What prop for 1989 arriva

[Tuefelhunden]

I recently replaced the stern drive, through research (including on here) I went with the sterndrive engineering model SE 106. The boat has been running great but I thought since I replaced the sterndrive at $1500 a $200 prop would be the prudent thing to do. I don't know if my current prop is original to the boat but it has the number 48-78120-19 which I think is a 14 x 19 pitch. I just want to be sure that if I buy a new prop I buy the correct one for my boat, I was told if you run the wrong pitch it can ruin your motor.

My boat is a 1989 arriva 20 footer with a 3.0 merc 4 cylinder. Gear ratio is 1:94

Before I changed the sterndrive it would tach 4.7 WOT but since it is 4.2 with 4 adults on board. Could this be to a break in period? I broke it in as instructed with the new sterndrive.

Any help would be appreciated as to what diameter and pitch to buy. Thanks

 

[Tuefelhunden]

Re: What prop for 1989 arriva

Also if there are any old devil dogs out there I apologize for my misspelling of Teufelhunden. I misspelled it when I registered and can't figure out how to change my user name.