How to determine new prop for old Merc

[jtaplin]

I have a 1966 50 HP 4 cyclinder Mercury that runs like it was brand new, but I need a new prop for it. How do I go about deteremining the appropriate prop for this motor?

 

[ob]

Re: How to determine new prop for old Merc

What prop are you currently running? Are there any markings on the prop?What lenghth and weight is the boat that the 50 is pushing?

 

[jtaplin]

Re: How to determine new prop for old Merc

The prop doesn't have any markings on it that I can see, it is a 2 bladed aluminum prop. The boat is a 15' fiberglass Tri-Hull, probably in the area of 1,000 lbs.