DopdBrd

iTrader: (25)

Ok, so I planned on getting a standalone but right now money is tight. I have seen people spraying a 150-200 shot off the rail but just want to know what needs to be done for me to do this?

Right now I am running a 255 lph pump in tank with 36 lb injectors and stock FPR. The motor is a 383 with TFS heads flowing 313 at .600 and a cam measuring in at 236/242 .612/.612 with a 110+4 LSA.

I have heard of some people running an adjustable FPR and upping the pressure to handle the big shot.

Anyone have any suggestions?

camscam02

iTrader: (21)

We run the racetronix kit with hotwire kit, 30lb SVO injectors, and have run as high as a .037 fuel jet off the rail and been fine(that .037 feeds my .072 nitrous jet aka 200 hit). I know people have used bigger fuel jets then that for sure so I wouldnt worry about it.

JL ws-6

iTrader: (50)

I've got the same racetronix pump, 42 lb injectors and have run a .044 fuel jet with no problems, fuel pressure stays up at about 65 psi the whole run (have a ga, in the dash and I make a habit of glancing at it, not easy to read but that's where the needle's generally at the whole run)

I don't know if I'd try much more then that though, as I understand it that's about max.

brokenfly

150 shot here for a couple of years on just the stock pump and injectors...i finally put in a pump and some 52lb injectors last year...

just at idle it sits at 64psi but no clue what it is doing down the track fuel pressure wise...
i have not gotten the nerve to run this plate kit's 200 shot...
78n-46f just doesn't seem right to me...(maybe just use a friend's 70n and my 35f someday)...it will be end of this car's stock irs anyhow so i just make do with the 150...
i run the 150 with a 62n-31f...

10.5prooutlaw

Awesome

DopdBrd

iTrader: (25)

how are you guys adjusting your fuel pressure? and could I do the hotwire to a regular 255 lph pump

JL ws-6

iTrader: (50)

I don't, I just run whatever ends up at the rail, and adjust the tune to that. Pita, but it is what it is. Once I put the hotwire and racetronix pump in we had to pull a good bit of fuel to get it back where it was with the n/a tune, nitrous I've always had it there, and that's one reason the supplied jetting has been way rich since the beginning.

camscam02

iTrader: (21)

same with mine, the hotwire kit made the pressure at the rail go way up and we had to take a good bit of fuel away from it. I dont even have a fp guage in the car right now, I need to get the sensor and wire it into my hp tuners so I can keep an eye on it. Just haven't gotten around to it yet.

DopdBrd

iTrader: (25)

Awesome guys, thanks. I was debating selling the nitrous kit but if no one buys it I wanted to keep it. I just don't wanna spend 700 on a Standalone.

DopdBrd

iTrader: (25)

One more question, are you guys running race fuel or just pump gas?

JL ws-6

iTrader: (50)

Torco 118Nos last season I was running. Next season, I'm not sure, migth swap to C16, might try C23, may try the company that bought Torco's fuel recipe's and is now making essentially the same thing (can't recall the name of the company)

Pretty much going to come down to what I can get and what it's gonna cost. I got a price on a drum of C23, guy wanted 1180 for that LOL. I was like yeah I think no LOL.

Gonna see if I can't get in with some other racers, and get one big purchase in with VP and try to see what I can buy it for that way, and if it's still retarded, stick with C16

camscam02

iTrader: (21)

I have a stock cube motor with stock compression so we just run straight 100. But we will be stepping up to c16 or a torco fuel(which ever will be easier to get) prolly for safety once we go over 200 with this car.

DopdBrd

iTrader: (25)

So would I be safe running pump gas or should I go ahead and get a standalone?

JL ws-6

iTrader: (50)

How often are you going to be spraying? If you're only spraying at the track, have the rear o2's off and no cats (I hope both with nitrous, since it will kill both quickly) then I'd just go to the track, and when you get there, try to have a little less then 1/2 a tank, 1/4 would be perfect, and just buy 2 gallons of 116 and put it in the main tank. That will be enough to mix the octane up so you'll be safe.


If you're gonna be playing on the street alot, and want to be 100% safe, I'd do a standalone, and keep 116 in it. The small amount that you'll use thru a standalone will be so small running the highest octane you can isn't gonna be much of a cost difference.

Twotonefreak

iTrader: (11)

I've been wanting to run a 200(.72&.38) off the rail of mine also. 255 in tank and 42lb'ers. I've been running a 175 hit for a couple months no with now issues.

Nitro Dave's Nitrous Outlet

iTrader: (25)

It really depends on what power level you are at. Not all cars react the same. I have seen variences from car to car. With out the hot wirekit the replacemnt fuel pump is good for about 500hp total. With the Hotwire we have seen them on an average support 650 rear wheel hp total.

As long as you are not using a directport you may be ok. If you have a directport I dont see it happening.

I would suggest putting a fuel pressure gauge on the car and watching it as you move up in the power level.
Dave

JL ws-6

iTrader: (50)

I have a hotwire wired to the battery in the trunk, and have seen no issues makign enough power to run 143 in the 1/4 with a 3350 lb car.

I do hav a fuel pressure ga, and no fuel pressure drop that's measurable during a run, stays at about 60 the whole time, ga works good too, and it's a bigger 2 5/8 size so it's easier to read.

I was using a 42 fuel jet off the rail, fwiw.

Twotonefreak

iTrader: (11)

Thanks Dave.

DopdBrd

iTrader: (25)

Would it be alright running pump gas? Not trying to be cheap, but the hotwire is significantly less expensive than a standalone and I want to be able to spray it this year LOL

nick.celis

iTrader: (11)

it should be fine. im running a 200shot stock bottem end, 42lb green top injectors, walbro 255lph pump, and i use 93 pump gas. Though make sure your fuel filter isnt clogged up, because mine was, and it was hard trying to keep fuel in the rails, it would suck to much out of the rails before they could even fill back up. But to answer your statement, you can use pumpgas, its all in the tune