how much power?????
02-03-2009, 06:19 AM
#1
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how much power????? so i have two 255lph intank pumps and 60lbs injectors. im useing stock line still. what is the real world max out put of this fuel set up on a turbo 364 ls2
im thinking 750 to 800rwhp max and that might be to high. any ideas guys what would be doable and safe
i know a FPR is going to be the weak point here and the stock line feed line
thanks guys
im thinking 750 to 800rwhp max and that might be to high. any ideas guys what would be doable and safe
i know a FPR is going to be the weak point here and the stock line feed line
thanks guys
02-03-2009, 02:49 PM
#5
Might want to try the Fueling & Injection section of the site, probably get more responses in there. I've heard that 60's with a boost referenced regulator and two 255lph pumps on stock lines will max out somewhere between 700rwhp and 800rwhp depending on other variable's in your setup ie. manual/auto, rear end etc.
02-03-2009, 02:57 PM
#6
I had my 60lb. injectors and made 1089rwhp with them. I ran on the street everyday with a little over 900rwhp with 60lb. injectors.
The injectors hp are rated at 42psi. With a FPR you can turn up the fuel pressure to say 55 or so and with a 1:1 rise in pressure per pound of boost you can make alot more power. Is this the safest way, no, but I used it like this for almost 2 years without problems, until I changed to a Fast xfi,xim ecu.
The injectors hp are rated at 42psi. With a FPR you can turn up the fuel pressure to say 55 or so and with a 1:1 rise in pressure per pound of boost you can make alot more power. Is this the safest way, no, but I used it like this for almost 2 years without problems, until I changed to a Fast xfi,xim ecu.
02-04-2009, 12:53 AM
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cool hunter good to know. i run 58psi right now with the FPR in the tank so ill just upgrade to a aftermarket one and boost REF. with 1:1 sounds like a good starting piont
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02-04-2009, 02:16 AM
#8
I'm running two Walbro High Pressure 255lph in-tank pumps, Mototron 60lbrs, and an Aeromotive FPR through stock lines. The injectors are maxed as in 100% duty cycle at 700rwhp through a six-speed and stock rear.
I have also heard people run 800+rwhp with my set-up except using a -8 feed line and the stock feed as the return. But, Intimd8 says he has made over 1000rwhp multiple times using stock lines like me so I don't think that is the problem. Could be though, who knows. I'll let you know when I get tired of 700rwhp and add more boost and a -8 feed line.
On second thought, I'm probably just going to add meth this summer. That should allow me to make a little more power and back off the duty cycle on the injectors.
Hunter, what was your duty cycle like at 1100rwhp? I thought I was bad running my injectors at 100%. I've always heard you want to stay around 80-85% max? What exactly is the reason for that? Does it increase the chances of an injector failing or what?
I have also heard people run 800+rwhp with my set-up except using a -8 feed line and the stock feed as the return. But, Intimd8 says he has made over 1000rwhp multiple times using stock lines like me so I don't think that is the problem. Could be though, who knows. I'll let you know when I get tired of 700rwhp and add more boost and a -8 feed line.
On second thought, I'm probably just going to add meth this summer. That should allow me to make a little more power and back off the duty cycle on the injectors.
Hunter, what was your duty cycle like at 1100rwhp? I thought I was bad running my injectors at 100%. I've always heard you want to stay around 80-85% max? What exactly is the reason for that? Does it increase the chances of an injector failing or what?
02-04-2009, 02:57 AM
#9
My friend made 730 ish with a single 255L pump in the tank ,stock lines , i think the injectors are the 75 pounders tho, this was a iron block 408 ported L92 heads L76 intake with NW 90mm throttle body , and 10 psi from a little P1sc.
O yeah , a alky control methanol injection system using two nosels
O yeah , a alky control methanol injection system using two nosels
02-04-2009, 03:14 AM
#10
(so i have two 255lph intank pumps and 60lbs injectors. im useing stock line still. what is the real world max out put of this fuel set up on a turbo 364 ls2
im thinking 750 to 800rwhp max and that might be to high. any ideas guys what would be doable and safe
i know a FPR is going to be the weak point here and the stock line feed line
thanks guys)
With the twins in the tank, your good for 1000 HP, i am running a twin race tronix Lonnie performance double pumper too,
OK as far as the injectors go , #60 are good for 700+ RWHP at 58-60 psi(fuel pressure
Now if you run methonal injection , you can supliment 10-15% meth with most systems, so you can make over 800RWHP with the meth injection,
ok as far as the stock returnless line and system, there are many LS1 cars making 700 rwhp, it is risky but as long as your tunner is watching whats going on and not going lean , your good.
If you go with 8 an feed and 6an return with a 1:1 FPR , at 15 psi u will have about 75psi fuel pressure
# 60 pound motrons i think are rated at 60pounds at 43lbs of fuel pressure, and 65 at 58lbs of fuel pressure, so at 75 psi of fuel pressure the #60's should spray like a #70 pound fuel injuector
With my new forged 346LS6 and 15 PSI (D1sc) i am going to see how far i can go on stock returnless line and my #60 motrons,
remember i will be using my Alky control methanol system
I am looking to make 700RWHP
im thinking 750 to 800rwhp max and that might be to high. any ideas guys what would be doable and safe
i know a FPR is going to be the weak point here and the stock line feed line
thanks guys)
With the twins in the tank, your good for 1000 HP, i am running a twin race tronix Lonnie performance double pumper too,
OK as far as the injectors go , #60 are good for 700+ RWHP at 58-60 psi(fuel pressure
Now if you run methonal injection , you can supliment 10-15% meth with most systems, so you can make over 800RWHP with the meth injection,
ok as far as the stock returnless line and system, there are many LS1 cars making 700 rwhp, it is risky but as long as your tunner is watching whats going on and not going lean , your good.
If you go with 8 an feed and 6an return with a 1:1 FPR , at 15 psi u will have about 75psi fuel pressure
# 60 pound motrons i think are rated at 60pounds at 43lbs of fuel pressure, and 65 at 58lbs of fuel pressure, so at 75 psi of fuel pressure the #60's should spray like a #70 pound fuel injuector
With my new forged 346LS6 and 15 PSI (D1sc) i am going to see how far i can go on stock returnless line and my #60 motrons,
remember i will be using my Alky control methanol system
I am looking to make 700RWHP
02-04-2009, 08:46 AM
#11
I had two bosch 044 fuel pumps,-10 feed and the stock feed line as a return line. The difference in my setup to allow the extra fuel flow was my 2 fuel pumps. They are rated for 750hp each.As far as duty cycle, I am sure it was screaming for help! LOL!
02-04-2009, 09:08 AM
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ok guys it looks like im on the right track here.
now with that said who has pics of bulkhead fittings come out of there stock sending units? or are some of you use the quick disconnet fittings on the sending to a -8an line.
i dont want to go that way. pics would help
2nd hunter were can i get those pumps from and how well do they fit in the tank
this is mostly street car by the way
thanks guys love the info
keep it coming
now with that said who has pics of bulkhead fittings come out of there stock sending units? or are some of you use the quick disconnet fittings on the sending to a -8an line.
i dont want to go that way. pics would help
2nd hunter were can i get those pumps from and how well do they fit in the tank
this is mostly street car by the way
thanks guys love the info
keep it coming
02-04-2009, 09:28 AM
#13
ok guys it looks like im on the right track here.
now with that said who has pics of bulkhead fittings come out of there stock sending units? or are some of you use the quick disconnet fittings on the sending to a -8an line.
i dont want to go that way. pics would help
2nd hunter were can i get those pumps from and how well do they fit in the tank
this is mostly street car by the way
thanks guys love the info
keep it coming
now with that said who has pics of bulkhead fittings come out of there stock sending units? or are some of you use the quick disconnet fittings on the sending to a -8an line.
i dont want to go that way. pics would help
2nd hunter were can i get those pumps from and how well do they fit in the tank
this is mostly street car by the way
thanks guys love the info
keep it coming
What i did was put a -10 line into the tank and it was connected to a 90deg. fitting that came out of the tank up top where the stock lines are located. Then I attached a -10 line to the other end of the fitting an ran that to the fuel pump, then from the pump to the fuel rail.
