-6an feed limits on E85
-6an feed limits on E85 So on my current set up I’m running a -6an feed and return. Dual walbro 450s and haven’t decided on SEP 1500s or Bosch 210 injectors yet for my turbo 6.0 . Was wondering what the limits are on a -6an feed line on e85.
TECH Regular
Joined: Dec 2020
Posts: 423
Likes: 131
From: Ohio
https://lmengines.com/pages/fuel-line-calculator
This calculator also suggest your fluid velocity may be turbulent with -6 lines which is a big nono
for 15 ft lines
9 psi pressure drop on -6 lines
2 psi pressure drop on -8 lines
.7 psi pressure drop on -10 lines
Seems like the walbro 450's become very inefficient at around 80 psi
If you ran 20 psi boost, with 60 psi base pressure and 20 psi pressure drop (from lines and fittings number pulled out my ***) you'd be in trouble.
I'm not a tuner and I'm not an expert
This calculator also suggest your fluid velocity may be turbulent with -6 lines which is a big nono
for 15 ft lines
9 psi pressure drop on -6 lines
2 psi pressure drop on -8 lines
.7 psi pressure drop on -10 lines
Seems like the walbro 450's become very inefficient at around 80 psi
If you ran 20 psi boost, with 60 psi base pressure and 20 psi pressure drop (from lines and fittings number pulled out my ***) you'd be in trouble.
I'm not a tuner and I'm not an expert
https://lmengines.com/pages/fuel-line-calculator
This calculator also suggest your fluid velocity may be turbulent with -6 lines which is a big nono
for 15 ft lines
9 psi pressure drop on -6 lines
2 psi pressure drop on -8 lines
.7 psi pressure drop on -10 lines
Seems like the walbro 450's become very inefficient at around 80 psi
If you ran 20 psi boost, with 60 psi base pressure and 20 psi pressure drop (from lines and fittings number pulled out my ***) you'd be in trouble.
I'm not a tuner and I'm not an expert
This calculator also suggest your fluid velocity may be turbulent with -6 lines which is a big nono
for 15 ft lines
9 psi pressure drop on -6 lines
2 psi pressure drop on -8 lines
.7 psi pressure drop on -10 lines
Seems like the walbro 450's become very inefficient at around 80 psi
If you ran 20 psi boost, with 60 psi base pressure and 20 psi pressure drop (from lines and fittings number pulled out my ***) you'd be in trouble.
I'm not a tuner and I'm not an expert
TECH Regular
Joined: Dec 2020
Posts: 423
Likes: 131
From: Ohio
When I put the flow rate into the calculator I put 900 lb hr for 2 450's which wouldn't be accurate. At any normal base pressure (for efi) the flow would be less on those pumps. My bad.
They most likely have inefficient systems that's it. They just accept their pumps have to work extra hard and they may wind up with their base pressures dropping through a pull.
Just because the pumps are inefficient and there is a bunch of drag doesn't mean it won't work. It's just not ideal.
Like I said before I have a very analytical background. I'm not a tuner haha. Hopefully someone with more experience will chime in
They most likely have inefficient systems that's it. They just accept their pumps have to work extra hard and they may wind up with their base pressures dropping through a pull.
Just because the pumps are inefficient and there is a bunch of drag doesn't mean it won't work. It's just not ideal.
Like I said before I have a very analytical background. I'm not a tuner haha. Hopefully someone with more experience will chime in
When I put the flow rate into the calculator I put 900 lb hr for 2 450's which wouldn't be accurate. At any normal base pressure (for efi) the flow would be less on those pumps. My bad.
They most likely have inefficient systems that's it. They just accept their pumps have to work extra hard and they may wind up with their base pressures dropping through a pull.
Just because the pumps are inefficient and there is a bunch of drag doesn't mean it won't work. It's just not ideal.
Like I said before I have a very analytical background. I'm not a tuner haha. Hopefully someone with more experience will chime in
They most likely have inefficient systems that's it. They just accept their pumps have to work extra hard and they may wind up with their base pressures dropping through a pull.
Just because the pumps are inefficient and there is a bunch of drag doesn't mean it won't work. It's just not ideal.
Like I said before I have a very analytical background. I'm not a tuner haha. Hopefully someone with more experience will chime in
