Prop for 1976 115 hp merc

[Plainsman]

Hello,<br /><br />I'd like to know what size / pitch prop I would need for a 1976 115 hp, model 1150 Mercury, serial # 4313752.<br />TIA,<br /><br />Eric

 

[walleyehed]

Re: Prop for 1976 115 hp merc

That all depends on boat size, load, hull design, etc....<br />To give advice for that, we need an RPM figure at WOT with a known prop.<br />If you're just installing the motor on a boat, tell us what it is and maybe we can get a starting point.

 

[Plainsman]

Re: Prop for 1976 115 hp merc

The boat is a 17 ft 1978 Glastron with a v-hull. Model SSV-176. Load is 2 adults with fishing gear.<br />The reason I asked is Ijust bought the boat, took it out and it ran for about 1/2 hour with blue smoke the whole time. Wouldn't start after that. I took it to the Mercury shop and he said the part of the prop that goes over the shaft was "spun" and it would cost $160 for a new one. As for the smoke and not starting, he wasn;t sure yet, but the plugs looked burned.

 

[walleyehed]

Re: Prop for 1976 115 hp merc

The SSV-176...my first true love...<br />I'd guess you'll be in the 17-19P range.<br />Yea, the prop may list for 160, but you can hub it if it's in decent shape for around 50-70 bucks.<br />What pitch prop is it????<br />The blue smoke is oil...could be too much in the mix, or overly rich..<br />You're 224mi. from North Platte...if you were closer, I'd send ya there....1 of the best shops in NE.

 

[Plainsman]

Re: Prop for 1976 115 hp merc

I don't know the pitch of the prop. How to I find out what it is? <br />Yeah North Platte is a ways a away, but I had to take it to Big Springs near Lake MacConoughy about 120 miles, to find someone to work on it. Cabelas was alittle closer, but $20 an hour more.

 

[walleyehed]

Re: Prop for 1976 115 hp merc

I spend alot of time on McConaghy...<br />Anyway, pull the prop nut off and the numbers should be molded into the rear of the hub housing.

 

[Plainsman]

Re: Prop for 1976 115 hp merc

Thanks, I'll take a look when I get it out of the shop.