[quote="BoomerMuskoka"] ya and you should of added finger ports to yours while the sleeves were out..
now that would be fun..
I did add them! The 90 Yamaha is a mod motor.. It makes 119.6 hp at 6500 rpm and over 100 hp at 7500 rpm I did the research and had Jon at Hydro Tec build the motor years ago. Unlike the 130 hp mod 90s Steve Cooler raced in Formula V that blew multiple gaskets, did not last and overall ran poorly, this build is perfect. Much better than the simple 110 hp mods and it runs on Shell 92 fuel. Jon asked if they could copy my specs for other customers. There are a few motors similar out there. Contact them if you want one.
The only 15 foot viper I have been in was a new one powered by a 115 Mercury. it ran low 60s. I think the Yamaha with the small foot 1;71 gears will run in the 65 mph range on a viper.
Steve Coolers Rapid Craft ran low to mid 80s.
https://www.youtube.com/watch?v=SfsK2tPzVKc When the T850 racers were running all the mod 56 motors, I toyed with the idea of running the Yamaha dressed as an SST 60 on the Oasis. Jim talked me out of doing it. He was right, all the mod guys will do is get wet.