Turbos and Nitro..............

[jl222]

When Precision Auto was talking to Fast Electronics about which system to use on the 222 car they mentioned a car using nitro and one of ther systems making 4500 hp. I assumed it was turbocharged.

                                            JL222

    I assumed wrong its a roots type blower. The guys at Precision Auto thought thought nitro would be real hard on turbine wheels as the nitro burns so far and hot in the exhaust.

                       JL222

[jl222]

I tryed to feed a 698" blown alky chevy with a Fast system once and ended up going back to mech. inj.. 16 nozzles, 4 pumps and 4 days on the dyno.
I don`t think they make nozzles big enough or pumps for that matter. It took a room full of batterys just to keep the pumps running. And we had to separate the dfi from everthing else that was 12 volt.
Nitro would take alote more, I just don`t think its possible. I could be wrong, anybody seen it done?
                                        sign, Boom Boom.

 We will be using a waterman cam driven fuel pump to get around the electrical drain (on our new Fast system) as we don't have an alternator, just 2 batteries.

            JL222

[promachine]

That seems to be the ticket. Good luck!

[dieselgeek]

I tryed to feed a 698" blown alky chevy with a Fast system once and ended up going back to mech. inj.. 16 nozzles, 4 pumps and 4 days on the dyno.
I don`t think they make nozzles big enough or pumps for that matter. It took a room full of batterys just to keep the pumps running. And we had to separate the dfi from everthing else that was 12 volt.
Nitro would take alote more, I just don`t think its possible. I could be wrong, anybody seen it done?
                                        sign, Boom Boom.

 We will be using a waterman cam driven fuel pump to get around the electrical drain (on our new Fast system) as we don't have an alternator, just 2 batteries.

            JL222

Another trick to avoid power coupled noise, is to run a decent sized capacitor for the FAST.   Does a nice job of smoothing out the rpm spikes caused by other electrical noise on the shared power source.

-scott

[ddahlgren]

If you need a capacitor there is something else wrong. Generally poor grounding either Battery negative as in ground loops poor connections or wire size. You can also have poor grounding inside the ecu. Any system that uses battery - as a sensor return wire would be suspect. Well designed systems have an internal ground plane isolated from battery- for sensor returns(ground sort of). You might also check the altenator as bad diodes will cause all sorts of problems most suspect or me are single wire import ones.
I had a fast system I was called to fix that was firing the ignition with key on engine off and not just one you could hear the coil buzzing away pretty shakey setup in my mind.
Dave

[GH]

JL, will the cam driven fuel pump have enough pressure while cranking to fire the injecters?

[jl222]

JL, will the cam driven fuel pump have enough pressure while cranking to fire the injecters?

  That was one of my concerns along with primeing because pump is above gas,but they say no problem. Will find out soon, i hope, no parts yet, today or tommorrow . If a problem we'll tap in our existing electric  fuel pump that we use to prime with to pressurise the system.

                             JL222