Water rushing over transom into splashwell

[StarcraftTR150]

Hi there,

I have a 1971 Starcraft TR150. It is a 15ft trihull boat with a 60hp Johnson hydroelectric drive outboard. When at high speeds, water rushes into the splash well at the rear of the boat. The water seems to be coming from the small gap between the top of the transom and the outboard. Could this be due to improper motor tilt or prop size? I have attached a video for reference. Any recommendations or ideas are appreciated. Thanks!View attachment trim.BB2929E0-1F36-4163-8A82-91303BDA2B47.MOV

 

[WesNewell]

Probably because the engine was mounted way too low on the transom. With engine in running position on trailer, I think you'll find the av plate below the bottom of the hull.

 

[roscoe]

Water splashing over transom

Hi there, I have a 1971 Starcraft TR150. It is a 15ft trihull boat with a 60hp Johnson hydroelectric drive outboard. When at high speeds, water rushes into the splash well at the rear of the boat. The water seems to be coming from the small gap between the top of the transom and the outboard...

forums.iboats.com

 

[racerone]

Nothing to do with the prop.-----How high is the transom 15" or 20" ?----What is the model # of the motor.----Any pictures ?