dual feed, cont.

wanna see it?

  • Total voters
    56
  • Poll closed .
HRDROKN said:
And so there's the other factor... with that kind of flow the recycle rate would be quite high? Hard to imagine there would be a density issue in the first place!

Then again... Can't recall the last time I read a thread entitled "I have too much PSI at WOT". Could have missed it.
Click to expand...

okay, so theres no desity issue. plumbed as they are plumbin em how much volume is moving past plunger #4?

too much psi? i know a puller (the 1000 hp kind) that is lowering his fuel pressure as we speak. why do you think he is doing that?
 
lowering it from 70 to 40

right now its plumbed the way most of yours are (feed stock n frt/return from stock location)

why do you think he is lowering it?


*why didnt you vote? your way of saying you could care? lol
 
Why, because he found something that works for him. Not every combination is the same.
 
DTanklage said:
lowering it from 70 to 40

right now its plumbed the way most of yours are (feed stock n frt/return from stock location)

why do you think he is lowering it?


*why didnt you vote? your way of saying you could care? lol
Click to expand...

Last time I checked voting was a preference in the good ol' USA.

And your right I don't.


And probably he realized that making 1000 ponies is doable on 40psi instead of 70. Less wear and tear on components.

But I'm sure you will argue that as well. No matter.
 
MAXTORQ said:
Last time I checked voting was a preference in the good ol' USA. And your right I don't.

And probably he realized that making 1000 ponies is doable on 40psi instead of 70. Less wear and tear on components.

But I'm sure you will argue that as well. No matter.
Click to expand...

how does lowering the fuel pressure make less wear and tear on the components?

i think he would be better off to raise the pressure. raise it til he gets to the point where it just cant quite hold the pressure at full load. that way he will know that its really being fed from ea side and it will keep #4 and adjacent barrels cool. either that or replumb as i suggested

it has only been on rollers once, never on a engine dyno. slipped a lot on the rollers but still made 13+

mighta been corrected tho cuz he lives in altitude

P-7100and62-65-13016.jpg


notice...caffine free!
 
Some food for thought...

I run a FASS 200 gph pump dual feeding my pump (normal feed and front feed) factory return. 40 psi spring in the FASS. Under full load, my fuel pressure might drop 0.5 psi...

I think with a high enough flowing lift pump the benefits of such a mod are miniscule (you are already pumping a ton of fuel thru the injection pump), however with a lower flowing lift pump such a mod could be beneficial for maintaining the coolest fuel all the plungers. This doesn't seem to be necessary on a 12mm pump, maybe a 13mm or larger... But if you are running a larger injection pump you certainly have your lift pump situation taken care of (I would hope anyways)...

Another pic I took...

DSC05080.jpg
 
should provide more cooling with a decent flow thru the pump... I've always wanted to pull the return line after the regulator to see how much flow it's actually pushing thru the pump.
 
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