Walbro AND Bosch 044..can they be run in parallel externally?
03-28-2012, 03:05 PM
#1
Walbro AND Bosch 044..can they be run in parallel externally? Im currently running a single Bosch 044 on my setup. It is a 6.0 with a PT7675. Im running out of fuel around 8-9psi. I have a new Walbro GSL392 laying around, could I run that in parallel with the 044 or would the non-matching fuel pressures merging into a single line into the regulator cause a problem? I think it would be ok but wondering if anyone has any ideas. Thanks
03-30-2012, 06:16 PM
#2
9 Second Club
Yes you can run them in parallel.
Pressure is determined by the regulator. All you are doing is adding extra flow. The only time it will pose an issue is if you ever run fuel pressures exceeding say 70psi. Walbros start to fall flat around that whereas the Bosch continues to flow well to over 100psi.
But all that will happen is total fuel flow will drop off. It would be nice to run both pumps the same, but it certainly is not essential.
Pressure is determined by the regulator. All you are doing is adding extra flow. The only time it will pose an issue is if you ever run fuel pressures exceeding say 70psi. Walbros start to fall flat around that whereas the Bosch continues to flow well to over 100psi.
But all that will happen is total fuel flow will drop off. It would be nice to run both pumps the same, but it certainly is not essential.
