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91oct 1000 horse system. will this work

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Old Feb 22, 2008 | 05:48 PM
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Default 91oct 1000 horse system. will this work

first will this work and work good. this is for a boosted motor

start with single 255 pump in factory tank. put 42lb(or next size up) injectors in. put 91oct in this tank
next put 5 galen fuel cell in spare tire hole in back or car. run one 255 pump in it. with different fuel lines. and run second set of 68 lb injectors off of second kit. put 110 oct in this kit.
now using big stuff 3 program

i start to building boost up to around 10psi first set of injectors is working. when competer sees that first set of injectors is has reached 80% duity cycle. secound set turns on. and supports up to 18 psi.

so in my low boost and daily driving i am just using 91oct. but when i race at the track( cough cough or the street cough cough) and i turn my boost presser up. the second set kits on and i dont have to use meth or nothing.

so please let me know.
any changes.
and why you would change.
there is a company ( yes a sponsor) that has done this before and says it works. i want more input.

Thanks
BIGBIRD
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Old Feb 24, 2008 | 08:18 AM
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It has been done in the Grand National world and will work. However, it is much more cost effective to use a meth. kit such as the Razor's with the dual nozzle. It will send enough of any liquid in on a MAP controlled ramp to support say... 1000 HP with 60 lb motrons. You can call Julio Don @ Alky control and speak with him direct, he is very helpful.
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Old Feb 24, 2008 | 10:31 AM
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thats how the ford gt's do it, but spending 1000 bucks on injectors alone doesnt sound too appealing
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Old Feb 24, 2008 | 02:33 PM
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well i dont want meth. i can put two ruel pressure gauges in and if one dorps i can let off. this why all i depend on is gas. like if i run out of 110. just turn my boost down to 12 and run on the 91
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Old Feb 26, 2008 | 07:59 AM
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how are you mounting the injectors? pics please
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Old Feb 26, 2008 | 08:50 AM
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I will be running a staged injection setup (BS3) with my new build in March. Speed Inc. (specifically Jim - INTIMD8) has run this setup before with success and Kurt at W2W has done this with their car as well.

My setup is going to be the fuel system I have now stock tank with a walboro and 42ish lb injectors. Then a completely seperate system for race gas - small custom cell built into the spare tire area, seperate pump, lines, rails, regulator, injectors (75lbs), etc. Same basic idea that you have --- cruise around on pump gas (Kurt told me he was even considering 87 octane!!!!) and use the race gas when needed. That way you aren't burning $7/gallon fuel sitting at a stop light...ha!

You can't use the plastic intakes since you will need a second set of injector bosses, but you can use the carb style manifolds and weld in new injector bosses and stands for the rails. Of course you can use a custom sheetmetal manifold as well.
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Old Feb 26, 2008 | 12:12 PM
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Originally Posted by MIGHTYMOUSE
how are you mounting the injectors? pics please
i don't have a why. this was more of a questions thread. of can this be done?

mightymouse what outane do you run on the street and what boost

and what octane and boost do you run at track. and do you have a single injector system?
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Old Feb 26, 2008 | 01:51 PM
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i run around at 17# of boost and methanol injection, thats around 800rw

at the track have run as much as 23# boost which is just over 1k at the tires on 104 unleaded and methanol injection

i have 8 96# injectors for gas and run a twin methanol nozzle set up totalling an additional 100# of fuel.
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Old Feb 26, 2008 | 04:16 PM
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Originally Posted by MIGHTYMOUSE
i run around at 17# of boost and methanol injection, thats around 800rw

at the track have run as much as 23# boost which is just over 1k at the tires on 104 unleaded and methanol injection

i have 8 96# injectors for gas and run a twin methanol nozzle set up totalling an additional 100# of fuel.
so can i just run a high to low impedence converter and like 120# injectors or is bs3 the way to go?
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Old Feb 26, 2008 | 10:18 PM
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if you want to run two octanes of gas i think the best approach is two sets of injectors

bs3 can run two sets of injectors, high or low imp.
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Old Feb 27, 2008 | 05:36 AM
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Another option is to run twin intake 255's in the fuel cell with Y block and one way check valves into the line coming from the stock tank, on the feed side, then run a truck tank selector valve on the return side. Once wired up correctly, one flip of a switch would power on the pumps in the fuel cell(2nd pump coming on with a hobbs switch at 5lbs of boost or so), kill the stock pump, and flip the return line(on a delay switch so very little pump goes into the race gas cell and vice versa). Flip the switch back and your back on cheap pump gas!

This is nice over the dual injector setup because you are now on PURE race gas, not a mix of race/pump and can be switched on the fly while driving down the road. No longer a need for any water/meth injection as long as your iat's stay low enough.
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Old Feb 27, 2008 | 07:13 AM
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yes that would work provided you remember to use it.

the delay in bringing the good fuel up the line and through the rails would keep me afraid of switching it during WOT
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Old Feb 27, 2008 | 07:43 AM
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Here is some good discussion on INTMD8's setup -- which is similar to what skinnies posted above.

https://ls1tech.com/forums/showthrea...aged+injection

Some more discussion - although it started off talking about E85:

https://ls1tech.com/forums/showthrea...aged+injection
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Old Feb 27, 2008 | 07:52 AM
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Originally Posted by MIGHTYMOUSE
yes that would work provided you remember to use it.

the delay in bringing the good fuel up the line and through the rails would keep me afraid of switching it during WOT
Yeah I talked with a few different guys at aeromotive and they said it COULD be switched at wot, but not really recommended.

On my setup I use relays to switch boost levels, so my high boost relay will be wired into the switch with the race fuel pumps. This means I CAN NOT go into high boost unless it is on the race gas cell.
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Old Feb 27, 2008 | 01:03 PM
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Originally Posted by skinnies
Yeah I talked with a few different guys at aeromotive and they said it COULD be switched at wot, but not really recommended.

On my setup I use relays to switch boost levels, so my high boost relay will be wired into the switch with the race fuel pumps. This means I CAN NOT go into high boost unless it is on the race gas cell.
Do you have your setup done yet? Because if so i would like to see pics. It sounds like a pretty bad ***/ some what simple setup. Deff keep up the good work.
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Old Feb 27, 2008 | 05:50 PM
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Originally Posted by spare tire
Do you have your setup done yet? Because if so i would like to see pics. It sounds like a pretty bad ***/ some what simple setup. Deff keep up the good work.
Not done yet, just painted the engine bay and the motor will go back in here in a few weeks.
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Old Feb 28, 2008 | 12:20 PM
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Originally Posted by skinnies
Yeah I talked with a few different guys at aeromotive and they said it COULD be switched at wot, but not really recommended.
I considered that configuration before doing staged injection. Even if the race fuel was Y'd in directly at the rail (with check valves) there would be a 3+ second delay before the rails were completely cleared of pump fuel.
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Old Feb 28, 2008 | 01:28 PM
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Originally Posted by INTMD8
I considered that configuration before doing staged injection. Even if the race fuel was Y'd in directly at the rail (with check valves) there would be a 3+ second delay before the rails were completely cleared of pump fuel.
I was going to Y right before the rails also, but don't trust it enough to switch at wot either after talking to aeromotive.
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