Seaswirl 175 Gear Ratios and Prop

[scottydog78]

Hi,

I've recently purchased a used Seaswirl 175 which was in need of substantial repair. We've had the engine changed (Volvo Penta 3L I/O) though the boat won't get enough speed to plane. The engine seems fine so we're assuming it is either the gearbox or (less likely) the propellor pitch. Does anyone know what gearbox ratio this boat should have? And also the standard propellor size too?

Many thanks!

 

[TilliamWe]

Re: Seaswirl 175 Gear Ratios and Prop

SOmewherein the 2.0 to 1 ratio range. And no such thing as a "standard" propeller pitch. But with a 2.0 drive it would be somewhere in the 19-23" pitch range.

 

[QC]

Re: Seaswirl 175 Gear Ratios and Prop

scottydog,

Let's let your thread in the Volvo section play out. Gets confusing having two threads at once.

Thanks.

I'm going to close this, and then might Merge to here depending on how this goes.