jukitokek Posted November 22, 2022 Report Share Posted November 22, 2022 please help..if dynamic compresion ratio is :4.2:1 what octane gasoline do I use ?4.8:1 what octane gasoline do I use ?5.4:1 what octane gasoline do I use ?6.0:1 what octane gasoline do I use ?6.6:1 what octane gasoline do I use ?7.2:1 what octane gasoline do I use ? Quote Link to comment Share on other sites More sharing options...
Strutty Posted November 22, 2022 Report Share Posted November 22, 2022 Use 97/99 premium because of the lower ethanol rate. on all of those you will probably be fine at 95 octane. I had my gasser up to 11:1 without running any octane adjuster on 99 esso If youre after exact numbers i can do some calculations tonight Quote Link to comment Share on other sites More sharing options...
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