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Northstar Engines and System Technical Discussion Discussion, How to install Nitrous the correct way! I need input in Cadillac Engine Technical Discussion; Don't do a smokey burnout on street tires, its just going to make them spin easier. And make sure you ...
  1. #91
    NHRATA01 is offline Cadillac Owners Fanatic
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    Re: How to install Nitrous the correct way! I need input

    Don't do a smokey burnout on street tires, its just going to make them spin easier. And make sure you drive around the water box. Get some drag radials, and they'll help a ton with the traction. Wouldn't try slicks yet, you may frag the diff and it can get a bit hairy on the big end running a bias-ply/radial tire mix on the car, will be like skating on ice. Get some good drag radials, they'll help a ton with the traction and work well on auto cars.

    Also run a copper plug on the spray, don't run platinum and definitely don't run iridium - they burn hotter so detonation is a bigger problem.

  2. #92
    Highline Cady's Avatar
    Highline Cady is offline Cadillac Owners Fanatic
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    Re: How to install Nitrous the correct way! I need input

    Thanks again NHRATA, you've been a big help, she's finally dialed in good, now getting traction in a FWD is the next project. It never ends. And maybe my own refill station, seems like it'll be way cheaper.

  3. #93
    AJxtcman's Avatar
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    Re: How to install Nitrous the correct way! I need input

    Jets we have
    0.019
    0.023
    0.027
    0.031
    0.033
    0.035
    0.039
    0.041
    0.052
    0.057
    0.062
    0.093


  4. #94
    Highline Cady's Avatar
    Highline Cady is offline Cadillac Owners Fanatic
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    Re: How to install Nitrous the correct way! I need input

    Just an update gentlemen. Running the 150 shot jets on the street, having way to much fun until the bottle runs empty.

    We've run at least 20 bottles through it, got it down to the track once, and I've been driving allot lately. And have had no real problems since getting her dialed in on these jets. The filter got plugged up once, but since then, well... lets just say I've been having lots of fun. It truly is the most fun you can have with a bottle. I have had NO ill effects, still a wonderful daily driver!!!

    We are currently working on slicks and possibly a LSD before we get to the track again, but we'll get down there again. We'll run big jets and we will bust into the 12's this summer, period. It has become the mission of my summer. I'll keep you all updated.

  5. #95
    AJxtcman's Avatar
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    Re: How to install Nitrous the correct way! I need input

    Did a little more fine tuning on this.
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    Well It didn't make it any faster, but it looks good






  6. #96
    AJxtcman's Avatar
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    Re: How to install Nitrous the correct way! I need input

    The last time at the track we ran 20 lbs of Nitrous through the engine at this setting!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!



    The car is still driven almost daily.

    The DHS Nitrous has been sidelined for the Mustang project

  7. #97
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    Submariner409 is offline If it won't run, stick on fender vents
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    Re: How to install Nitrous the correct way! I need input

    AJ, Better to tell our new members just what you're running at the track - a blanket set of specs, I want nitrous, and the "daily driver" wars will start again.........!!!!

    ...........and post the timeslip.

  8. #98
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    Re: How to install Nitrous the correct way! I need input

    Quote Originally Posted by submariner409 View Post
    AJ, Better to tell our new members just what you're running at the track - a blanket set of specs, I want nitrous, and the "daily driver" wars will start again.........!!!!

    ...........and post the timeslip.
    Highline has his time slips.
    it has been a year now, but I think they were in the 13.6 or 13.8 area

  9. #99
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    Re: How to install Nitrous the correct way! I need input

    This Data came from the Zeitronix Module not the PCM

    This was the base run without N2O








    COT?



  10. #100
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    Re: How to install Nitrous the correct way! I need input

    This Data came from the Zeitronix Module not the PCM
    This run has N2O.
    look for User 1 Input voltage going fron 0v to 5v when the N2O is on





    Blip rich when the extra injector kicks in



    COT again?



  11. #101
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    Re: How to install Nitrous the correct way! I need input

    And they were on the same road going the same direction and the same starting spot about 5 minutes apart from each other allowing for some cooling time.

  12. #102
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    Re: How to install Nitrous the correct way! I need input

    Quote Originally Posted by AJxtcman View Post
    This must be stock.

    RPM----Spark---Air Fuel Ratio (:1)
    666 ----- 10 ----- 14.7
    1924 ---- 19 ----- 12.8
    3276 ---- 18 ----- 12.8
    3357 ---- 18 ----- 12.8
    4120 ---- 18 ----- 12.8
    5246 ---- 21 ----- 12.8
    6358 ---- -4 ----- 12.7
    4615 ----- 6 ----- 12.8
    4948 ----- 8 ----- 12.8
    5304 ---- 13 ----- 12.8
    5680 ---- 17 ----- 12.8
    6038 ---- 18 ----- 12.8
    6316 ---- 19 ----- 10.5
    5455 ----- 7 ----- 10.5
    4683 ----- 8 ----- 10.5
    4800 ----- 9 ----- 10.5
    4923 ---- 11 ----- 10.5
    5053 ---- 11 ----- 10.5
    5161 ---- 11 ----- 10.5
    5275 ---- 11 ----- 10.5
    5079 ---- 25 ----- 14.7
    3299 ---- 22 ----- 14.7
    3057 ---- 21 ----- 14.7
    2936 ---- 21 ----- 14.7

    As you can see the PCM changes the Target AFR for some type of protection. I would have to guess Cat Over temp (COT), but it could be piston protection also

  13. #103
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    Re: How to install Nitrous the correct way! I need input

    Quote Originally Posted by stbtt View Post
    If you plan on going up any higher than 125 shot I would put a high volume fuel pump in. I have a dual 75 shots on mine, had good fuel till 5500-6000 then it would lean out. I quit using it till I take care of the fuel prob. I like the gas I have had it on almost all my vehicles even the forced inducted ones. I have the same setup that's on the cadi. that I had on my stock suburban. I had a dual setup on it that was running about 175 HP shot on both systems. It sure was fun seeing the faces on people in T/A, Vetts. that just got beat by a suburban.
    Quote Originally Posted by NHRATA01 View Post
    Keep an eye out, you may have a problem if it kicks off for being too lean. Wet systems tend to have a lean spike at activation (especially if it's a returnless system) because the intial opening of the fuel noid drains out the fuel rails and it takes a second for the fuel pump to restore the pressure. Shouldn't be as bad on a return style system, but on a returnless with the regulator back at the fuel pump it's a fact of life. You may have to adjust the sensitivity of your a/f alarm. Best bet is to throw it on a dyno with a wideband and see if you get a spike.
    Thanks for all the input you two gave us.
    We had a lot of fun with the car

  14. #104
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    Re: How to install Nitrous the correct way! I need input

    Quote Originally Posted by AJxtcman View Post
    The last time at the track we ran 20 lbs of Nitrous through the engine at this setting!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!



    The car is still driven almost daily.

    The DHS Nitrous has been sidelined for the Mustang project
    Last time at the track when we blasted it down the track with the big jets the car started to leak oil. The oil leak came out of the RR corner of the case halves near the trans. This engine had pistons put in it and the engine was sealed with GM's TriBond epoxy sealer aka new grey sealer. So we cracked the sealer. The oil leak is very minor and isn't even dripping. It just gets a little damp on that corner. I have cleaned the oil off and rechecked it 2 weeks later and didn't see any signs of oil, but after 3000 miles we saw some minor residue.

    Beware of springing a leak

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