Random question - just got to thinking about this last night.

All other things being equal (injectors, fuel rail, no FPR), will adding a larger fuel pump change the amount of fuel available to the injectors? For instance, if your injectors are running at say, 90% duty cycle, will slapping on a larger fuel pump alone make a change for the better?


Pat, who is pondering today

 

heres "food for thought" pat......

my old turbo civic......static line pressure was 50psi. Added a 255 mustang 5.0 pump to the mix (replaced in tank)fuel pressure went to 90psi with no adjustment.

you do the math

 

Mmmm...food.

Damn I'm hungry.

Jason-
who's going to lunch early today

 

Vader - pwhore!! (+1)

Tran - Did that require any regulation, or were you fine without? Just thinking about a future application, and making sure I still have juice at 1 bar


Pat, who's blowing off work this afternoon to play golf

 

That's because the higher flow rate has apparently overwhelmed the stock FPR!
Not exactly sound engineering practice!!
Might actually help on a turbo civic with a boost dependent FPR, though.

 

injector pulse width not changing = same open time
for a given pressure (existing pump) = "X" amount of fuel out
with a increase in pressure (larger pump in terms of volume) = "X"+"Xi"
("Xi" = increase due to the larger pump)

more pressure will be avaliable at the injector.
-lower the injector "open time" (so that you have the same flow)

Willis
-who disliked hydraulics

 

Pat, who thinks Willie has been using his degree this week

 

 

Willie is exactly correct....i did use a regulator, and it was overwhelmed. However the one i replaced it with was sufficient. EDIT: to answer your question, no you cant run 90psi static pressure.

nick, who liked hydrolics in school


[Modified by Johnny Tran, 10:50 AM 5/2/2002]

 

Just because your ryde was sponsered by.... http://www.blowjax.com/

Will
-who wished he could have hooked his college ryde up with hydr0licks

 

Obviously more than you liked spelling!

sack-who thinks tran is still better than buttcoin

 

The not-box is surely strong enough...

 

LOL, correct.....i didnt major in spelling, but i will destroy assnickel in a one on one spelling bee

nick, no spelling champ, but has "pro-hoppers" and daytons on the crx.

daytons=volva killer