Hi Captains, i just bought a new...

[Huddy]

Hi Captains,  i just bought a new to me 2004 320 SD. when i pulled it out for storage i noticed it has different prop sizes 18x18 starboard 18x19 port.  does anyone know what the factory prop size should be or point me in the right direction for a sea ray prop chart. i want to make sure they both get tuned to factory size.

[wingless]

It is probably a 320DA, not a 320SD.

Here is the propeller matrix.


https://bbg1.my.salesforce.com/sfc/p/#E0000000Z21E/a/E00000000UPj/m4fqM2lXyM88kvCMPtEOuZax.DLsgALVeZLWJLP8N.0

[Huddy]

thanks wingless, for the propeller matrix. you are correct it's a 320DA . didn't think it looked right when i wrote it lol.. i'm hoping the prop shop can tweak the 18x18 to 18x19 . the RPM's were off slightly at WOT this should bring them closer. I'm guessing the last owner needed the prop in a hurry and couldn't wait for the the correct match or something along that line. thanks again for the help.

[PETERW]

Reverse rotation is done in the ZF V drive . Gear ration is slightly different from forward to reverse. SeaRay compensates using slightly different prop.