Nitrous plumbing A1A...??..

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  1. j par

    j par Well-hung Member

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    I was wondering if anybody knows the ins and outs of plumbing nitrous?
    Thank you for your time and experience...
     
  2. fishmens67

    fishmens67 Well-Known Member

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    :popcorn:
     
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    • j par

      j par Well-hung Member

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      Gotta start somewhere...
       
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      • j par

        j par Well-hung Member

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        Interesting 52 views and not anybody with one idea! LOL Looks like I'm going to be a forum leader on this one..
         
      • 318willrun

        318willrun Roadkill '80 D150

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        ok pal, i'll help you get your baby on the bottle ….
        :thumbsup:

         
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        • flyfish

          flyfish C8H18+N2O = :-D

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          150 shot and under you are fine tapping into the fuel line to your carb (assuming you already have a good electric pump and sufficient supply). Over 150 I would get a dedicated line/pump/and regulator. The nitrous side is self explanatory.

          For what its worth, this is what I did years ago with my cheater system. I was tapped into my main fuel line, running a 150 shot. I had one side of my regulator feeding the carb and the other side feeding the N2O system...tried a 180 shot and it was fine as well, but I was at 5800' (i.e. I had more fuel to spare than sea level folks).
           
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          • Hot Metal

            Hot Metal '69 440 Cuda

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            My set up for single carb back in the 80's. 1st ran a cheater kit on the 340 car, then a Big Shot kit on the 446 car.
            2 x 1/2" outlets from tank, 2 x Holley Blue pumps, 1 for N20 fuel only, 2 x 1/2" lines (in-line filters) all the way up to regs, 1 reg for N20 fuel, 1 for carb with 3/8" lines. Micro switch activated on carb@WOT on the hit, 2 x Fuel guages set up on cowl. Ran like this for 3 years with up to a 250 shot, never tipped a plug (2 steps colder from stock for N20, NGK7's), no issues at all.
            Don't necessarily need 2 pumps but if spraying 175+hp you need good reliable constant N20 fuel pressure to make power. The way I looked at it was if I'm running a 150 shot and running say 10.5's I'm gonna go up to a 200>225 shot to run 9's, you can tune the 150 shot to try and improve, (leaning things out) but 5/10ths is a lot to gain unless your way too rich or too much timing etc. Having that set up enables you to spray more as most end up doing, do it once. Never ran dual carbs.
             
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            • Cope

              Cope Fusing with fire

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              Heres a few tricks i use.

              Take a section of hard line and mark it every inch. Now put tour bender dead on one of the marks and make a 90 degree bend.
              This tells you how far after the mark the tube starts bending.(not all benders start bending right away.) It also tells you how much line a certain radius uses.

              These same tricks also work when building cages.

              So if your first line goes 3" then bends just make the nwxt one 4" then bend and you end up with nice matching lines. It also helps you measure out the length of raw (un bent) tube.
               
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              • j par

                j par Well-hung Member

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                I want to do a stand alone one gallon race fuel and pump for the fuel side.
                I'm starting to understand the Jets go in just before the cheater plate?(according to the Utube videos I've been watching)
                I want to start small 50-100-150 and not get in any trouble... My trouble is figuring out how to run two carburetors..
                First I believe I'll need two sets of 25-50-75 Jets??
                The big question is do I have to get four solenoids question mark II for the fuel and two for the nitrous oxide? Having a tea going to the both or can I run a tea after one solenoid and go to both cheater plates? Of course the second of the two seams easier and cheaper... What comes to mind is the nitrous hitting 80 wall and clogging?..
                I'm having trouble finding any information on setting up two carburetors. Most everything out there is for 1. And there are a lot of inexpensive one carburetor setups but the price seems to double for two carburetors.. in my mind why can't I buy a one carburetor setup and just buy one more cheater plate and split it into that one?.. I remember one member showing where he jammed a splitter nozzle into the vacuum Port of the carburetor... Which I don't want to do that but just saying there's ways of thinking outside the box I'm sure....
                 
              • j par

                j par Well-hung Member

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                LOL I love going back through my voice command post and seeing Steph misspelled LOL I need a tee not tea...lol..
                Anyways I called Zex and after 15 minutes I got the what sounded like very busy tech room.. the first thing the kids said was anyting under a hundred shot is just going to burn my spark plugs and I'm not going to feel it... Also he did confirm I just need one solenoid with a tee fitting...
                Which definitely brings me to the idea of buying a single nitrous kit with an extra cheater plate.. the price almost doubles for a dual quad setup and you're basically getting an extra cheater plate and some T fittings... And every dual quad setup seems to go from 100 to 300 I don't want to use that much...
                 
              • weedburner

                weedburner Well-Known Member

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                You might want to check out ebay for used nitrous parts. Always been a DIY kind of guy, got a good sized bin full of different plates/solenoids/plumbing/etc that I've picked up over the years to experiment with.

                Grant
                 
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                • weedburner

                  weedburner Well-Known Member

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                  There was a time on yellowbullet when most of the nitrous gurus were there and shared more information than they probably should have. Not sure if the search function can still get you to the good stuff, but Steve Johnson (owner of Induction Solutions) sponsors the nitrous section and is still there answering questions along with a few other smart nitrous racers.

                  Grant
                   
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                  • pittsburghracer

                    pittsburghracer Well-Known Member

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                    I was going to recommend this. Steve Johnson has a whole nitrous section on Yellowbullet if you drop down on the homepage.

                    Nitrous - Induction Solutions
                     
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                    • Hot Metal

                      Hot Metal '69 440 Cuda

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                      There's also a very good thread on Moparts thats somewhat old now, it mixes in N20 and turbo/blower threads. The sadly missed Nitrous guru Monte Smith answers questions, have a read?. Its 18 pages long and you'll have to sift through to find the N20 threads though.
                      Moparts - Monte Smith Official Power Adder Thread
                       
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                      • Bobzilla

                        Bobzilla Well-Known Member

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                        Keep it simple to start with.
                        Two plates and two sets of jets, one for each carb. One fuel solenoid and one nitrous solenoid. Yes, you can tee the output of one solenoid out to two carb plates, just like one solenoid can feed several fogger nozzles.
                        Your twin plate setup will double your expected jetting level output. That is to say if you want to add 100 horsepower, you need each plate jetted for 50 horsepower, so the total amount flowing adds up to your expected number. The nitrous and fuel solenoids are rated for what they add on a single plate. If you were to try 250 horsepower jetting on both carbs, theoretically speaking, your single kit solenoids won't supply enough, and that is when more solenoids are needed.
                        After that, make all timing and fuel supply adjustments based on total power added.
                        I have run 250 horsepower jets in a single plate Cheater system for a lot of passes on mild 383. It's pretty safe if you don't get greedy with timing.
                         
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                        • Hot Metal

                          Hot Metal '69 440 Cuda

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                          I have run 250 horsepower jets in a single plate Cheater system for a lot of passes on mild 383. It's pretty safe if you don't get greedy with timing.

                          Yep, timing is what kills motors not lean. Also the Cheater N20 solenoid has a .093 orifice so you won't get 250hp from the biggest jets, maybe around 200 tops....I only managed to get a 160hp increase from 110/110 jets according to my mph but that was a rich set up in those days, much cleaner today on the fuel side, and thats when you gotta watch the timing even more.
                           
                          Last edited: Jan 28, 2020
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                          • weedburner

                            weedburner Well-Known Member

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                            I've got a folder of nitrous related snips from YB, i'll start off with these...

                            nosplateid.jpg

                            Here's also an attached pdf on nitrous system solenoid rebuilding from Nitro Dave...

                            Grant
                             

                            Attached Files:

                            Last edited: Jan 28, 2020
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                            • Bobzilla

                              Bobzilla Well-Known Member

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                              Same here. Did not add 250 horsepower to my combo, just ran their "250 horsepower" jets. Mine was pretty mild and I never leaned on it hard. Pulled extra timing, ran 110 octane fuel with those jets, and never hurt any parts at all.
                              Mine was a heavy car and a heavy driver. Probably 4100 pounds or so race weight. Ran 13.60s on motor and best of 11.85 on nitrous.
                               
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                              • j par

                                j par Well-hung Member

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                                Well I feel I have a lot of things to try right now before I get to the nitrous but the big swap meet is going to be in a little over 60 days so I'd like to have my knowledge together so I can start finding the parts...
                                I guess if I could pick up a nitrous bottle at a reasonable price that would start me off pretty happy.. honestly I really like the looks of the Speedmaster cheater plate? It seems to inject a nitrous from around the edges? Their reviews are total crap and of course I'd be a needle in a haystack for somebody who actually used one. Again I like the design in the fact that it doesn't have the bar going through the center for when you're not using it... And of course the price! LOL...
                                To $53 cheater plates about $200 for solenoids and a Purge kit and a little under 200 for a bottle.... And of course I have to buy Jets and throttle triggers and wiring and all that stuff and that's going to add up as well. Then you look at the entire kit for just about $800 and you end up not saving a whole lot if any at all...and even at that I would want some smaller jets for starting out as well I matter what the guy on the techline said...
                                 
                              • SSG_Karg

                                SSG_Karg Stuck in the middle

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                                upload_2020-1-28_17-37-10.gif
                                 
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                                • j par

                                  j par Well-hung Member

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                                  you know I have a thread called dual quad nitrous where I talked about this for some time now and I was really looking to get some serious answers and I sure appreciate the people who've been able to chime in with it and give some serious good feedback... I'd be glad to slap stick and shoot the "If's" with you guys over on that thread no problem..
                                   
                                • SSG_Karg

                                  SSG_Karg Stuck in the middle

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                                  I posted the goofy gif because that’s really all I can offer on the topic right now. I’ve never used nitrous. Trust me, I would love nothing more than to spray my little 318 into outer space but my current budget will not allow it. So for now I must live vicariously through you, JPar. I want nothing more than for you to spray that motor into the stratosphere because that’s what I would do. Godspeed my friend.
                                   
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                                  • 318willrun

                                    318willrun Roadkill '80 D150

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                                    Another one of those "I can be smarty pants on anyone else's thread but don't do it to my thread" remarks. :rolleyes: I meant it and you showed it, bottles are for babies, now keep crying :poke:
                                    :rofl::rofl::rofl:
                                     
                                    Last edited: Jan 28, 2020
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                                    • SSG_Karg

                                      SSG_Karg Stuck in the middle

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                                      Not sure what you mean....I probably have some of the thickest skin on this site. My shit is slow as hell and I’ll be the first to admit it.
                                       
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                                      • SLOPAR72

                                        SLOPAR72 Well-Known Member

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                                        The opinions will vary. If you are running 2 carbs fog it. Cleaner, softer hit, more options.

                                        As Said Steve Johnson is the man. It's like crack and every hit puts you one step closer to a rebuild lol....

                                        JW
                                         
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