Building A Supercharged Pontiac 400 Big-Block Engine – Crazy!

Discussion in 'Superchargers, Turbos, Nitrous' started by Maniacmechanic1, Nov 18, 2018.

  1. Maniacmechanic1

    Maniacmechanic1 solid fixture here in the forum

  2. Maniacmechanic1

    Maniacmechanic1 solid fixture here in the forum

  3. Grumpy

    Grumpy The Grumpy Grease Monkey mechanical engineer. Staff Member

    you don,t build a 13.5:1 compression, super charged engine designed for alcohol , and dump a 80% nitro fuel mix in it,
    thats just having no idea about the different pressure curves and burn characteristics, if it was an 8:1 compression engine,
    with a super charger and he dumped that nitro fuel it may have allowed the engine to survive a few runs making killer power

    https://www.topspeedparts.com/blogs/news/fuel-comparision

    http://www.smokemup.com/tech/fuels.php

    https://www.enginebuildermag.com/2018/01/fuel-mixtures-drag-racing-engines/
     
  4. Maniacmechanic1

    Maniacmechanic1 solid fixture here in the forum

    He learned the hard way.
    5:1 to 6:1 static is typical for supercharged nitro.
     
  5. Maniacmechanic1

    Maniacmechanic1 solid fixture here in the forum

    I am sure he found out the MSD Buzz Box was worthless for Nitro use too Grumpy.
    A single ignition misfire on Nitro & the engine goes Kaboom.
    You can only trust a Magneto for Nitro lightoff needs.
     

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