sep 2007, 7:15 pm

#614275

Hi micah,

the fuel pump got to make 2.5 bar of pressure. It would be best to use a 2.5 bar pump. If you use a stronger pump your fuel lines have to be upgraded to the higher pressure!

Rota_Motor

Former member · 30 Sep 2007, 11:27 am

#614312

most EFI and turbo conversions I have seen use an external high pressure Bosch fuel pump, all EFI engines I'm aware of use similar pressures, and for a VW you'll probably need to run at least a 5/16" supply line, and a similar sized return line to the tank.

I think you'll have no problems with too much pressure, unless the return line is too small and restricted that the regulator cant do its job properly.