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Old 07-29-2022, 10:17 AM
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rang-a-stang rang-a-stang is offline
Join Date: Oct 31, 2016
Location: Camarillo, CA/Boise, ID
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Oh, one other thought, I felt like some of the edges in the combustion chamber were really jagged and sharp. I wish I would have taken a flap disc or dremel and softened them up a tiny bit. I had 9.55:1 and I pinged a tiny bit on 87 octane and I think is was because of those sharp edges. The reason I passed on doing mine was because I did not have a way to measure the chamber volume and was scared I was going to mess it up. If I was in your shoes, I would borrow or buy a combustion chamber measuring tool and just, very subtly, round off the super sharp edges in the chamber.
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