In John Tiger's original post he said "will easily run 80 when dialed in"
That got me thinking about his SS2000/115 article. The SS is a lot bigger hull, and probably a lot heavier. I would expect a race 15' boat to be a lot lighter, which would help acceleration.
So you figure the 15R would be faster on top end if you could find a prop to do it? That would make sense to me. The boats are so much smaller than an SS. What HP do you think those engines make?
What would the propshaft HP of a stock 150 inline 6 be?
Thanks
The orange boat has already gone 83.7 the way it was bolted together in the shop and with the first prop I grabbed. While John's motor is stronger, he limited himself by not having low water pick ups and we left the V4 prop shaft in his so he could run those old OMC race props to keep it "retro". My gearcase was done by JC hust like an XR6, its higher, and I have a V6 shaft so I can run anything I want on it.
Unfortunately, I did have a customer who has a twin to my orange boat and he was going to restore it with a 1500XS on it, but he backed out, we really wanted to have the three of them together.
As far as the in line comparison goes, while an XS "MAY" have made 155hp, which I highly doubt, I do know that the 140hp V4 never made 140, but would run stock for stock next to the "155" hp engines. Tiger ran a 1985 115 in JP and beat up on XS's all the time.
The real difference was when you could mod them. an in line was really limited, you could port it but you couldn't squeeze it. So in the waning days of the 100cu in classes when all the big dogs would show up at Kankakee and run formula100 and mod100 it was generally won by an OMC and actually, there was a couple Forces that ran well, Remley and Foreman duked it out more than once and the twisters were in the back.
