Madd Motorsports 1975 S30 Datsun 280z. Infusion Build

Discussion in 'Build Ups & Projects' started by B.mad, Jun 15, 2016.

  1. Frank.JD.Perez

    Frank.JD.Perez Legend

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    put in a racing rotary engine. thatll get ya up there
     
  2. D3VST8R96GT

    D3VST8R96GT Well-Known Member

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    Vk56

    Sent from my LGLS991 using Tapatalk
     
  3. B.mad

    B.mad Well-Known Member Preferred Vendor

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    Hmmm. i gotta look into that. Now, i am unsure if you answered this, but is it possible to make a SD for another manufacture work?
     
  4. B.mad

    B.mad Well-Known Member Preferred Vendor

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    soon ;)
     
  5. B.mad

    B.mad Well-Known Member Preferred Vendor

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    So far it has the L28 EFI. Don't know yet what the plans are to be exactly.
     
  6. B.mad

    B.mad Well-Known Member Preferred Vendor

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    Hahah that was an option. a 20B 3 rotor.
     
  7. B.mad

    B.mad Well-Known Member Preferred Vendor

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    That is very much an option as well.

    Right now, its either a built L28, 20b rotary, Vk56, LS1, VQ37VHR, RB25 or 26.
     
  8. B.mad

    B.mad Well-Known Member Preferred Vendor

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    [​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG]
     
  9. g36 monkey

    g36 monkey Moderator Staff SN95 Supporter

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    Yay spaghetti!
     
  10. ttocs

    ttocs Legend

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    as a former stereo installer I have seen more then my share of wire mess monsters but yours looks like it found a mate, and went to town. I mean that is the brady bunch version of a wire monster.... color me impressed.
     
  11. mcglsr2

    mcglsr2 Well-Known Member SN95 Supporter

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    A SD or Speed Density setup does not use any kind of air meter, thus it's not a "manufacture-specific" thing. Rather, SD works off measuring the following: air intake temperature and manifold pressure. Using those, in addition to some other existing inputs and your engine's VE, the amount of fuel needed is calculated based on RPM and load and bob's your uncle. In fact, you can completely ditch the MAF. Speed Density will work on any car that has an IAT, MAP, and some other stuff like RPM/TPS, etc. In fact, you can buy a GM IAT and GM MAP, and pretty much use those on any car, and just wire it into the MS.

    The only trouble one might have with SD is that, at idle, it is quite sensitive to manifold vacuum (since it needs the MAP signal to dictate fuel load). If there isn't much a vacuum signal at idle, the car might be harder to tune at that RPM - meaning you might get a hunting idle. So cars with big cams that don't have much vacuum at idle are harder to tune with SD - but there are ways around this if necessary.

    If you have a car with a different engine, no idea what MAF/Air Meter to use, has been boosted, modified, larger injectors, etc. then SD is a great way to go.


    And I love those pics by the way. That's so exciting to see a car like that in that state and get the opportunity to work on it and "bring it back." On top of that, it's such a cool car. :D
     
  12. B.mad

    B.mad Well-Known Member Preferred Vendor

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    I am going to have to consult you when the time comes haha.

    Its going to be a fun project indeed.
     
  13. mcglsr2

    mcglsr2 Well-Known Member SN95 Supporter

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    I don't profess to be an expert, but I will help however I can! :D
     
  14. B.mad

    B.mad Well-Known Member Preferred Vendor

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    So, we are in the market for frame rails and turns out an acquaintance has some MSA floor pans with the frame rails welded in. Which means, we are going to put them up! I got a welder, so i am practicing and can hopefully get the car in my garage soon and take it apart and start the build.
     
  15. g36 monkey

    g36 monkey Moderator Staff SN95 Supporter

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    YES!
     
  16. B.mad

    B.mad Well-Known Member Preferred Vendor

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    Adding parts to the stock pile. Here you see MSA floor pans with frame rails tacked on. Needs some love from the sander and sparks from the welder.

    [​IMG]
     
  17. B.mad

    B.mad Well-Known Member Preferred Vendor

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    She bought a MOMO hub adapter and decided to mate it with the Sparco quick release and Nardi wheel for some pictures.


    [​IMG][​IMG][​IMG][​IMG][​IMG][​IMG]
     
  18. g36 monkey

    g36 monkey Moderator Staff SN95 Supporter

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    How's it feel?
     
  19. B.mad

    B.mad Well-Known Member Preferred Vendor

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    Haven't installed it to the car yet. IMO, the steering wheel is a little big in diameter and small on the grips. She bought this steering wheel about a year ago. That was before she wanted to track the car. Now she might end up with a smaller diameter wheel, with leather, alcantara, or suede grips.
     
  20. ttocs

    ttocs Legend

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    I keep scrap metal just so I can practice a little and mess some stuff up before I get the settings and figure out how fast to move and move on to the good stuff.