Need a prop for 1966 merc 950

[Mortamie]

I have a old 1977 fiberglass boat with a merc 950 on it my prop is badly dmged but still scoots me acrossed the water. I have no clue what the rpm or top speed is or the size of prop that is on it now for I have no clue on how to find this out... Oh and I bought an AL prop from a second hand store hoping it would fit my boat but it didn't. This prop has no dmg at all but I have no clue how to find out what it is for if anyone would like to pick it up off me for pretty cheap pm me Thanks any help on size and where to find the one I need would be appreciated I will be using boat for fishing and rec.

 

[jestor68]

Re: Need a prop for 1966 merc 950

If you remove the prop nut and washer, you should see a size stamped on the hub; for example 13-1/4 X 17. That is the diameter and pitch.

Props for your motor are available in the prop section. All the Mercury in line 6 cylinder motors 90 thru 150 hp use the same props.

Depending on the size of your boat, I'm guessing that a 17 pitch would be a good place to start.

What is the elevation where you boat? That would effect the prop size.

 

[Mortamie]

Re: Need a prop for 1966 merc 950

i live in southern Idaho

 

[jestor68]

Re: Need a prop for 1966 merc 950

The elevation in Twin Falls is 3745 ft, which translates to a loss of about 11 hp. So your 95 is actually a 84 hp motor, provided it's healthy to begin with.

If the boat has a working tachometer, that would be a big help. You want to prop the motor to operate within it's full throttle operating range; which in this case is 4800-5300 rpm.

A "1977 fiberglass boat" is not much of a description. A picture is worth a thousand words.

Is it a 15 ft or a 18 ft?

 

[Mortamie]

Re: Need a prop for 1966 merc 950

boat is in the shop once I have it out I will take a pic of it and put on here

 

[Mortamie]

Re: Need a prop for 1966 merc 950

oh and it is a 16ft fiber glass trihull if that helps

 

[Mortamie]

Re: Need a prop for 1966 merc 950

The title says it is a Fiberform 16 ft open boat but the shop I just got screwed at says it is an 18 ft Fiberform I don't know if that makes a difference or not.

 

[Texasmark]

Re: Need a prop for 1966 merc 950

A prop shop could tell you what you have and sell you a replacement, or pay for the analysis and get on here and buy your prop.

Mark