1972 CC Repower

[CHANCE1234]

90-115 hp. 2 stroke and keep the engine as close to 300 lbs max as possible.

[Bushwacker]

Amen to what Chance said. Reason is these hulls are extremely efficient, don't need a lot of power, and will plane at about 12 mph with a 300 lb motor! Moesly designed the 19/20' hull in the mid-60's for the lightweight motors available at the time, which didn't exceed more than about 110 hp and 300 lbs. If you hang a 500 lb 4-stroke on it, you will screw up the balance of the boat, raise it's min planing speed to the low 20's, and end up with a worse ride and handling than if you stay with the original configuration. Adding a bracket will make the situation even worse and require many other changes to get an acceptable ride and low speed planing performance.

[boatervalpo]

Would a 125hp at 400lbs cause much issue / change of ride?

Originally Posted by Bushwacker

Amen to what Chance said. Reason is these hulls are extremely efficient, don't need a lot of power, and will plane at about 12 mph with a 300 lb motor! Moesly designed the 19/20' hull in the mid-60's for the lightweight motors available at the time, which didn't exceed more than about 110 hp and 300 lbs. If you hang a 500 lb 4-stroke on it, you will screw up the balance of the boat, raise it's min planing speed to the low 20's, and end up with a worse ride and handling than if you stay with the original configuration. Adding a bracket will make the situation even worse and require many other changes to get an acceptable ride and low speed planing performance.

[Bushwacker]

Lighter is definitely better, and 400 lbs seems to be about the upper limit; a lot of guys are running the older V-6 Mercs that weigh about that. If I was making a 10 hr run to the Abaco's, I'd prefer the old 300 lb V-4 I used to have! The carb'd 60 degree 150/175 V-6 OMC's weigh about 375 and provide plenty of power. The 115/130 V-4 E-TEC's also weigh about 375. You can offset some of the weight effect by moving batteries and the console forward and by running a 4B stern lifting prop and a Doelfin or equivalent on the motor, but that will reduce WOT speed.