Yellow Bullet Forums banner
1 - 20 of 24 Posts

· Beyond old
Joined
·
5,867 Posts
Take a look at the volt/pressure/flow chart for the pump you are running.
It's not the regulator that will reduce flow when raising the pressure, it's the pump.
 
  • Like
Reactions: 64nailhead

· Registered
Joined
·
2,329 Posts
I read somewhere that running at pressures as high as 100 psi can actually decrease volume. True or bogus?
Sorry my typing when I first posted was poor
Pressure is made from volume supply. If pump cant keep up volume then pressure wont be maintained. Its common with electric pumps. Mechanical not so much
 

· Registered
Joined
·
162 Posts
Injectors will flow more and more as pressure increases, as long as they open and close reliably. Some injectors have issues past 130psi. I have ran my car in the 120psi range as I had wired and selected fuel pumps that would do the job at that pressure. Most pumps don't do well in that region, injectors are fine tho, but I have not found a need to go any higher. 65psi base and 53psi boost was right at 117~118psi. DW400 pumps for anyone wondering was running two, now I have 3 but only because I was looking for a couple hundred more whp.
 

· Registered
Joined
·
9,394 Posts
Injectors will flow more and more as pressure increases, as long as they open and close reliably. Some injectors have issues past 130psi. I have ran my car in the 120psi range as I had wired and selected fuel pumps that would do the job at that pressure. Most pumps don't do well in that region, injectors are fine tho, but I have not found a need to go any higher. 65psi base and 53psi boost was right at 117~118psi. DW400 pumps for anyone wondering was running two, now I have 3 but only because I was looking for a couple hundred more whp.
when they begin to not open snd close reliably, in which state do they generally fail? Open or closed?
 

· Registered
Joined
·
1,391 Posts
Discussion Starter · #18 ·
8 210s on e85?
Bosch 210s are flow rated at 43.5. I have read they can be ran to 150 pounds net in short runs like drag racing.
@43.5 = 1500ish
@58 = 1750ish
 

· Registered
Joined
·
162 Posts
when they begin to not open snd close reliably, in which state do they generally fail? Open or closed?
I'm pretty sure it was rpm dependent as well. I can't remember who did the testing, I think it was Shane T. A lot of RPM and a lot of pressure and they started doing something weird. I think they were having a hard time opening at the same rate and thus the curve changed a bit. Could have been 150 psi, I'm not sure sorry. I don't think they failed or got sutck one way or another, i don't want to mislead. I'd run them higher than I have if I had to and just keep an eye on it till I was comfortable.
 
1 - 20 of 24 Posts
Top