rainman
Member
My previous big bore engine ran good for a few years. Then started to give trouble and wouldn't turn over 12,000 rpms. We replaced everything, checked everything, rebuilt everything, from ignition to piston, rod, coil, whatever, and never found out why it would never turn rpms again like it used to. last time I was checking it broke the piston and messed the crank cases too. That was a big bore engine with normal stroke. When it was running good it would be OK, but nothing compared to the stroker. It was slower and way harder on the clutch. Tended to be very violent when getting into the power band compared to the stroker Sudam I have. At least on dirt ovals I'll take a stroker. Might be a different story on sprint asphalt tracks. In fact in these tracks I would take a good 100cc rotary valve or a reed on gas and on a small carb. More "reliable" if there is something reliable over 18,000 rpms and very fast on top end.