without way overdoing it like i see soo many people suggest, but still staying safe.. what can i use (as many stock parts as possible) to fuel my new FI combination to 600rwhp(MAX)?

1.fuel rails from ls1 speed or can i just gut the stock one?

2.42.5 lucas injectors or 42# green tops from ford or 50# msd's

3. stock pressure line up from the tank with or without an inline 255 on top of the walbro 340 in tank already, or designated return line or new pressure line and stock pressure line as the return line?

the in-tank pump is wired via relay directly to the battery, not running off the computer supplied voltage.

i have a feeling it can be done with the stock lines and stock rails.

 

I was close to 600 RWHP on my old system

you'll need atleast 42's

single intank is pushing it, i had to hotwire the pump and boost the alternator voltage to get enough fuel.

stock lines will be "ok" but bigger lines will ease the job of the pump.

My old system is coming out <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

 

well we both know i want ur old 'system' but you said it is already sold correct?

what is the max rwhp for the green top 42#'s?

 

the injectors are gone

but i've still got rails and lines

i ran to 95% on them at 13 psi

 

I had my stock rail modified for individual lines using -6AN fittings on the front and rear of each rail (crossover deleted).

Details here: www.turbo-ws6.com/fuel.html

 

i wanted to buy the rails WITH the regulator

 

hold up jerry i asked for em first!
<img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> what do you want for the rails and lines (email me) and you mean you ran "them" at 95% capacity at 13 ps1.. the injectors or the fuel lines, i assume the injectors.

<small>[ April 17, 2002, 03:53 PM: Message edited by: MIGHTYMOUSE ]</small>

 

Thats what I am going with.. 42lb injectors..

 

i sent u a pm harlan. send me one or better yet an email please yes thankyou <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

 

Reckless that fuel system is sweet!!!! Do you have a 98 ls1 car? Also did you have to buy a new tank to weld onto? I hope you didn't cut and weld your old one.

 

Man, maybe i shouldnt have passed up the other sysem when i got the injectors
Man if i just had more cash
But i only want to make 500 to the wheels.
Right now any ways

 

ahhh ha! david you bastard i knew you were lieing to us!!!! <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> damn im good <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> now to find out what form of Forced Induction you went with <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> see you need all that power to over come yer panzieness to launch that friggin car!!! <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> j/k man all in good fun! <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

 

of course im going fi cus the motor is 9.0 compression.

 

1.fuel rails from ls1 speed or can i just gut the stock one?

OK I went with the LS1SPEED fuel rails for one simple reason. Damn easy to just throw those on. Boom...no more fuel rail issues. However you can get away with just modifying the stockers by losing the pulse damper between the two rails which can be a restriction. It's up to you on that one. But remember you still have the lines to deal with.

2.42.5 lucas injectors or 42# green tops from ford or 50# msd's

The 42.5lb injectors are fine as long as you have an external regulator that references boost. This does mean eliminating the one in the tank. Which is a good thing anyway since I'm a little worried about it being overwhelmed by the extra volume of the pumps your gonna want to run.

3. stock pressure line up from the tank with or without an inline 255 on top of the walbro 340 in tank already, or designated return line or new pressure line and stock pressure line as the return line?

I would do exactly that. Use the stock feed line as the return. Run a new feed line off the 2nd pump.

the in-tank pump is wired via relay directly to the battery, not running off the computer supplied voltage.

Both the stock pump and the Walbros respond nicely to a voltage increase. Steve (Just Me) had a real nice setup that didn't cost an arm and a leg. Wire it up to a WOT switch and it should work.

i have a feeling it can be done with the stock lines and stock rails

Well.....I've seen plenty of people run over 500RWHP with them. 600RWHP could mean BOOM time.

Try it on a dyno first with the stock stuff and watch your fuel pressure. If it drops at all....back to the drawing board for ya.

Well anyway that's my two cents...

 

i will definitely have a boost referenced regulator somewhere along the return line either at the rail or before the tank.

thanks for the response

 

any companies make a 'strap in' voltage booster? i'd like to go for that as long as i don't fry the b**tard! too much of a pain to replace!

 

you can get a kenne belle bosst a pump. It increases voltage to my pump to 17+ volts at 3-4 psi. It can actually do this for TWO pumps as i have the heavy duty model.

 

link/price/install pics/tips c'mon hook me up!

say im running 2 255L pumps in series at like 17 volts and 70psi.. how much fuel will that flow? is there a maximum for the single stock pressure line or is there just a 'most efficient' one..

<small>[ April 22, 2002, 07:39 PM: Message edited by: MIGHTYMOUSE ]</small>

 

I was thinking about installing fittings in the end of the stock rails and using the stock line as the return. I just need to figure out what size line to run up to a "Y" block, and then into each rail. I was thinking that 3/8" line should be big enough, but I really have no idea.