WILDMAN
Well-known member
I just got the motor on this boat yesterday. Splashed it today. Runs smooth as silk. No porpoise, no hop in a hard turn, No chinewalk at 70 mph, and a very smooth ride.
I took the motor off a new 21ft Liberator tunnel that I rigged last week. It ran 102 mph. The motor still has a Sportmaster gearcase which is 4-5 mph slower on a V-bottom. I'll change it in a week or two. I also had way too big a prop. With a 27 Tempest and a 1.62 gear ratio, I could only turn 5300 rpm at 72 mph on GPS. I'm hoping for 75-78 when it's set up right. I'd like to see 80, but it's doubtful. Here's some pics from today.
I took the motor off a new 21ft Liberator tunnel that I rigged last week. It ran 102 mph. The motor still has a Sportmaster gearcase which is 4-5 mph slower on a V-bottom. I'll change it in a week or two. I also had way too big a prop. With a 27 Tempest and a 1.62 gear ratio, I could only turn 5300 rpm at 72 mph on GPS. I'm hoping for 75-78 when it's set up right. I'd like to see 80, but it's doubtful. Here's some pics from today.