BB6-213

Hey guys, I am looking for close to 700whp out of my h22 and I want to make sure my fuel system will be sufficient:

The whole system:
PTE 1000cc injectors
Walbro 255hp Intank
STR fuel rail
Aeromotive FPR
(dont know if it matters, but Alky Injection)

I am also going to get a Bosch 044 Inline Fuel Pump and run a -10an line from the tank.

So what do you think...700hp reliebly with this setup?

qfast817

youll be pushing the injectors but it can be done with the bosh pump and sumped tank

boosted k20

sump the tank no need to run the walbro in tank

tony1

Not reliably....

BB6-213

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony1 &raquo;</TD></TR><TR><TD CLASS="quote">Not reliably....</TD></TR></TABLE>

So pretty much if I want a reliable 700whp setup i will have to sump the tank for sure? What would be a good pump to use if I sump it that would let me keep the 1000cc's, or will those just be too small?

BTW! I might be tuning on e85 also.

0Synapse Motorsport

Sump the tank, and if your using e85 I am sure your going to have no choice, might need larger injectors too.

tony1

You'll be lucky to see 520whp on E85 with 1000cc injectors. If you're going to do E85, dual bosch pumps and 1600's.

Sumping the tank isn't required, but enough pump and injector is. 1000's with a single walbro or bosch pump is not enough for an honest and reliable 700whp. Maybe 1 700whp dyno pull with it going lean up top.

qfast817

ive seen 682 on a single bosh pump and 1600cc

tony1

That's 1600's and gas. The 1600's are big enough to make up for the fuel pressure falling cause the pump is too small. 1000's and that pump is a different story. And on E85, 1600's and a single bosch pump would only be good for a bit over 500.

wHOAlly

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by qfast817 &raquo;</TD></TR><TR><TD CLASS="quote">ive seen 682 on a single bosh pump and 1600cc</TD></TR></TABLE>

im willing to bet ur duty cycle starts to skyrocket on the top end

djdxm

if you did the 1600's w/ twin bosch pumps in a non-sumped tank wouldnt the fuel lines be too small for 700whp?

tony1

You wouldn't do dual bosch pumps through a factory feed line.

Boostfed

Just fyi a friend of mine Freddy Clark has 1000cc injectors , stock lines, stock FPR with B&M and a Walbro 255lph HP pump and has gone 9.68@157mph, IT does get lean at the top though we know. Loses fuel pressure up top. He is doing the fuel system over the winter


Things can be done, reliably? I dunno, how long it will last I dunno but it has lasted him 3+ years now BUT not at his current power levels.

tony1

How heavy is that car Terry?

Boostfed

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony1 &raquo;</TD></TR><TR><TD CLASS="quote">How heavy is that car Terry?</TD></TR></TABLE>

Pretty light I know BUT I don't know the exact answer to that.

tony1

Well, pretty light and 157mph = around 620whp, which has been done time and time again on a walbro and 1000's.

Flamenco-T

You can sump the tank pretty easily. I did a 3" elbow and not losing any ground clearance but harldy 1.5". The nicest thing about bosch pump is that it can be installed higher than the outlet of the sump unlike the aeromotive.

stan

Boostfed

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony1 &raquo;</TD></TR><TR><TD CLASS="quote">Well, pretty light and 157mph = around 620whp, which has been done time and time again on a walbro and 1000's.</TD></TR></TABLE>


Exactly BUT if it is going lean on a light set up , my case in point would be I do not think it will be sufficient for the OP's set up in a Prelude and definately not for 700whp. I was not disagreeing with you Tony

tony1

lol, my bad, i thought you wanted to play.

Boostfed

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony1 &raquo;</TD></TR><TR><TD CLASS="quote">lol, my bad, i thought you wanted to play. </TD></TR></TABLE>

Play what? Space Invaders?

*Boostwerks*

I think the bosch pump and 1600's would be enough to keep the fuel from falling off up top. ?

But If you need any help with the setup man, just let me know! I moved up to Loveland over the summer, and I think I remember you saying you lived up north.

BB6-213

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Boostwerks.com &raquo;</TD></TR><TR><TD CLASS="quote">I think the bosch pump and 1600's would be enough to keep the fuel from falling off up top. ?

But If you need any help with the setup man, just let me know! I moved up to Loveland over the summer, and I think I remember you saying you lived up north.
</TD></TR></TABLE>

No way bryson, I live in L-town too, where about do you live, we are deffinatley going to have to hang out because I don't really have anyone up here that is in to hondas that much.

*Boostwerks*

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BB6-213 &raquo;</TD></TR><TR><TD CLASS="quote">

No way bryson, I live in L-town too, where about do you live, we are deffinatley going to have to hang out because I don't really have anyone up here that is in to hondas that much.</TD></TR></TABLE>

I'll PM ya, so I don't ruin your thread...haha.

HamiltonRex

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony1 &raquo;</TD></TR><TR><TD CLASS="quote">That's 1600's and gas. The 1600's are big enough to make up for the fuel pressure falling cause the pump is too small. 1000's and that pump is a different story.</TD></TR></TABLE>

after i was finished reading this, i went back and looked at it again, im just thinking about something here, may be completely wrong though, and probably am.

if the pump is too small.. fuel pressure dropping off to say 40psi by redline and the 1000cc's are at max duty cycle, its done, no more fuel can be put into the engine anyway with that setup since you cant turn up the pressure or open the injectors anymore... true?

So now with 1600cc injectors and the same pump, if the pump is dying with the 1000's to such a low fuel pressure it would drop with the 1600's as well.. untill you got to that point where it was maxed with the 1000's, now wouldnt it beging to drop more even past that.. say from 40psi down to 35psi? Heck the injectors are capable of flowing more fuel but the pump cant supply the fuel and the pressure is dropping, so even if they were techincally supposed to be spraying more fuel there not because the pressure isnt there.. true?

What im trying to get at here.. if a pump is maxed out and the fuel pressure is dropping up top, how would a bigger injector help, or make up for the loss in pressure? The pump can only flow so much more fuel..? Like a 2" garden hose with a 3" tip and the same volume wont outflow say a 2" garden hose with a 2" tip and the same volume.

I just dont see how a bigger injector can be used in place of a smaller one to help compensate for the fuel pump not flowing enough cfm.

Sorry if thats hard to explain.. but i think i better stop typing/thinking, smelling burning rubber here

Or were you commenting on the injectors when using E85? Im really not sure on this, not trying to argue just understand, thanks!


Modified by HamiltonRex at 9:30 PM 12/19/2006

Suprdave

1000cc Injectors aren't any good for more than an Actual 630whp without leaning out. Doesn't matter what fuel pump is behind them. That's with 55psi Base Pressure. I've tested this on multiple setups and fuel pumps...now, if you run 80psi base or something rediculous...then you can make more. That's not a good idea tho...