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Thread: Oil Ratio

  1. #1
    Vic
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    Oil Ratio

    Hey guys, I am getting ready to do a water test with my new head and I am going to run 104 octane how much oil should I use.


  2. #2
    All hail the Chief! fullboogie's Avatar
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    Man, I wish I could answer that with certainty. I don't see why the ratio (i.e. 40:1 or 32:1) would be any different. But there's lots of guys on here who use race gas who will chime in...

  3. #3
    what's your compression that you have to run 104?

  4. #4
    sleeplessnMS's Avatar
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    what all do ya have done to the motor? On a octane calculator I'm at about 97octane with agressive timin and alot of compression 32-1 synthetuc oil mix fpp carbs an msd bb. If ya over oil and octane it will slow you down. now my same topend with less compression i used pump gas and oem oil injection. Now if I were to do it again I;d splash a half or 1 gallon 110 per 5 gallons BUT thats a full race port bb efi.

  5. #5
    Pistonwash's Avatar
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    Quote Originally Posted by racerx585 View Post
    Hey guys, I am getting ready to do a water test with my new head and I am going to run 104 octane how much oil should I use.

    40 to 1 will be fine with a good synth or good castor oil. Let us know what your compression is too.

  6. #6
    Quote Originally Posted by sleeplessnMS View Post
    what all do ya have done to the motor? On a octane calculator I'm at about 97octane with agressive timin and alot of compression 32-1 synthetuc oil mix fpp carbs an msd bb. If ya over oil and octane it will slow you down. now my same topend with less compression i used pump gas and oem oil injection. Now if I were to do it again I;d splash a half or 1 gallon 110 per 5 gallons BUT thats a full race port bb efi.
    +1 too much octane will make LESS power, especially on a 2 stroke.

  7. #7
    sleeplessnMS's Avatar
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    error..... I run 36:1 not 32 my bad...

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