Walbro 450 or Walbro 450 High Pressure?
#1
Walbro 450 or Walbro 450 High Pressure?
I'm not sure which one would be beneficial for a E85 setup with Grams 1000cc injectors. Around 500whp goal
Normal https://walbrofuelpumps.com/450lph-w...0267.html.html
High pressure https://walbrofuelpumps.com/walbro-4...tive.html.html
What is the benefit of going with the high pressure? I read the differences but I cannot put that information into anything I can understand.
Normal https://walbrofuelpumps.com/450lph-w...0267.html.html
High pressure https://walbrofuelpumps.com/walbro-4...tive.html.html
What is the benefit of going with the high pressure? I read the differences but I cannot put that information into anything I can understand.
#2
Honda-Tech Member
iTrader: (1)
Re: Walbro 450 or Walbro 450 High Pressure?
How much boost are you planning to run to reach your goal, and what base fuel pressure? The regular one (which I am using, btw) is only rated to 87 psi fuel pressure before the flow starts to drastically drop off - look at the graph on the link you posted. If you're running 4 bar (58 psi) fuel pressure, you can run 29 psi of boost before you start getting into dangerous territory with the regular pump (58+29 = 87).
#4
Honda-Tech Member
Re: Walbro 450 or Walbro 450 High Pressure?
My guess would be the high pressure version would be for returnless fuel systems that don’t use a map referenced fuel pressure regulator.
or like Dax said high base pressure combined with high boost pressure
or like Dax said high base pressure combined with high boost pressure
#5
Honda-Tech Member
Re: Walbro 450 or Walbro 450 High Pressure?
How much boost are you planning to run to reach your goal, and what base fuel pressure? The regular one (which I am using, btw) is only rated to 87 psi fuel pressure before the flow starts to drastically drop off - look at the graph on the link you posted. If you're running 4 bar (58 psi) fuel pressure, you can run 29 psi of boost before you start getting into dangerous territory with the regular pump (58+29 = 87).
#7
Honda-Tech Member
Re: Walbro 450 or Walbro 450 High Pressure?
You might get close to maxing out your 1000cc injectors for 500whp though. If you haven’t purchased them yet, you might want to go bigger, like 1200cc or larger.
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