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Old 11-25-2019, 09:21 AM   #7
BUBBAS IGNITION
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Join Date: May 2010
Location: SPEEDWAY INDIANA
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Default Re: Flathead "spark knock" ???????

Quote:
Originally Posted by Brian View Post
Bubba, Have you had a chance to get back to this?
Just today will work some on a crab or two tomorrow.
I do think we are missing something in the discussion and thats fuel.
A lean air fuel will cause spark knock as well , often times just adding some fuel will fix the issue , try making the air/fuel ration a little richer ........
We change the heads , pistons , stroke and valve timing all at the same time time and then wonder why we have spark knock........
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