Gas/oil ratio for 80cc 2 stroke engine?

Discussion in '2-Stroke Engines' started by gomabman, Jul 9, 2008.

  1. gomabman

    gomabman New Member

    I apologize for not being good at math but could someone please explain how to calculate the gas/oil ratio for 1 gallon of gas for an 80cc 2 stroke engine.

  2. Skyliner70cc

    Skyliner70cc Active Member

    128 oz of gas in one gallon.

    50:1 ratio means 50 parts of fuel to 1 part of oil.
    so 128 oz of fuel would have 128/50 parts of oil = 2.56 oz

    40:1 ratio means 40 parts of fuel to 1 part of oil
    128 oz of fuel would have 128/40 oz of oil = 3.1 oz oil

    etc.. etc..
  3. fastboy9

    fastboy9 Member

    I always use this:
    Scroll down and theres a little calculator that will do it for you! There are hundreds of these things on the internet and they are all pretty simple to use.