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  1. Matching Octane to UCCR?

    Intake and Fuel
    Hey guys. I'm almost ready to start my R for the first time in 5 years. Just finished having it bored and installing all new seals and bearings. 66.75 piston, 72mm stroke. I'm now just trying to figure out what I need for octane. I performed a UCCR on it and it came out to 16.25 / 1 with the...