I seen some Direct Port nozzles on nitrousdirect, they were on the F.A.S.T. intake for the f-bodys... think they will fit the truck intake? that would be nice, i wanna run a 75-100 wet shot but want it as safe as possible. seems that is the way to go. survey says...???

 

You dont really want to run that small of a shot with a direct port. The orifice size for 8 fuel nozzles at efi pressure to run less than a 150 shot become so small it can be problematic with tiny particles blocking the very small holes. No kidding....and ask me how I know..lol.

For less than a 150 look into more traditional kits. Either single nozzle or dual type nozzle kits. You will have no problems with any type, wet, dry whatever on that minor of a shot.

 

so there is no good way to filter this junk out? i have seen the n2o in-line filters out there... they are no good?? i have heard rumors and what not of #7 cylinder leaning out, any truth to it? i would most likely run a 100 shot, but this is my only vehicle.. so i gotta play it safe. otherwise i would spray the **** out of it.

 

Inline filters work great but still like 383 said the orfice for that small a shot is EXTREMELY small. A single nozzle will be fine for what oyu want. I sprayed 35 bottles worth of a 100 wet shot on my 175K mile Z71 and when I pulled it to make way for the 418 the cylinder walls and piston tops were PERFECT. A 100 shot with a good tune like you have form Allen will be great and will result in needing new rear tires.

 

I agree with what is said above.That is where the problem lies with small shots on a directport and EFI fuel pressure.WE do tons of custom directports and I have had customers set them up for 100 and 150 but at that level I would suggest a single nozzle a sweet maff kit or our sweet plat kit.
Dave

 

You can and should still use a filter. But at 75 or 100 hp...or even 150 for that matter. You will have no problems running a standard type setup. I wonder what the orifice size for a direct port fuel jet would be at 58 psi for a 75 shot. It would be like a .009 or something incredibly small. A grain of sand or a metal sliver could block a fuel jet on a cylinder.

We were flowing an SX2 kit the other day...the conditions were less than ideal for cleanliness...but still. The fuel jet sizes were like .022. And about 50% of the tests were ruined due to small particle contamination in the fuel jets. it is a real concern. it took some extra time to clean everything out perfectly. Granted...this was a freshly plumbed system with some particulates obviously in the system still.

You could always get a direct port and jet it to like a 200 shot and then use the NX/FJO progressive to electronically limit the shot to 50% of the 200 shot via PWM. I have done this myself and it works fine.

 

so, what is a good wet 100 shot out there? fu%^ it, spray and pray i suppose. what should i expect for a full kit and a purge kit?? 6-900?? good brands?

 

Well as usual, I have a slightly different opinion. I believe a small hp DP can be done safely. If your system is sending contaminates enough to plug up your jets, your are also likely scoring your cylinder walls. Not good. I am going to be using a stand alone low pressure fuel system and dedicated fuel filter(s) for each bank. There should be nothing getting to the jets to clog them. cleaning lines before hook up is a good idea even when not running an extra fuel filter. once again I will be going against the grain to prove it can be done safely, and am surely not the first to do a 100rwhp DP shot or less. Now does this discredit prior input/advice, not hardly, but rather a different approach and opinion. If you now do not want to go DP, we have a new PRO Wet kit coming this week, very, very complete and of the highest quality, using 400hp fuel/n2o solenoids and dual annular discharge nozzles. Give me a pm for a deal, (also have several DP kits).
Robert

 

damn, i am this close... you cant see, but its close. at what point should i look into a different fuel pump?? heard of a walbro, something to worry about yet?

 

Robert,
Its not that it can not be done. We have set up many directport systems on high pressure on low shots. ITS JUST THAT IT IS NOT ADVISED.. Its not that the system is continuasly flowing trash. Its that if for some reason a particle of anything was to flow through there the fuel jet will easily clog do to the orfice size on the jet being the size of a fine grain of sand.
Dave