sixabove
11-02-2001, 09:47 AM
We are building a 90 Hp yamaha to use for 1/4 mile drag and to do a little circle racing. Just wondering if any one has ever had one of these motors professionaly built. To make things interesting the motor is going on a 13' allison with full 20" set up. But my question is how many RPM's and how much HP will the stock crank and bearings handle? And who can build one? oh did i mention nitrous oxide?