Percentage of Nitro

Randy,

When I used PO I used it to help as an igniter only, I used 86 percent Nitro, cut with Alkie and 2 percent PO. Boris used 92 or so percent Nitro and was cut with all PO. My Harley wouldn't handle that much PO because of the lower compression ratio and the lower RPM range. Compression Ratio was 10.6 to one and the motor never turned more than around 5800 RPM.

Try the low percentage of PO and see if the motor is a little crisper and sharper sounding, if it is it should perform better.