Help with carb jetting and e10 gas

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#1 (permalink)

03-14-2009, 09:10 PM

garry viohl garry viohl is offline

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Join Date: Dec 2006

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Posts: 96

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Help with carb jetting and e10 gas

California gas 91 octane e10
428 fe
10 to 1 comp
800 holley double pumper
Autolite 3923 plugs
Cant get the plugs to the light brown color
They are either clean or black depending on jets
Started with 72 primary and 85 secondary
Now 75 primary and 87 seconardy
I go one size up too black
I go one size down to clean
Getting close on color, but cant get it right.
Is it me, or just the gas?

Has anyone had luck jetting their carb with CA 91 octane e10 gas? I dont want to switch to no alcohol gas.

Any suggestions?

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